tag:blogger.com,1999:blog-2086386902118642402024-03-14T01:56:14.340+08:00Hsin-Hua Huang阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-208638690211864240.post-60483766800382247532016-09-27T10:06:00.009+08:002021-11-10T10:37:56.948+08:00Hsin-Hua Huang (黃信樺)<div dir="ltr" style="text-align: left;" trbidi="on">
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</div>Assistant Research Fellow<br />
Institute of Earth Sciences, Academia Sinica<br />
[<a href="https://www.dropbox.com/s/24hissikvexzygm/CV_11272018.pdf?dl=0" target="_blank"><b>CV</b></a>] [<a href="https://scholar.google.com/citations?user=KMBtwJQAAAAJ&hl=en" target="_blank"><b>Google Scholar</b></a>] [<a href="https://www.researchgate.net/profile/Hsin-Hua_Huang" target="_blank"><b>ResearchGate</b></a>] [<a href="https://publons.com/researcher/1750126/hsin-hua-huang/" target="_blank"><b>Publons</b></a>] </div><div dir="ltr" style="text-align: left;" trbidi="on"><br /></div><div dir="ltr" style="text-align: left;" trbidi="on"><span style="font-size: medium;"><span style="color: #990000;"># This webpage may no longer be maintained. Please see my updated lab website</span> <a href="https://sites.google.com/view/hsinhuahuang/home" style="font-weight: bold;" target="_blank">HERE</a>!<br /></span>
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<b><span style="font-size: large;">Contact info</span></b><br />
Address: 128, Sec. 2, Academia Road, Nangang, Taipei 11529, Taiwan<br />
Office: R504<br />
Phone: +886-2-27839910 ext: 1504<br />
FAX: +886-2-27839871<br />
E-mail: hhhuang@earth.sinica.edu.tw<br />
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<b><span style="font-size: large;">Research interests</span></b><br />
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My research interests lie in using primarily seismological methos to explore, image, and monitor the physical properties and 3-D geometry of multi-scale Earth structures, including seismogenic faults, magma reservoirs, orogenic architecture, subducting slabs, and inner core hemisphere from shallow to deep. Through that, we develop better understanding of the phenomena observed and the mechanisms behind for various tectonic problems. In the meantime, I am also devoted to studying and mitigating natural hazards such as directional strong shaking of earthquakes and slip behaviors of deep-seated landslides. My works can be summarized in some aspects as below. To whom might be interested, please click on the individual links below for more details:<br />
<b>Worked aspects:</b>
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> <a href="http://h3uang.blogspot.com/2013/11/seismic-tomography-and-multi-dataset.html" style="font-family: inherit; line-height: 20px; text-align: left;" target="_blank">Seismic tomography and multi-dataset joint inversion</a><br />
> <a href="http://h3uang.blogspot.com/2015/11/earthquake-early-warning-and-hazard.html" style="font-family: inherit; line-height: 20px; text-align: left;" target="_blank">Earthquake hazard mitigation</a> <br />
> <a href="http://h3uang.blogspot.com/2013/11/i-am-also-interested-in-exploring-and.html" style="font-family: inherit; line-height: 20px; text-align: left;" target="_blank">Seismotectonics and regional tectonic reconstruction</a><br />
> <a href="http://h3uang.blogspot.com/2013/11/unusual-earthquake-sequence-analysis.html" style="font-family: inherit; line-height: 20px; text-align: left;" target="_blank">Unusual earthquake sequence and its tectonic implications</a><br />
> <a href="http://h3uang.blogspot.com/2012/11/full-waveform-inversion-and-modeling.html" target="_blank">Full waveform inversion and modeling</a><br />
> <a href="http://h3uang.blogspot.com/2016/07/body-wave-seismic-interferometry.html" target="_blank">Body-wave seismic interferometry</a><br />
> <a href="https://h3uang.blogspot.com/2015/07/source-properties-and-rupture-behavior.html" target="_blank">Source properties and rupture behavior</a><br />
> Time-lapse environmental monitoring<br />
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<b style="text-align: left;"><span style="font-size: large;">Prospective partners</span></b><br />
<span face=""><span style="background-color: transparent;"> </span><span style="background-color: transparent;"> I am always</span><span style="background-color: white;"> looking for </span><span style="background-color: white;"><span style="color: blue;"><b>students and postdocs </b></span></span></span><span face="" style="background-color: white;">enthusiastic about exploring Earth structure and various seismotectonic topics (as listed above but not limited to)! Institute of Earth Science, Academia Sinica has strong </span><span face=""><span>multidisciplinary </span></span><span face="" style="background-color: white;"><a href="http://www.earth.sinica.edu.tw/peo_researchFellows_e.php" target="_blank">faculty</a>, various professional <a href="http://www.earth.sinica.edu.tw/res_facility_e.php" target="_blank">facilities</a>, and a highly international environment. You will be able to play with abundant data sets (some of them are fairly unique) from our maintaining networks including seismic, GPS, strainmeter, and infrasound arrays. Nankang is also a good place for people who would like to live with a balance between city and mountains, where you can keep a bit distance from busy tempo of city but are still convenient enough to access the modern beauty of Taipei. If you are interested in joining us, please find more information on our </span><a href="http://www.earth.sinica.edu.tw/index_e.php" style="background-color: white; color: #0b5394; font-family: arial, tahoma, helvetica, freesans, sans-serif; font-size: 14.3px; text-decoration: none;" target="_blank">website</a> <span face=""><span style="background-color: white;">and the</span></span> <a href="http://www.rcec.sinica.edu.tw/tigp-ess/index.html" style="background-color: white; color: #0b5394; font-family: arial, tahoma, helvetica, freesans, sans-serif; font-size: 14.3px; text-decoration: none;" target="_blank">international graduate program (TIGP)</a>. After reading those information, f<span face="" style="background-color: white;">eel free to email me for opportunities or </span><span face="" style="background-color: white;">further questions</span><span face="" style="background-color: white;">! </span><span face="" style="background-color: white;">Applicants who have </span><span face="" style="background-color: white;">strong curiosity and </span><span face="" style="background-color: white;">good programing/mathematics background are particularly preferred.</span><br />
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-72473525423347238412016-06-21T23:22:00.000+08:002018-06-21T23:25:46.027+08:00Exploring deep Earth structure<div dir="ltr" style="text-align: left;" trbidi="on">
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<b>Related works:</b><br />
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<li style="margin: 0px 0px 0.25em; padding: 0px;">Zhang, Z.*^, K. Dueker, and <b>H.-H. Huang</b> (2018), Ps mantle transition zone imaging of the Colorado Rocky Mountains: Evidence for an upwelling hydrous mantle, <a href="https://www.sciencedirect.com/science/article/pii/S0012821X18301766" style="color: #0b5394; text-decoration-line: none;" target="_blank"><i>Earth Planet. Sci. Lett.</i>, 492, 197-205</a>. [<a href="https://www.dropbox.com/s/g0hian35q2o9tl1/29_Zhu%20et%20al._EPSL2018_Ps%20mantle%20transition%20zone%20imaging%20beneath%20the%20Colorado%20Rocky%20Mountains-%20Evidence%20for%20an%20upwelling%20hydrous%20mantle.pdf?dl=0" style="color: #0b5394; text-decoration-line: none;" target="_blank"><span style="color: #cc0000;">pdf</span></a>]</li>
<li><b><b style="background-color: white; font-family: arial, tahoma, helvetica, freesans, sans-serif; line-height: 20.02px;">Huang, H.-H.</b><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-weight: normal; line-height: 20.02px;">*, F.-C. Lin, V. C. Tsai, and K. D. Koper (2015), High-resolution probing of inner core structure with seismic interferometry, </span><a href="http://onlinelibrary.wiley.com/doi/10.1002/2015GL066390/abstract" style="background-color: white; color: #0b5394; font-family: arial, tahoma, helvetica, freesans, sans-serif; font-weight: normal; line-height: 20.02px;" target="_blank"><i>Geophys. Res. Lett.</i>, 42, doi:10.1002/2015GL066390.</a></b></li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-47838301390166593062015-11-08T04:13:00.001+08:002019-06-01T13:45:04.333+08:00Earthquake hazard mitigation<div dir="ltr" style="text-align: left;" trbidi="on">
Earthquakes are one of the most frequent natural hazards in Taiwan. To mitigate the level of their damage, the development of early warning system is of great importance on one hand <span style="color: blue;">(Wu et al., 2011)</span>; gaining better understanding of ground motion relations, such as medium attenuation, source characteristics (e.g. directivity), and site effects, is also critical on the other hand. With derived high resolution velocity models, we have analyzed the source properties of Nantou<span style="color: blue;"> (Lee et al., 2015)</span> and Ruisui earthquakes <span style="color: blue;">(Lee et al., 2014)</span> and demonstrated the capability of capturing realistic ground motions to some extent, especially across mountains and within basins, which could give us better insights into complicated wave propagation and help the hazard mitigation ultimately. More recently, we focus on the directional strong ground shaking of earthquakes and develop the directivity moment tensor inversion method (DMT) <span style="color: blue;">(Huang et al., 2017)</span> and near-field directional attenuation regression analysis <span style="color: blue;">(Jan et al., 2018)</span> for early estimation of rupture directivity and in turn more accurate shaking alerts in EEW system.<br />
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<b>Related works:</b><br />
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<li style="margin: 0px 0px 0.25em; padding: 0px;">Jan, J.-C., <b>H.-H. Huang</b>*, Y.-M. Wu, C.-C. Chen, and C.-H. Lin (2018), Near real-time estimates on earthquake rupture directivity using near-field ground motion data from a dense low-cost seismic network,<i> <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL078262" target="_blank">Geophys. Res. Lett.</a></i><a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL078262" target="_blank">, doi:10.1029/2018GL078262</a>.</li>
<li style="margin: 0px 0px 0.25em; padding: 0px;"><b>Huang, H.-H.</b>*, N. Aso*, and V. C. Tsai (2017), Toward automated directivity estimates in earthquake moment tensor inversion, <a href="https://academic.oup.com/gji/article/doi/10.1093/gji/ggx354/4085269/Toward-automated-directivity-estimates-in" style="color: #0b5394; text-decoration-line: none;" target="_blank"><i>Geophys. J. Int.</i>, 211, 1084-1098, doi:10.1093/gji/ggx354</a>.</li>
<li style="text-align: left;"><span style="line-height: 20.02px;"><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; line-height: 20.02px;">Kanamori, H.*, L. Ye, B.-S. Huang, <b>H.-H. Huang</b>, S.-J. Lee, W.-T. Liang, Y.-Y. Lin, K.-F. Ma, Y.-M. Wu, and T.-Y. Yeh (2017), A strong-motion hot spot of the 2016 Meinong, Taiwan, earthquake (Mw=6.4), <a href="http://tao.cgu.org.tw/index.php/articles/archive/geophysics/item/1511-2016100701mte" target="_blank">Terre. Atmos. Oceanic Sci., doi: 10.3319/TAO.2016.10.07.01</a>.</span></span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;">Lee, S.-J.*, T.-Y. Yeh, </span><b style="font-size: 14.3px; line-height: 20.02px;">H.-H. Huang</b><span style="font-size: 14.3px; line-height: 20.02px;">, and C.-H. Lin (2015), Numerical earthquake models of the 2013 Nantou, Taiwan, earthquake series: Characteristics of source rupture processes, strong ground motions and their tectonic implication, </span><a href="http://www.sciencedirect.com/science/article/pii/S1367912015300183" style="color: #0b5394; font-size: 14.3px; font-style: italic; line-height: 20.02px; text-decoration: none;" target="_blank">J. Asian Earth Sci.</a><a href="http://www.sciencedirect.com/science/article/pii/S1367912015300183" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank">, 111, 365-372.</a></span></span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;">Lee, S.-J.*, </span><b style="font-size: 14.3px; line-height: 20.02px;">H.-H. Huang</b><span style="font-size: 14.3px; line-height: 20.02px;">, J. B. H. Shyu, T.-Y. Yeh, and T.-C. Lin (2014), Numerical earthquake model of the 31 October 2013 Ruisui, Taiwan, Earthquake: Source rupture process and seismic wave propagation, </span><a href="http://www.sciencedirect.com/science/article/pii/S1367912014004337" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>J. Asian Earth Sci.</i>, 96, doi:10.1016/j.jseaes.2014.09.020</a><i style="font-size: 14.3px; line-height: 20.02px;">.</i></span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">Wu, Y.-M., T.-L. Lin*, W.-A. Chao, </span><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><b>H.-H. Huang</b></span><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">, N.-C. Hsiao and C.-H. Chang (2011), Faster short-distance earthquake early warning using continued monitoring of filtered vertical displacement ― a case study for the 2010 Jiasian earthquake, Taiwan.</span><i style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px;"> </i><a href="http://bssaonline.org/cgi/content/abstract/101/2/701" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Bull. Seismol. Soc. Am.</i>, 101, 701-709</a><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">.</span></li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-45902935830945195182015-08-10T07:38:00.001+08:002017-03-18T21:28:32.147+08:00Kinematic northeastern Taiwan seismicity<div dir="ltr" style="text-align: left;" trbidi="on">
The northeastern region of Taiwan is one of the few places on Earth that experienced a transition from collision to subduction and back-arc opening in a young orogenic belt. To study the structural characteristics in such a transition, the M<span style="font-size: xx-small;">L</span>≥3 earthquakes since 1994 to 2005 in the region are relocated, and the focal mechanisms of the events with M<span style="font-size: xx-small;">L</span>≥4 are determined for kinematic stress analysis.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://1.bp.blogspot.com/-hmZHTTN0emQ/WM01sxPzvtI/AAAAAAAAIe0/qML0Glm3iaQEP46jU6q01X3PDeO6sbOLQCLcB/s1600/NETaiwan_eqk_focal_demo.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="236" src="https://1.bp.blogspot.com/-hmZHTTN0emQ/WM01sxPzvtI/AAAAAAAAIe0/qML0Glm3iaQEP46jU6q01X3PDeO6sbOLQCLcB/s640/NETaiwan_eqk_focal_demo.jpg" width="640" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: left;">Figure The distribution of the epicenter shifts (blue bar) before and after relocation (left), relocated epicenters (middle), and determined focal mechanisms (right). Thrust, strike-slip, and normal fault types are categorized by the rake (thrust, 45° to 135°; normal, 45° to 135°; strike-slip, others) and denoted by red, green, and blue, respectively</td></tr>
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Data download<br />
<ul style="text-align: left;">
<li><a href="https://www.dropbox.com/s/84jsgfsqq0k5psh/NETaiwan_eqk_M3%2B.gmt?dl=0" target="_blank"><b>Relocated M<span style="font-size: xx-small;">L</span>≥3 earthquake catalog</b></a></li>
<li><b><a href="https://www.dropbox.com/s/qc8utcc7eohpkm7/NETaiwan_focal_M4%2B.gmt?dl=0" target="_blank">Determined M<span style="font-size: xx-small;">L</span>≥4 focal mechanisms</a></b></li>
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Citation</div>
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<ul style="text-align: left;">
<li>Huang, H.-H., J. B. H. Shyu, Y.-M. Wu, C.-H. Chang, and Y.-G. Chen (2012), Seismotectonics of northeastern Taiwan: Structural characteristics of a transitional area from wanning collision to subduction and post-collisional extension, <i>J. Geophys. Res.</i>, 117, B01313, doi:10.1029/2011JB008852</li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-12743422927162068522015-08-10T04:13:00.001+08:002017-03-18T21:23:28.872+08:00TW-PS-H14<div dir="ltr" style="text-align: left;" trbidi="on">
A new set of well-tuned Vp, Vs, and Vp/Vs models for Taiwan region are determined by an elaborate joint-inversion scheme that integrates the data of <i>P</i>- and <i>S</i>-wave travel times, <i>S-P</i> times, and the borehole logging data (for near-surface constraints) into one system. Data include 7,587 local earthquakes, 1050 stations (integrated from CWBSN, TSMIP, BATS, JMA, TAIGER, temporal OBS arrays, and Fujian seismic network, China), and a total of 200,051 readings of <i>P</i>-wave, <i>S</i>-wave, and <i>S-P</i> times, as well as 1,780 <i>P</i>- and <i>S</i>-logging data.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://3.bp.blogspot.com/-0ftk8zafEcE/WM00d4tsRRI/AAAAAAAAIeo/O3RT1RygkacoPwDQJ6wMDnaXWE7-qOv7wCLcB/s1600/Taiwan_local_vs_3D.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="372" src="https://3.bp.blogspot.com/-0ftk8zafEcE/WM00d4tsRRI/AAAAAAAAIeo/O3RT1RygkacoPwDQJ6wMDnaXWE7-qOv7wCLcB/s640/Taiwan_local_vs_3D.jpg" width="640" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: left;">Figure The 3-D perspective view of derived Vs model, displaying the subduction-collision process along the plate boundary from south to north. EP: Euraisn Plate, PSP: Philippine Sea Plate, TCR: thickened crustal root, FAB: forearc basement. See the detail descriptions in Huang et al. (2014). </td></tr>
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Model download<br />
<ul style="text-align: left;">
<li><a href="https://www.dropbox.com/s/njoode9pbve07xg/H14_local_vpvsmod.txt?dl=0" target="_blank"><b>3-D Vp, Vs, and Vp/Vs models</b></a></li>
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Related link<br />
<ul style="text-align: left;">
<li><b><a href="http://ds.iris.edu/ds/products/emc-tw-ps-h14/" target="_blank">IRIS EMC model page</a></b></li>
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Citation</div>
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<ul style="text-align: left;">
<li>Huang, H.-H., Y.-M. Wu, X. Song, C.-H. Chang, S.-J. Lee, T.-M. Chang, and H.-H. Hsieh (2014), Joint Vp and Vs tomography of Taiwan: Implications for subduction-collision orogeny, <i>Earth Planet. Sci. Lett.</i>, 392, 177-191</li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-53811550228528710922015-08-10T01:00:00.001+08:002017-03-18T21:21:17.427+08:00YS-P-H15<div dir="ltr" style="text-align: left;" trbidi="on">
The model integrates local earthquake and teleseismic travel-time data into one inversion to constrain the P-wave velocity structure of Yellowstone from the upper mantle to the upper crust. Data include 47,815 P-wave first arrivals from 4,520 local earthquakes and 4,605 relative arrival times from 329 teleseismic earthquakes recorded by 80 stations from the Yellowstone, Teton, and Snake River Plain regional seismic networks, the NOISY array, and the EarthScope USArray.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://2.bp.blogspot.com/-mrUYzAwuGjw/WM0zayzOsxI/AAAAAAAAIeg/5EkVMnr4k6AVOjSf_Rppma-fI13-bxAsgCLcB/s1600/YS_joint_Vp.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="246" src="https://2.bp.blogspot.com/-mrUYzAwuGjw/WM0zayzOsxI/AAAAAAAAIeg/5EkVMnr4k6AVOjSf_Rppma-fI13-bxAsgCLcB/s640/YS_joint_Vp.png" width="640" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><div style="text-align: left;">
Figure P-wave velocity structure of Yellowstone shown in map view at depths of 8 km (left) and 35 km (middle), and in cross-section AA' (right), revealing two crustal magma reservoirs beneath the caldera.</div>
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Model download<br />
<ul style="text-align: left;">
<li><b><a href="https://www.dropbox.com/s/1fkkd2m08p2z6n1/YS_vptomo_H15.txt?dl=0" target="_blank">3-D Vp model</a></b></li>
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Related link<br />
<ul style="text-align: left;">
<li><a href="http://ds.iris.edu/ds/products/emc-ys-p-h15/" target="_blank"><b>IRIS EMC model page</b></a></li>
</ul>
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Citation<br />
<ul style="text-align: left;">
<li>Huang, H.-H., F.-C. Lin, B. Schmandt, J. Farrell, R. B. Smith, and V. C. Tsai (2015), The Yellowstone magmatic system from the mantle plume to the upper crust, <i>Science</i>, 348, doi:10.1126/science.aaa5648</li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-86374185221840839222015-08-10T00:35:00.002+08:002017-03-18T21:25:52.063+08:00NVN-PPn-H13<div dir="ltr" style="text-align: left;" trbidi="on">
<span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif;"><span style="font-size: 14.3000001907349px; line-height: 20.0200004577637px;">The model is based on a </span></span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3000001907349px; line-height: 20.0200004577637px;">stepwise </span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3000001907349px; line-height: 20.0200004577637px;">inversion using crustal <i>P</i> and <i>Pn</i> phases to </span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3000001907349px; line-height: 20.0200004577637px;">obtain the local P-wave velocity model for the </span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif;"><span style="font-size: 14.3000001907349px; line-height: 20.0200004577637px;">Red River shear zone, northern Vietnam.</span></span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif;"><span style="font-size: 14.3000001907349px; line-height: 20.0200004577637px;"> Data</span></span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif;"><span style="font-size: 14.3000001907349px; line-height: 20.0200004577637px;"> include </span></span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3000001907349px; line-height: 20.0200004577637px;">6,482 travel time picks of crustal <i>P</i> and <i>Pn</i></span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3000001907349px; line-height: 20.0200004577637px;"> phases from 898 local </span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3000001907349px; line-height: 20.0200004577637px;">earthquakes and 51 stations</span><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif;"><span style="font-size: 14.3000001907349px; line-height: 20.0200004577637px;"> from Vietnam short-period seismic network and a portable broadband seismic network (Huang et al., 2009).</span></span><br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://4.bp.blogspot.com/-iNyS9U3Yx_g/WM006pRG6ZI/AAAAAAAAIes/4EQN6yLUPm8pGVY697TXNz1Vh5tEP93RgCLcB/s1600/Vietnam_RRSZ_tomoPPn_demo.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="450" src="https://4.bp.blogspot.com/-iNyS9U3Yx_g/WM006pRG6ZI/AAAAAAAAIes/4EQN6yLUPm8pGVY697TXNz1Vh5tEP93RgCLcB/s640/Vietnam_RRSZ_tomoPPn_demo.jpg" width="640" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: left;">Figure Inversion results for crustal <i style="font-size: 12.8px; text-align: left;">P</i><span style="font-size: 12.8px; text-align: left;"> (a) and mantle-lid </span><i style="font-size: 12.8px; text-align: left;">Pn</i><span style="font-size: 12.8px; text-align: left;"> velocities (b), and the derived Moho variation map (c). (a, b) Gray area is blanked by the resolution map. The red line and black circle denote the fault traces and the earthquakes projected within 5 km distance above and below. (c) The station delay times from </span><i style="font-size: 12.8px; text-align: left;">Pn</i><span style="font-size: 12.8px; text-align: left;"> velocity inversion are denoted by labels and translated into the variation of Moho depth in kilometer with color.</span></td></tr>
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Model download<br />
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<ul style="text-align: left;">
<li><a href="https://www.dropbox.com/s/fpmud00gfb1m34l/Vietnam_crust_P.gmt?dl=0" target="_blank"><b>Crustal Vp model</b></a></li>
<li><a href="https://www.dropbox.com/s/065vmkili46k22c/Vietnam_mantle_P.gmt?dl=0" target="_blank"><b>Mantle-lid Vp model</b></a></li>
<li><b><a href="https://www.dropbox.com/s/e8b0cov3ge9b6ma/Vietnam_Moho_depth.gmt?dl=0" target="_blank">Moho depth model</a></b></li>
</ul>
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Citation</div>
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<ul style="text-align: left;">
<li>Huang, H.-H., Z. Xu, Y.-M. Wu, X. Song, B.-S. Huang, and N. L. Minh (2013), First Local Seismic Tomography for Red River Shear Zone, northern Vietnam: Stepwise inversion employing crustal P and Pn waves, <i>Tectonophysics</i>, 584, 230-239</li>
<li>Huang, B.-S., T.-S. Le, C.-C. Liu, D. V. Toan, W.-G. Huang, Y.-M. Wu, Y.-G. Chen, and W.-Y. Chang (2009), Portable broadband seismic network in Vietnam for investigating tectonic deformation, the Earth's Interior, and early-warning systems for earthquakes and tsunamis, <i>J. Asian Earth Sci.</i>, 36, 110-118, doi: 10.1016/j.jseaes.2009.02.012</li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-47152553011526359352015-08-09T13:35:00.004+08:002017-03-18T21:30:18.373+08:004 March 2010 Mw 6.3 Jiasian, Taiwan earthquake sequence<div dir="ltr" style="text-align: left;" trbidi="on">
The Mw 6.3 Jiasian earthquake which occurred on 4 March 2010 caused large ground shaking and extensive damage in southern Taiwan. Its fault plane significantly differs from the nearby N-S striking Chaochou Fault as well as the NNE-SSW principal trend of Taiwan orogenic belt, and illuminates a undiscovered NW-SE striking deep thrust fault system. The relocated Jiasian earthquake sequence initiating from the 23-km-deep mainshock and terminating at around 10 km in depth also indicates it is likely a blind fault.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://4.bp.blogspot.com/-54NoJwcVung/WM02Jffxu_I/AAAAAAAAIe4/74sJNjavJt0LtiDjNNcgaekWLZR1QRIowCLcB/s1600/JiashanEqk_demo.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="216" src="https://4.bp.blogspot.com/-54NoJwcVung/WM02Jffxu_I/AAAAAAAAIe4/74sJNjavJt0LtiDjNNcgaekWLZR1QRIowCLcB/s640/JiashanEqk_demo.jpg" width="640" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: left;">Figure The distribution of stations (left), relocated Jiasian earthquake sequence and focal mechanisms in map view (middle) and in cross-section (right). Red lines are the active fault traces published by Central Geological Survey. The dashed gray line is the possible fault geometry.</td></tr>
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Data download<br />
<ul style="text-align: left;">
<li><a href="https://www.dropbox.com/s/s3biniz304fkhvr/Jiasian_eqkseq.gmt?dl=0" target="_blank"><b>Relocated hypocenter locations</b></a></li>
<li><b><a href="https://www.dropbox.com/s/ii8vxgs5n9zk63a/Jiasian_focal_M4%2B.gmt?dl=0" target="_blank">M<span style="font-size: xx-small;">L</span>≥4 focal mechanisms</a></b></li>
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Citation</div>
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<ul style="text-align: left;">
<li>Huang, H.-H., Y.-M. Wu, T.-L. Lin, W.-A. Chao, J. B. H. Shyu, C.-H. Chan, and C.-H. Chang (2011), The Preliminary Study of the 4 March 2010 Mw6.3 Jiasian, Taiwan, Earthquake Sequence, <i>Terre. Atmos. Oceanic Sci.</i>, 22, 3, 283-290.</li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-41887913070679593212015-07-25T01:01:00.001+08:002019-04-04T15:04:57.762+08:00Source properties and rupture behavior<div dir="ltr" style="text-align: left;" trbidi="on">
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I am interested in a broad spectrum of source properties and rupture behavior including determining the fundamental source directivity, understanding slow slip rupture, and exploring the seismic/aseismic triggering. A multiple seismic/aseismic slip behavior is found for Meinong earthquake, which implies complex and near-failure-state subsurface structure in southern Taiwan <span style="color: blue;">(Huang et al., 2016)</span>. Also, by stretching the source time function, we are developing a source inversion method that could simultaneous determine the moment tensor and directivity for intermediate-magnitude earthquakes, which has the potential to implement in real time <span style="color: blue;">(Huang et al., 2017)</span>.</div>
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<a href="https://3.bp.blogspot.com/-7qFN80BW-zk/WbnWO4YfYNI/AAAAAAAAItc/cuCes_-D3L428f2p7hNU3ABxQ0NZnL52gCLcBGAs/s1600/Meinong.png" imageanchor="0" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="717" data-original-width="1600" height="150" src="https://3.bp.blogspot.com/-7qFN80BW-zk/WbnWO4YfYNI/AAAAAAAAItc/cuCes_-D3L428f2p7hNU3ABxQ0NZnL52gCLcBGAs/s320/Meinong.png" /></a><a href="https://4.bp.blogspot.com/-WVH7PPKwy7k/WbnVXdGeiEI/AAAAAAAAItU/is8QEmSbnwMegzZbJ0pByCYkSf5dSZdhQCLcBGAs/s1600/DMT.jpg" imageanchor="0" style="clear: left; display: inline !important; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="1054" data-original-width="1600" height="150" src="https://4.bp.blogspot.com/-WVH7PPKwy7k/WbnVXdGeiEI/AAAAAAAAItU/is8QEmSbnwMegzZbJ0pByCYkSf5dSZdhQCLcBGAs/s200/DMT.jpg" /></a></div>
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<b style="text-align: justify;">Related works:</b><br />
<ul style="text-align: justify;">
<li style="margin: 0px 0px 0.25em; padding: 0px;">Huang, M.-H.* and <b style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; text-align: left;">H.-H. Huang</b><span style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; text-align: left;"> (2018), The complexity of the 2018 Mw6.4 Hualien earthquake in east Taiwan, </span><a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL080821" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; text-align: left; text-decoration-line: none;" target="_blank"><i>Geophys. Res. Lett.</i>, 45, doi:10.1029/2018GL080821</a><span style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; text-align: left;">.</span></li>
<li style="margin: 0px 0px 0.25em; padding: 0px;">Jan, J.-C., <b>H.-H. Huang</b>*, Y.-M. Wu, C.-C. Chen, and C.-H. Lin (2018), Near real-time estimates on earthquake rupture directivity using near-field ground motion data from a dense low-cost seismic network, <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL078262" target="_blank"><i>Geophys. Res. Lett.</i>, doi:10.1029/2018GL078262.</a></li>
<li><b>Huang, H.-H.</b>*, N. Aso*, and V. C. Tsai (2017), Toward automated directivity estimates in earthquake moment tensor inversion, <a href="https://academic.oup.com/gji/article/doi/10.1093/gji/ggx354/4085269/Toward-automated-directivity-estimates-in" target="_blank"><i>Geophys. J. Int.</i>, 211, 1084-1098, doi:10.1093/gji/ggx354</a>.</li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left;"><b><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;"><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">Huang, M.-H.*, H. Tung, E. Fielding, </span><b style="font-size: 14.3px; line-height: 20.02px;">H.-H. Huang</b><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">, C. Liang, C. Huang, and J.-C. Hu (2016), Multiple fault slip triggered above the 2016 Mw 6.4 MeiNong earthquake in Taiwan,</span><a href="http://onlinelibrary.wiley.com/doi/10.1002/2016GL069351/full" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Geophys. Res. Lett.</i>, 43, doi:10.1002/2016GL069351</a><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">.</span></span></span></b></span></li>
</ul>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-53645168257544387262015-07-20T11:00:00.000+08:002018-04-29T13:50:04.411+08:00Body-wave seismic interferometry <div dir="ltr" style="text-align: left;" trbidi="on">
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Recent success of body wave retrieval from noise or coda correlations that creates new 3-D paths other than laterally propagating surface waves has advanced our ability of probing and monitoring deep Earth. Growing applications have been made for imaging Moho and transition zone discontinuities, D” reflector, inner core structure, and potentially monitoring volcanic system at depth, showing great promise to complement earthquake-based data. Applying earthquake coda interferometry techniques to 1846 USArray stations deployed across North America from January 2004 through September 2013, we show that the spatial analysis of the differential travel time residuals between two core phases, PKIKP2 and PKIIKP2, reveals significant short-wavelength variation and implies the existence of strong structural variability in the deep Earth. Especially, a linear N-S trending anomaly across the middle of the U.S. may reflect an asymmetric quasi-hemispherical structure deep within the inner core with boundaries of 99°W and 88°E <span style="color: blue;">(Huang et al., 2015)</span>. Moreover, in collaboration with NASA Jet Propulsion Laboratory, we also prove the applicability of seismic interferometry to determining the discontinuity structure of Europa <span style="color: blue;">(Panning et al., 2017)</span>.<br />
<img border="0" height="250" src="https://1.bp.blogspot.com/-qmvVGHUPo3M/V47twxfPp8I/AAAAAAAAIJ0/JDIL0bearnEDzcIwc54RQEiNlQKqzN88ACLcB/s320/Fig1.jpg" style="text-align: justify;" /><img border="0" height="250" src="https://3.bp.blogspot.com/-h4urMTQNVUw/V47tuN56VSI/AAAAAAAAIJw/dBkJyb66l6wGSE-LaSaTBF9YTIJAZjSXACLcB/s320/Fig2.jpg" style="text-align: justify;" /></div>
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<br />
<b>Related works:</b><br />
<ul style="text-align: left;">
<li>Panning, M. P.*, S. C. Stahler, <b style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px;">H.-H. Huang</b><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px;">, S. D. Vance, S. Kedar, V. C. Tsai, W. T. Pike, and R. D. Lorenz, Expected seismicity and the seismic noise environment of Europa (2018), </span><a href="http://onlinelibrary.wiley.com/doi/10.1002/2017JE005332/abstract" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; text-decoration-line: none;" target="_blank"><i>J. Geophys. Res., </i>122, doi:10.1002/2017JE005332</a><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px;">.</span></li>
<li><b><b style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px;">Huang, H.-H.</b><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; font-weight: normal; line-height: 20.02px;">*, F.-C. Lin, V. C. Tsai, and K. D. Koper (2015), High-resolution probing of inner core structure with seismic interferometry, </span><a href="http://onlinelibrary.wiley.com/doi/10.1002/2015GL066390/abstract" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; font-weight: normal; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Geophys. Res. Lett.</i>, 42, doi:10.1002/2015GL066390.</a></b></li>
</ul>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-83741998125529156292014-02-17T14:02:00.004+08:002014-02-18T00:46:48.368+08:00Filter中參數p的特性<div dir="ltr" style="text-align: left;" trbidi="on">
<b>Command: </b><b>bp <span style="color: #cc0000;">p 1</span> n 4 c 0.02 0.1 & bp <span style="color: #cc0000;">p 2</span> n 4 c 0.02 0.1 </b><br />
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Some caution must be exercised in applying these filters. First, all recursive filters have non-linear phase, which can result in some dispersion of filtered waveforms. For applications where the phase of the resulting filtered waveform is important, a zero-phase implementation of the recursive filters is provided. <span style="color: blue;">Zero-phase filtering is possible by running the filter forward and backward over the data, instead of just forward over the data. This two-pass operation results in a effective filter magnitude response which is the square of the original magnitude response (Here is what the <b>p 2 </b>means). It also results in a non-causal filter impulse response, which can leave a signal containing a sharp time onset with a ringing precursor. For this reason, you should not measure arrival times of data that has been filtered using this two-pass option. For cases where signal precursors cannot be tolerated, such as onset picking operations, it may not be a good idea to do two-pass filtering (<b>p 1</b> is then preferable in this case).</span> Second, the filters can become numerically unstable if the width of the filter pass band is very small compared to the folding frequency of the data. The problem is only aggravated by increasing the number of poles in the filter. Situations that seem to require an exceptionally narrow band filter can be handled more reliably by decimation, filtering with a filter of more moderate band width, and interpolation to the original sampling rate. Recourse to this resampling strategy should be made when the filter band width drops below a few percent of the folding frequency (Excerpts from the <a href="http://www.iris.edu/files/sac-manual/commands/bandpass.html" target="_blank">SAC Command Reference Manual</a>)<br />
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In most cases the <b>p 1</b> is the preferable option to use, except the studies that particularly care about the phase shift, such as ambient noise cross-correlation, for example.<br />
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-31380691503329420002012-11-18T15:47:00.000+08:002018-10-06T23:10:00.310+08:00Full waveform inversion and modeling<div dir="ltr" style="text-align: left;" trbidi="on">
In addition to the strategy of incorporating multiple datasets as many as possible, utilizing the full information of seismic waveform becomes an appealing alternative recently. Benefited by the advances of numerical modeling techniques (e.g. SEM) and the application of adjoint theory in seismology. The full waveform tomography that is experimented successfully in south California (Chen et al., 2007; Tape et al., 2009) shows the potential for the new generation of tomography technique, in which the 3D off-path effects can also be considered more realistically. Current travel-time tomographic models of Taiwan region can simulate waveform up to 5-sec period (Huang et al., 2014). However, this achieved band has not been high enough for community applications (e.g. hazard mitigation), and more data (i.e. waveform information) and the 3D off-path effect have to be considered for higher frequency band. The high-density seismic network (station spacing ~5 km) and abundant earthquakes (~17,000/yr) in Taiwan is promising for the test of 3D full waveform tomography, but also very challenged by the great tectonic complexity in such small-scale region of Taiwan.<br />
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<b>Progress on AGU2014</b> [<a href="https://www.dropbox.com/s/x320n5sp6wnli4s/Huang_AGU2014_Taiwain_Adjoint_Tomo.pdf?dl=0" target="_blank"><span style="color: #cc0000;">poster</span></a>]<br />
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<b>Gallary</b><br />
<span style="font-family: , serif; text-align: justify;">–</span>A practice demo of the event kernel for an deep earthquake southeast offshore<br />
<a href="http://1.bp.blogspot.com/-wy9d3XK-riQ/Ux2CRJG9FyI/AAAAAAAAHJI/tBwgWtJG1_Y/s1600/event_kernel.png" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="197" src="https://1.bp.blogspot.com/-wy9d3XK-riQ/Ux2CRJG9FyI/AAAAAAAAHJI/tBwgWtJG1_Y/s1600/event_kernel.png" width="320" /></a><br />
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-62224333550782266482012-11-17T15:39:00.000+08:002019-09-21T09:44:32.291+08:00Seismic tomography and multi-dataset joint inversion<div dir="ltr" style="text-align: left;" trbidi="on">
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One of my main research focuses is on the tomographic joint inversion of multi-dataset to improving our knowledge of subsurface structures and related tectonics. The crustal P-wave and Pn wave data, for example, are usually analyzed separately for individual studies but they can be incorporated in a complementary sense. With the dataset from a newly deployed portable array in northern Vietnam, we employed both phases to obtain the first local seismic tomography for the Red River shear zone (RRSZ), and shows that the RRSZ could be a lithospheric structure at least cutting through the crust <span style="color: blue;">(Huang et al., 2013)</span>. Moreover, for Taiwan region we also developed an elaborating joint-inversion scheme for various datasets (P-, S-wave, S-P time data, and especially the borehole logging data for near-surface constraints) to derive Vp, Vs, and Vp/Vs models. These new set of models which have comparable resolution and internal consistency can facilitate the tectonic exploration, waveform simulation, etc. <span style="color: blue;">(Huang et al., 2014a)</span>. In order to expand the model resolution in depth, the teleseismic data is further measured and incorporated together to investigate the lithospheric structures and slab interaction in the upper mantle<span style="color: blue;"> (Huang et al., 2014b)</span>.</div>
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<img border="0" height="180" src="https://4.bp.blogspot.com/-51bIk4Lfl2E/TvqhsExXRGI/AAAAAAAAGRI/8zU3bjOR538/s200/Tomo.jpg" style="text-align: justify;" /> <a href="https://4.bp.blogspot.com/-h4Lt5y8i4Zs/WWCkImlGmVI/AAAAAAAAIoU/xPQ2cs2Jx6QkQJXoumu76kiHGRoZLVbDACLcBGAs/s1600/Taiwan_local_vs_3D.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" data-original-height="934" data-original-width="1600" height="180" src="https://4.bp.blogspot.com/-h4Lt5y8i4Zs/WWCkImlGmVI/AAAAAAAAIoU/xPQ2cs2Jx6QkQJXoumu76kiHGRoZLVbDACLcBGAs/s200/Taiwan_local_vs_3D.jpg" /></a></div>
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<li><b style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px;"><b style="font-size: 14.3px; line-height: 20.02px;">Huang, H.-H.</b><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">*, F.-C. Lin, B. Schmandt, J. Farrell, R. B. Smith, and V. C. Tsai (2015), The Yellowstone magmatic system from the mantle plume to the upper crust, </span><a href="http://www.sciencemag.org/content/348/6236/773.abstract" style="color: #0b5394; font-size: 14.3px; font-weight: normal; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Science</i>, 348, doi:10.1126/science.aaa5648</a><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">.</span></b></li>
<li style="margin: 0px 0px 0.25em; padding: 0px;"><b>Huang, H.-H.</b>*, Y.-M. Wu, X. Song, C.-H. Chang, H. Kuo-Chen, and S.-J. Lee (2014), Investigating the lithospheric structures beneath Taiwan region by nonlinear joint inversion of local and teleseismic <i>P</i>-wave data: Slab continuity and deflection, <a href="http://onlinelibrary.wiley.com/doi/10.1002/2014GL061115/abstract" style="color: #0b5394; text-decoration: none;" target="_blank"><i>Geophys. Res. Lett.</i>, 41, doi:10.1002/2014GL061115</a>.</li>
<li><b style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px;">Huang, H.-H.</b><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">*, Y.-M. Wu, X. Song, C.-H. Chang, S.-J. Lee, T.-M. Chang, and H.-H. Hsieh (2014), Joint Vp and Vs tomography of Taiwan: Implications for subduction-collision orogeny, </span><a href="http://www.sciencedirect.com/science/article/pii/S0012821X14000995#" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Earth Planet. Sci. Lett.</i>, 392, 177-191</a><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">.</span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">Koulakov, I.*, Y.-M. Wu, </span><b style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px;">H.-H. Huang</b><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">, N. Dobretsov, A. Jakovlev, I. Zabelina, and K. Jaxybulatov (2014), Slab interactions in the Taiwan region based on the P- and S-velocity distributions in the upper mantle, </span><a href="http://www.sciencedirect.com/science/article/pii/S1367912013005026#" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>J. Asian Earth Sci.</i>, 79, 53-64</a><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">.</span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><b>Huang, H.-H.</b>*</span><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">, Z. Xu, Y.-M. Wu, X. Song**, B.-S. Huang, and N. L. Minh (2013), First Local Seismic Tomography for Red River Shear Zone, northern Vietnam: Stepwise inversion employing crustal </span><i style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px;">P</i><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"> and </span><i style="background-color: white; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px;">Pn</i><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"> waves, </span><a href="http://www.sciencedirect.com/science/article/pii/S0040195112001850" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Tectonophysics, special issue: Active Tectonic Deformation of the Tibetan Plateau and Great Earthquakes</i>, 584, 230-239</a><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">.</span></li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-71845619556136193382012-11-16T15:44:00.000+08:002018-02-12T21:04:28.940+08:00Seismotectonics and regional tectonic reconstruction<div dir="ltr" style="text-align: left;" trbidi="on">
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I am interested in exploring and reconstructing the regional tectonics in various aspects. Conducted issues, for instance, include constructing the structural kinematic model of northeastern Taiwan by spatial analyses of seismicity and stress <span style="color: blue;">(Huang et al., 2012)</span>, delineating the complex Moho geometry in Taiwan arc-continent collision system using Genetic-algorithm 1D velocity inversion and local tomography mapping technique <span style="color: blue;">(Ustaszewski et al., 2012)</span>, and proposing an ongoing tectonic erosion process of forearc basement beneath the southernmost Longitudinal Valley, based on local tomographic images and two earthquake sequences in the eastern Taiwan <span style="color: blue;">(Shyu et al., 2011)</span>.</div>
<img border="0" height="200" src="https://1.bp.blogspot.com/-5FI4itywzQs/TvqYIS8OGpI/AAAAAAAAGQk/DMVX3jGbE_U/s200/Stress_inv.jpg" /> <img border="0" height="200" src="https://4.bp.blogspot.com/-gFlp_FCoq38/TvqVdSC2rtI/AAAAAAAAGQY/-V1B8Za-tro/s200/SectionBB%2527.png" /><br />
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<b>Related works:</b><br />
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<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><b><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;">Brown, D.*, Y.-M. Wu, K.-F. Feng, W.-A. Chao, and </span><b style="font-size: 14.3px; line-height: 20.02px;">H.-H. Huang</b><span style="font-size: 14.3px; line-height: 20.02px;"> (2015), Imaging high-pressure rock exhumation in eastern Taiwan, </span><a href="http://geology.gsapubs.org/content/early/2015/06/04/G36810.1.abstract" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Geology</i>, 43(7), doi:10.1130/G36810.1.</a></span></b></span></li>
<li><b style="font-family: arial, tahoma, helvetica, freesans, sans-serif; font-size: 14.3px; line-height: 20.02px;"><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">Camanni, G.*, C.-H. Chen, D. Brown, J. Alvarez-Marron, Y.-M. Wu, H.-A. Chen, </span><b style="font-size: 14.3px; line-height: 20.02px;">H.-H. Huang</b><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">, H.-T. Chu, M.-M. Chen, and C.-H. Chang (2013), Basin inversion in central Taiwan and its importance for seismic hazard, </span><a href="http://geology.gsapubs.org/content/early/2013/12/12/G35102.1.abstract?cited-by=yes&legid=geology;G35102.1v1" style="color: #0b5394; font-size: 14.3px; font-weight: normal; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Geology</i>, doi: 10.1130/G35102.1</a><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">.</span></b></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><b><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;">Ustaszewski, K.* , Y.-M. Wu, J. Suppe, </span><span style="font-size: 14.3px; line-height: 20.02px;"><b>H.-H. Huang</b></span><span style="font-size: 14.3px; line-height: 20.02px;">, C.-H. Chang, and S. Carena (2012), Crust-mantle boundaries in the Taiwan - Luzon arc-continent collision system determined from local earthquake tomography and 1D models: Implications for the mode of subduction polarity reversal, </span><a href="http://ac.els-cdn.com/S0040195111005385/1-s2.0-S0040195111005385-main.pdf?_tid=e7e5e11a-2988-11e2-a11f-00000aacb35e&acdnat=1352368055_19e7b657a6078ad6d2abfc837bed3c54" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Tectonophysics, special issue: Geodynamics and Environment in East Asia</i>, 578, 31-49</a><span style="font-size: 14.3px; line-height: 20.02px;">.</span></span></b></span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><b>Huang, H.-H.</b></span><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">, J. B. H. Shyu*, Y.-M. Wu, C.-H. Chang, and Y.-G. Chen (2012), Seismotectonics of northeastern Taiwan: Structural characteristics of a transitional area from wanning collision to subduction and post-collisional extension, </span><a href="http://www.agu.org/pubs/crossref/2012/2011JB008852.shtml" style="background-color: white; color: #0b5394; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>J. Geophys. Res.</i>, 117, B01313, doi:10.1029/2011JB008852</a><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;">.</span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;">Shyu, J. B. H.*, Y.-M. Wu, C.-H. Chang, and </span><span style="font-size: 14.3px; line-height: 20.02px;"><b>H.-H. Huang</b></span><span style="font-size: 14.3px; line-height: 20.02px;"> (2011), Tectonic erosion and the removal of forearc lithosphere during arc-continent collision: Evidence from recent earthquake sequences and tomography results in eastern Taiwan, </span><a href="http://www.sciencedirect.com/science/article/pii/S1367912011002161" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>J. Asian Earth Sci.</i>, 42, 415-422</a><span style="font-size: 14.3px; line-height: 20.02px;">.</span></span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;">Hou, C.-S., J.-C. Hu*, K.-E. Ching, Y.-G. Chen, C.-L. Chen, L.-W. Cheng, C.-L. Tang, </span><span style="font-size: 14.3px; line-height: 20.02px;"><b>H.-H. Huang</b></span><span style="font-size: 14.3px; line-height: 20.02px;">, and C.-H. Lo (2009), The crustal deformation of the Ilan Plain acted as a westernmost extension of the Okinawa Trough, </span><a href="http://www.sciencedirect.com/science/article/pii/S0040195107003605" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Tectonophysics</i>, 466, 344-355</a><span style="font-size: 14.3px; line-height: 20.02px;">.</span></span></li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.comtag:blogger.com,1999:blog-208638690211864240.post-11879108992533896302012-11-15T15:46:00.000+08:002019-09-21T09:46:20.681+08:00Unusual earthquake sequence analysis and its tectonic implications<div dir="ltr" style="text-align: left;" trbidi="on">
<a href="https://2.bp.blogspot.com/-EU-xC5t87j0/TvqNY0FIGtI/AAAAAAAAGP0/LmnidGC8rbY/s1600/JiashanEqk.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" src="https://2.bp.blogspot.com/-EU-xC5t87j0/TvqNY0FIGtI/AAAAAAAAGP0/LmnidGC8rbY/s200/JiashanEqk.jpg" width="280" /></a>
This topic aims at investigating some out-of-the-ordinary earthquakes against the background tectonics. For example, in the case of a large inland earthquake, 4 March 2010 M<span style="font-size: xx-small;">W</span> 6.3 Jiasian, Taiwan earthquake, occurring in a seismic gap, we integrated the strong motion data to better relocate the earthquake sequence, determined the focal mechanisms, and discussed their implications to tectonics and hazard mitigation for southern Taiwan<span style="color: blue;"> (Huang et al., 2011)</span>. Two years later, the M<span style="font-size: xx-small;">L</span> 6.4 Wutai, Taiwan earthquake occurred nearby and a bit deeper. Using a P-wave polarity fitting method, we also reexamined its source parameters for tectonic discussion <span style="color: blue;">(Chen et al., 2013)</span>.<br />
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<b>Related works:</b><br />
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<li style="text-align: left;"><span style="line-height: 20.02px;"><span style="font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; line-height: 20.02px;">Huang, M.-H.*, H. Tung, E. Fielding, <b>H.-H. Huang</b>, C. Liang, C. Huang, and J.-C. Hu (2016), Multiple fault slip triggered above the 2016 Mw 6.4 MeiNong earthquake in Taiwan, <a href="http://onlinelibrary.wiley.com/doi/10.1002/2016GL069351/full" target="_blank">Geophys. Res. Lett., 43, doi:10.1002/2016GL069351</a>.</span></span></li>
<li><b style="font-family: arial, tahoma, helvetica, freesans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left;"><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;"><span style="font-size: 14.3px; line-height: 20.02px;">Lee, T. T.-Y., C.-H. Chan, J. B. H. Shyu*, Y.-M. Wu, and </span><b style="font-size: 14.3px; line-height: 20.02px;">H.-H. Huang</b><span style="font-size: 14.3px; line-height: 20.02px;"> (2015), Induced transtensional earthquakes after the 1999 Chi-Chi earthquake in the compressional collision belt of western Taiwan, </span><a href="http://gji.oxfordjournals.org/content/200/1/638.full" style="color: #0b5394; font-size: 14.3px; line-height: 20.02px; text-decoration: none;" target="_blank"><i>Geophys. J. Int.</i>, 200(1), 638-651</a><span style="font-size: 14.3px; line-height: 20.02px;">.</span></span></b></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left;"><b><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">Chen, C.-H., </span><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;"><b>H.-H. Huang</b></span><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">, W.-A. Chao, Y.-M. Wu*, and C.-H. Chang (2013), Re-examining the source parameter of the 2012 Wutai, Taiwan Earthquake, </span><a href="http://tao.cgu.org.tw/pdf/v245p827.pdf" style="color: #0b5394; font-size: 14.3px; font-weight: normal; line-height: 20.02px; text-decoration: none;" target="_blank">Terre. Atmos. Oceanic Sci., 245, 5, 827-835</a><span style="font-size: 14.3px; font-weight: normal; line-height: 20.02px;">.</span></b></span></li>
<li><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left;"><b>Huang, H.-H.</b></span><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left;">, Y.-M. Wu*, T.-L. Lin, W.-A. Chao, J. B. H. Shyu, C.-H. Chan, and C.-H. Chang (2011), The Preliminary Study of the 4 March 2010 Mw6.3 Jiasian, Taiwan, Earthquake Sequence,</span><i style="background-color: white; font-family: arial, tahoma, helvetica, freesans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left;"> </i><a href="http://tao.cgu.org.tw/index.php?id=1013" style="background-color: white; color: #0b5394; font-family: arial, tahoma, helvetica, freesans, sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left; text-decoration: none;" target="_blank"><i>Terre. Atmos. Oceanic Sci.</i>, 22, 3, 283-290</a><span style="background-color: white; font-family: "arial" , "tahoma" , "helvetica" , "freesans" , sans-serif; font-size: 14.3px; line-height: 20.02px; text-align: left;">.</span></li>
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阿布查http://www.blogger.com/profile/14215206479786341899noreply@blogger.com