Hsin-Hua Huang: 4 March 2010 Mw 6.3 Jiasian, Taiwan earthquake sequence

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.

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.

Data download

Citation

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, Terre. Atmos. Oceanic Sci., 22, 3, 283-290.

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2020/5/18:

Our work about detecting precursory seismic velocity changes (dv/v) prior to the 2018 May 2 Kilauea Hawaii volcano was accepted by Earth, Planets and Space, in which a spatiotemporal dv/v evolution in relation to multi-stage magma intrusion processes between the summit reservoirs and East Rift Zone dike system is illuminated and discussed.

2020/1/15:

IES & ESLab 2019 year-end party~

2019/12/4:

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2019/9/27:

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2019/7/9:

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2019/6/19:

Congratulations to Jen Chu who received the grant of College Student Research Program from MOST!

2019/2/15:

ESLab go hiking for new year of the pig!

2019/1/12:

2018 year-end party of ESLab at Shin Yeh~

2019/1/9:

We are now recruiting an research assistant for the Academia Sinica thematic project of Landslide monitoring. Please click the [ad] for more details if you are interested! (position filled)

2018/12/5:

Our work using seismic and geodetic data to jointly constrain the multi-fault geometry and coseismic slips of the Hualien earthquake is just coming out on Geophys. Res. Lett.. 5-month postseismic data is also processed and shows significant displacement occurred at the Milun fault.

2018/8/31:

Congratulations to my summer program interns who won the 2nd position Poster Competition Award :)

2018/7/31:

Congratulations to Yu-Fang Hsu who received MOST College Student Research Award!

2018/7/14:

Our work about using near-field ground motion data to constrain earthquake rupture directivity in near real time has been accepted by Geophys. Res. Lett., which demonstrates a possibility of incorporating directivity information into EEW system for more accurate shaking alerts.

2018/5/3:

Congratulations to Yu-Fang Hsu who won outstanding student poster award in Geological and Geophysical Annual Meeting!

2018/3/20:

Based at Earthquake Research Institute, University of Tokyo as a visiting researcher for one month

2018/2/9:

Group photo of Earth Structure Lab taken at IES weiya party~

2017/10/18:

Our three series papers about planetary seismology has been accepted in journal Astrobiology and JGR this year, and in the one of JGR papers, we demonstrate the usefulness of seismic interferometry to obtaining discontinuity structure beneath single station in Europa.

2017/10/6:

Group photo for a dense geophone array deployment at Lantai landslide area

2017/9/1:

Congratulations to my summer program interns who won the 3rd position Poster Competition Award :)

2017/8/20:

We have recently developed a method to estimate primary rupture directivity in earthquake moment tensor inversion that has the potential to be automated in real time. The paper is just coming out in journal GJI.

2017/6/9:

Congratulations to En-Shih Wu who received the grant of College Student Research Program from MOST!

2017/3/17:

Seismology Forum 2017: Natural Hazards and Surface Processes is held this year on Mar 17 at IES, with a theme aiming to cover a wide range of topics such as landslide and volcanic hazards which recently gain much attention in Taiwan. Welcome to join us! [agenda]

2017/1/10:

Welcome to join the Earth Structure Laboratory (ESLab) at IESAS.

2016/10/08:

Two new papers about Mw 6.4 Meinong earthquake in southern Taiwan has been online! We discuss its triggered aseismic slips at a shallow fault [GRL], and the possible effects on anomalously large S-wave pulses striking Tainan area [TAO].

2016/10/01:

Officially move back to Taiwan and start a faculty position as assistant research fellow at Institute of Earth Sciences, Academia Sinica. Prospective students and postdocs enthusiastic about exploring Earth structure and seismotectonics are wanted!

2015/12/23:
Our new work using earthquake coda interferometry to probing inner core structure is published in journal GRL.

2015/05/15:
Employing joint inversion of local earthquake and teleseismic data, we unveiled the second larger magma reservoir in the lower crust beneath the Yellowstone. The works has been published in journal Science. (click the link for a 3-D demonstration of Yellowstone magamatic system)