TY - JOUR
T1 - Joint inversion of teleseismic and InSAR datasets for the rupture process of the 2010 Yushu, China, earthquake
AU - Yokota, Yusuke
AU - Kawazoe, Yasuyuki
AU - Yun, Sunhe
AU - Oki, Satoko
AU - Aoki, Yosuke
AU - Koketsu, Kazuki
PY - 2012
Y1 - 2012
N2 - We have examined the rupture process of the 2010 Yushu, China, earthquake, which occurred in the eastern Tibetan plateau. Based on the results of centroid location grid searches, the aftershock distribution, and InSAR observations, we first constructed a left-lateral strike-slip bending fault model. We then carried out joint inversions of the teleseismic waveform data and InSAR data using various rupture front velocities. We obtained the optimum source model with a seismic moment of 2.3 × 1019 N m (Mw ∼ 6.8), where the rupture velocity was found to be slightly faster than the shear wave velocity of the crust in this region. This supershear rupture velocity resulted in severe damage in and around the county seat of Yushu, which is located in the forward rupture direction of the source model. The features of this event, such as the shallow and fast rupture propagation may represent a seismic feature of the tectonic activity in the eastern Tibetan plateau.
AB - We have examined the rupture process of the 2010 Yushu, China, earthquake, which occurred in the eastern Tibetan plateau. Based on the results of centroid location grid searches, the aftershock distribution, and InSAR observations, we first constructed a left-lateral strike-slip bending fault model. We then carried out joint inversions of the teleseismic waveform data and InSAR data using various rupture front velocities. We obtained the optimum source model with a seismic moment of 2.3 × 1019 N m (Mw ∼ 6.8), where the rupture velocity was found to be slightly faster than the shear wave velocity of the crust in this region. This supershear rupture velocity resulted in severe damage in and around the county seat of Yushu, which is located in the forward rupture direction of the source model. The features of this event, such as the shallow and fast rupture propagation may represent a seismic feature of the tectonic activity in the eastern Tibetan plateau.
KW - Fast rupture
KW - InSAR data
KW - Joint inversion
KW - Source process
KW - Tectonic activity
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U2 - 10.5047/eps.2012.04.008
DO - 10.5047/eps.2012.04.008
M3 - Article
AN - SCOPUS:84876362350
SN - 1343-8832
VL - 64
SP - 1047
EP - 1051
JO - Earth, Planets and Space
JF - Earth, Planets and Space
IS - 11
ER -