[1]QIAN Xiao-dong,Qin Jia-zheng.2010 Earthquake in Yushu,Qinghai Province and Strong Earthquake Trend Analysis of the Qinghai-Tibet Plateau after the Earthquake[J].Journal of Seismological Research,2010,33(04):255-264.
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2010 Earthquake in Yushu,Qinghai Province and Strong Earthquake Trend Analysis of the Qinghai-Tibet Plateau after the Earthquake
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
33
Number of periods:
2010 04
Page number:
255-264
Column:
Public date:
2010-04-23
- Title:
- 2010 Earthquake in Yushu,Qinghai Province and Strong Earthquake Trend Analysis of the Qinghai-Tibet Plateau after the Earthquake
- CLC:
- P315.72+7
- DOI:
- -
- Abstract:
- On April 14,2010,an earthquake of magnitude 7.1 occurred in Yushu,Qinghai Province,it is the strongest earthquake that have ever taken place in this region.The earthquake is a strike-slip earthquake in the plateau,the Bayankala block south boundary.Seismogenic fault is Ganzi-Yushu-Fenghuoshan left-lateral and strike-slip fault,the earthquake major rupture to the southeast of the epicenter.The earthquake results from the Bayankala block and Qiangtang block east at different rates of movement,differential movement between the block boundary to accumulate stress to a certain extent to trigger fault rupture.Based on scaling law,fault rupture and stress parameters of the MS7.1 Yushu earthquake are estimated,resulting the seismic moment M0=1.78×1019 N·m,moment magnitue MW=6.8,area S=468 km2,maximum offset D=1.4 m,fault length L=37 km,the width W=12.6 km,shear stress τ0=16.8 MPa,stress drop Δσ=7.03 MPa.Analysis on historical earthquakes shows that Yushu magnitude 7.1 earthquake occurred in the world for more than magnitude 8 earthquake,in West China Triangle over magnitude 7.8 earthquake,north-south seismic zone earthquakes above magnitude 7 and the Bayankala block more than magnitude 7 earthquake in the context of intense activity.After the earthquake Yushu,Bayankala block and Qiangtang block and the Sichuan-Yunnan Rhombic block of Qinghai-Tibet Plateau future occurrence of more than magnitude 7 earthquake in more dangerous.
- References:
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Last Update:
2010-04-23