+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Rupture History of the 2008 Mw 79 Wenchuan, China, Earthquake Evaluation of Separate and Joint Inversions of Geodetic, Teleseismic, and Strong-Motion Data



Rupture History of the 2008 Mw 79 Wenchuan, China, Earthquake Evaluation of Separate and Joint Inversions of Geodetic, Teleseismic, and Strong-Motion Data



Bulletin of the Seismological Society of America



An extensive data set of teleseismic and strong-motion waveforms and geodetic offsets is used to study the rupture history of the 2008 Wenchuan, China, earthquake. A linear multiple-time-window approach is used to parameterize the rupture. Because of the complexity of the Wenchuan faulting, three separate planes are used to represent the rupturing surfaces. This earthquake clearly demonstrates the strengths and limitations of geodetic, teleseismic, and strong-motion data sets. Geodetic data (static offsets) are valuable for determining the distribution of shallower slip but are insensitive to deeper faulting and reveal nothing about the timing of slip. Teleseismic data in the distance range 30°–90° generally involve no modeling difficulties because of simple ray paths and can distinguish shallow from deep slip. Teleseismic data, however, cannot distinguish between different slip scenarios when multiple fault planes are involved because steep takeoff angles lead to ambiguity in timing. Local strong-motion data, on the other hand, are ideal for determining the direction of rupture from directivity but can easily be over modeled with inaccurate Green’s functions, leading to misinterpretation of the slip distribution. We show that all three data sets are required to give an accurate description of the Wenchuan rupture. The moment is estimated to be approximately with the slip characterized by multiple large patches with slips up to 10 m. Rupture initiates on the southern end of the Pengguan fault and proceeds unilaterally to the northeast. Upon reaching the cross-cutting Xiaoyudong fault, rupture of the adjacent Beichuan fault starts at this juncture and proceeds bilaterally to the northeast and southwest.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 036755170

Download citation: RISBibTeXText

DOI: 10.1785/0120120108


Related references

Joint inversion of teleseismic and strong motion data for the rupture process of the 2008 Wenchuan, China, earthquake. Geophysical Research Abstracts 12, 2010

Slip History of the 1995 Kobe, Japan, Earthquake Determined from Strong Motion, Teleseismic, and Geodetic Data. Journal of Physics of the Earth 44(5): 489-503, 1996

Rupture process of the 1999 Mw 71 Duzce earthquake from joint analysis of SPOT, GPS, InSar, strong-motion, and teleseismic data; a supershear rupture with variable rupture velocity. Bulletin of the Seismological Society of America 100.1, 2010

Rupture process of the 2008 Iwate-Miyagi Nairiku earthquake Mj 72, Japan, inferred from strong motion and geodetic data. Eos, Transactions, American Geophysical Union 89.53, Suppl., 2008

The rupture process during the 1999 Duzce, Turkey, earthquake from joint inversion of teleseismic and strong-motion data. Tectonophysics 391(1-4): 315-324, 2004

Coseismic kinematic slip model for the 12 May 2008 Wenchuan-Beichuan Mw 79 earthquake in Sichuan, China from joint inversion of ALOS, Envisat, GPS and teleseismic data and preliminary postseismic; InSAR. Eos, Transactions, American Geophysical Union 90.52, Suppl, 2009

Rupture Process of the 23 October 2011 Mw7.1 Van Earthquake in Eastern Turkey by Joint Inversion of Teleseismic, GPS and Strong-Motion Data. Pure and Applied Geophysics 172(6): 1383-1396, 2015

Rupture process of the 2009 LAquila, Italy, earthquake inferred from inversions of teleseismic and strong motion datasets. Geophysical Research Abstracts 12, 2010

Rupture process of 2011 Mw7.1 Van, Eastern Turkey earthquake from joint inversion of strong-motion, high-rate GPS, teleseismic, and GPS data. Journal of Seismology 19(4): 969-988, 2015

Source rupture process of the 2003 Tokachi-oki earthquake determined by joint inversion of teleseismic body wave and strong ground motion data. Earth, Planets and Space 56(3): 311-316, 2004

Rupture kinematics and strong ground motion estimates of the 2005, Mw 8.6, Nias-Simeulue earthquake from the joint inversion of seismic and geodetic data. Seismological Research Letters 77(2): 225-226, 2006

Inversion of strong ground motion and teleseismic waveform data for the fault rupture history of the 1979 Imperial Valley, California, earthquake. Bulletin of the Seismological Society of America 73(6, Part A): 1553-1583, 1983

Rupture process of the 2008 Wenchuan, China earthquake inferred from teleseismic waveform inversion and forward modeling of broadband seismic waves. Tectonophysics 491.1-4, 2010

Source process of the 1923 Kanto earthquake from geodetic, teleseismic and strong motion data. Eos, Transactions, American Geophysical Union 84(46, Suppl, 2003

A multidisciplinary source analysis of the 1994 (M (sub w) 6.7) Northridge earthquake using strong motion, teleseismic, and geodetic data. Seismological Research Letters: -4, Pages 241. 1994., 1994