Combined GPS and InSAR Models of Postseismic Deformation from the Northridge Earthquake

被引：0

作者：

A. Donnellan

J. W. Parker

G. Peltzer

机构：

[1] Jet Propulsion Laboratory,

[2] California Institute of Technology,undefined

[3] 4800 Oak Grove Drive,undefined

[4] Pasadena,undefined

[5] California,undefined

[6] U.S.A. and University of Southern California,undefined

[7] Los Angeles,undefined

[8] California,undefined

[9] U.S.A. E-mail: donnellan@jpl.nasa.gov,undefined

[10] Jet Propulsion Laboratory,undefined

[11] California Institute of Technology,undefined

[12] 4800 Oak Grove Drive,undefined

[13] Pasadena,undefined

[14] California,undefined

[15] U.S.A. E-mail: Jay.W.Parker@jpl.nasa.gov,undefined

[16] Jet Propulsion Laboratory,undefined

[17] California Institute of Technology,undefined

[18] 4800 Oak Grove Drive,undefined

[19] Pasadena,undefined

[20] California,undefined

[21] U.S.A. and University of California,undefined

[22] Los Angeles,undefined

[23] California,undefined

[24] U.S.A. E-mails: Gilles.F.Peltzer@jpl.nasa.gov,undefined

[25] mailto: peltzer@ess.ucla.edu,undefined

来源：

pure and applied geophysics | 2002年 / 159卷

关键词：

Key words: Earthquake, InSAR, GPS, afterslip, Northridge.;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

—Models of combined Global Positioning System (GPS) and Interferometric Synthetic Aperture Radar (InSAR) data collected in the region of the Northridge earthquake indicate that significant afterslip on the main fault occurred following the earthquake. Additional shallow deformation occurred to the west of the main rupture plane. Both data sets are consistent with logarithmic time-dependent behavior following the earthquake indicative of afterslip rather than postseismic relaxation. Aftershocks account for only about 10% of the postseismic motion. The two data sets are complimentary in determining the postseismic processes. Fault afterslip and shallow deformation dominate the deformation field in the two years following the earthquake. Lower crustal deformation may play an important role later in the earthquake cycle.

引用

页码：2261 / 2270

页数：9