scholarly journals The 1995 Colima-Jalisco, Mexico, Earthquake (Mw 8): A study of the rupture process

1997 ◽  
Vol 24 (9) ◽  
pp. 1019-1022 ◽  
Author(s):  
Françoise Courboulex ◽  
Shri K. Singh ◽  
Javier F. Pacheco ◽  
Charles J. Ammon
Author(s):  
Yangmao Wen ◽  
Zhuohui Xiao ◽  
Ping He ◽  
Jianfei Zang ◽  
Yang Liu ◽  
...  

Abstract On 23 June 2020, an Mw 7.4 earthquake struck offshore Oaxaca, Mexico, providing a unique opportunity to understand the seismogenic tectonics of the Mexican subduction zone. In this study, near-field coseismic deformation caused by the event was retrieved from Global Positioning System (GPS) observations and Interferometric Synthetic Aperture Radar (InSAR) measurements. Given static geodetic measurements, high-rate GPS waveforms, and teleseismic waveforms, the fault geometry and rupture process for the 2020 Oaxaca earthquake were robustly determined by nonlinear joint inversions. The main slip was located at a depth of 20–30 km with a peak slip of 3.4 m near the epicenter. The total released moment was 1.70×1020  N·m, corresponding to Mw 7.4. The whole rupture process lasted 14 s, with the dominant rupture slip occurring 5–8 s after initial rupture. The mainshock rupture mostly occurred along the fault strike, covering a size of ∼55  km(along strike)×∼35  km(along dip) and totally overlapping with the 1965 Mw 7.5 rupture zone. We speculate that this 2020 earthquake is a repeat event following that in 1965. Fluid percolation under the slab may be one of the key factors affecting the seismogenic depth in the Oaxaca region.


Nature ◽  
2017 ◽  
Author(s):  
Emiliano Rodríguez Mega
Keyword(s):  

2021 ◽  
Vol 56 ◽  
pp. 102123
Author(s):  
Eber Alberto Godínez-Domínguez ◽  
Arturo Tena-Colunga ◽  
Luis Eduardo Pérez-Rocha ◽  
Hans Israel Archundia-Aranda ◽  
Alonso Gómez-Bernal ◽  
...  

1993 ◽  
Vol 20 (18) ◽  
pp. 1907-1910 ◽  
Author(s):  
L. E. Jones ◽  
S. E. Hough ◽  
D. V. Helmberger
Keyword(s):  

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