Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/62476
Title: Geodetic model of the 2015 April 25 M-w 7.8 Gorkha Nepal earthquake and M-w 7.3 aftershock estimated from InSAR and GPS data
Authors: Feng, G
Li, Z
Shan, X
Zhang, L 
Zhang, G
Zhu, J
Keywords: Satellite geodesy
Radar interferometry
Earthquake source observations
Seismicity and tectonics
Issue Date: 2015
Publisher: Oxford University Press
Source: Geophysical journal international, 2015, v. 203, no. 2, p. 896-900 How to cite?
Journal: Geophysical journal international 
Abstract: We map the complete surface deformation of 2015 M-w 7.8 Gorkha Nepal earthquake and its M-w 7.3 aftershock with two parallel ALOS2 descending ScanSAR paths' and two ascending Stripmap paths' images. The coseismic fault-slip model from a combined inversion of InSAR and GPS data reveals that this event is a reverse fault motion, with a slight right-lateral strike-slip component. The maximum thrust-slip and right-lateral strike-slip values are 5.7 and 1.2 m, respectively, located at a depth of 7-15 km, southeast to the epicentre. The total seismic moment 7.55 x 10(20) Nm, corresponding to a moment magnitude M-w 7.89, is similar to the seismological estimates. Fault slips of both the main shock and the largest aftershock are absent from the upper thrust shallower than 7 km, indicating that there is a locking lower edge of Himalayan Main Frontal Thrust and future seismic disaster is not unexpected in this area. We also find that the energy released in this earthquake is much less than the accumulated moment deficit over the past seven centuries estimated in previous studies, so the region surrounding Kathmandu is still under the threaten of seismic hazards.
URI: http://hdl.handle.net/10397/62476
ISSN: 0956-540X (print)
1365-246X (online)
DOI: 10.1093/gji/ggv335
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

WEB OF SCIENCETM
Citations

27
Last Week
0
Last month
Citations as of Aug 21, 2017

Page view(s)

37
Last Week
1
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.