The 2015 Gorkha, Nepal earthquake (Mw 7.8) ruptured the Main Himalayan Thrust (MHT) and allows direct measurements of the behavior of the continental collision zone. We study the MHT using seismic waveforms recorded by local stations that completely cover the aftershock zone (Event catalog 1.docx and Event catalog 2.docx). We obtained the velocity structure beneath the study zone (Velocity.dat). The MHT exhibits clear lateral variation along geologic strike, with the Lesser Himalayan ramp having moderate dip on the MHT beneath the mainshock area and a flatter and deeper MHT beneath the eastern end of the aftershock zone. East of the aftershock zone, seismic wave speed increases at MHT depths, perhaps due to subduction of an Indian basement ridge. A similar magnitude wave speed change occurs at the western end of the aftershock zone. These gross morphological structures of the MHT controlled the rupture length of the Gorkha earthquake.

File naming and required software

File names: Event catalog 1.docx, Event catalog 2.docx; Data reading method: All files in this data set can be opened directly with word, the content is the 2015 Gurkha earthquake aftershock catalog in Nepal.
File name: Velocity.dat; Data reading method: The data file can be opened directly with a text program (such as Notepad). Except for the header file, the main content is velocity.

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Cite as:

(2020). Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal (2015-2016). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Disas.tpdc.270326. CSTR: 18406.11.Disas.tpdc.270326. (Download the reference： RIS | Bibtex )

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References literature

1.Bai, L., Klemperer, S. L., Mori, J., Karplus, M. S., Ding, L., Liu, H., Li, G., Song, B., Dhakall, S., (2019). Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal. Science Advances, 5, eaav0723. (View Details )

Support Program

Supported by the Strategic Priority Research Program of Chinese Academy of Sciences (No:XDA2006010201)

National Natural Science Foundation of China (No:41761144076)

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