Ground motion processing and observations for the near-field accelerograms from the 2015 Gorkha, Nepal earthquake

2018 ◽  
Vol 107 ◽  
pp. 250-263 ◽  
Author(s):  
Reeves Whitney
Keyword(s):  
Ground Motion ◽  
Near Field ◽  
Motion Processing ◽  
Nepal Earthquake ◽  
2015 Gorkha Nepal Earthquake

scholarly journals Strong ground motion in the Kathmandu Valley during the 2015 Gorkha, Nepal, earthquake

2016 ◽  
Vol 68 (1) ◽  
Author(s):  
Nobuo Takai ◽  
Michiko Shigefuji ◽  
Sudhir Rajaure ◽  
Subeg Bijukchhen ◽  
Masayoshi Ichiyanagi ◽  
...  
Keyword(s):  
Ground Motion ◽  
Strong Ground Motion ◽  
Kathmandu Valley ◽  
Nepal Earthquake ◽  
2015 Gorkha Nepal Earthquake ◽  
Strong Ground

scholarly journals Joint inversion of teleseismic, geodetic, and near-field waveform datasets for rupture process of the 2015 Gorkha, Nepal, earthquake

2016 ◽  
Vol 68 (1) ◽  
Author(s):  
Hiroaki Kobayashi ◽  
Kazuki Koketsu ◽  
Hiroe Miyake ◽  
Nobuo Takai ◽  
Michiko Shigefuji ◽  
...  
Keyword(s):  
Joint Inversion ◽  
Near Field ◽  
Rupture Process ◽  
Nepal Earthquake ◽  
2015 Gorkha Nepal Earthquake

scholarly journals Author Correction: Widespread ground motion distribution caused by rupture directivity during the 2015 Gorkha, Nepal earthquake

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Kazuki Koketsu ◽  
Hiroe Miyake ◽  
Yujia Guo ◽  
Hiroaki Kobayashi ◽  
Tetsu Masuda ◽  
...  
Keyword(s):  
Ground Motion ◽  
Rupture Directivity ◽  
Nepal Earthquake ◽  
2015 Gorkha Nepal Earthquake

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

scholarly journals Widespread ground motion distribution caused by rupture directivity during the 2015 Gorkha, Nepal earthquake

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Kazuki Koketsu ◽  
Hiroe Miyake ◽  
Yujia Guo ◽  
Hiroaki Kobayashi ◽  
Tetsu Masuda ◽  
...  
Keyword(s):  
Ground Motion ◽  
Rupture Directivity ◽  
Source Inversion ◽  
Mount Everest ◽  
Nepal Earthquake ◽  
Strike Direction ◽  
Indian Lithosphere ◽  
Dip Angle ◽  
A Site ◽  
2015 Gorkha Nepal Earthquake

Abstract The ground motion and damage caused by the 2015 Gorkha, Nepal earthquake can be characterized by their widespread distributions to the east. Evidence from strong ground motions, regional acceleration duration, and teleseismic waveforms indicate that rupture directivity contributed significantly to these distributions. This phenomenon has been thought to occur only if a strike-slip or dip-slip rupture propagates to a site in the along-strike or updip direction, respectively. However, even though the earthquake was a dip-slip faulting event and its source fault strike was nearly eastward, evidence for rupture directivity is found in the eastward direction. Here, we explore the reasons for this apparent inconsistency by performing a joint source inversion of seismic and geodetic datasets, and conducting ground motion simulations. The results indicate that the earthquake occurred on the underthrusting Indian lithosphere, with a low dip angle, and that the fault rupture propagated in the along-strike direction at a velocity just slightly below the S-wave velocity. This low dip angle and fast rupture velocity produced rupture directivity in the along-strike direction, which caused widespread ground motion distribution and significant damage extending far eastwards, from central Nepal to Mount Everest.

Sign in / Sign up

Export Citation Format

Share Document