scholarly journals ON AN EARTHQUAKE SOURCE MODEL OF INHOMOGENEOUS FAULTING AND ITS APPLICATIONS TOEARTHQUAKE ENGINEERING

1981 ◽  
Author(s):  
ΑΠΟΣΤΟΛΟΣ ΠΑΠΑΓΕΩΡΓΙΟΥ
Keyword(s):  
Source Model ◽  
Earthquake Source ◽  
Earthquake Source Model

scholarly journals The 2018 MS 5.9 Mojiang Earthquake: Source model and intensity based on near-field seismic recordings

2019 ◽  
Vol 3 (3) ◽  
pp. 268-281
Author(s):  
Xu Zhang ◽  
◽  
Zhen Fu ◽  
LiSheng Xu ◽  
ChunLai Li ◽  
...  
Keyword(s):  
Near Field ◽  
Source Model ◽  
Earthquake Source ◽  
Earthquake Source Model

scholarly journals Is Mode III Earthquake Source Model Unstable?

2002 ◽  
Vol 2002.40 (0) ◽  
pp. 113-114
Author(s):  
Tomohiko KOIZUMI ◽  
Masaaki WATANABE
Keyword(s):  
Source Model ◽  
Earthquake Source ◽  
Mode Iii ◽  
Earthquake Source Model

GENERATION OF SYNTHETIC ACCELEROGRAMS USING ENGINEERING EARTHQUAKE SOURCE MODEL

2004 ◽  
Vol 04 (04) ◽  
pp. 497-514 ◽  
Author(s):  
SHAILESH KR. AGRAWAL
Keyword(s):  
Elastic Medium ◽  
Mean Squared Error ◽  
Strong Motion ◽  
Source Model ◽  
Earthquake Source ◽  
Acceleration Time ◽  
The Earth ◽  
Acceleration Time Histories ◽  
Earthquake Source Model ◽  
Time Histories

The strong motion records available during an earthquake can be treated as the response of the earth as a structural system to unknown forces acting at unknown locations. Thus, if the part of the earth participating in ground motion is modeled as a known finite elastic medium, one can model the source location and forces generated during the earthquake as an inverse problem. Based on this analogy, a simple model for the earthquake source is proposed, by assuming the source to be a sequence of impulses acting at locations yet to be found. These impulses and their locations are found using the normal mode expansion along with a minimization of mean squared error. The medium is assumed to be finite, elastic, homogeneous, layered and horizontal with specified boundary conditions. Detailed results are obtained for the Uttarkashi earthquake of 20th October 1991, in India. The impulse locations are shown to be closely associated with the underlying fault mechanism. The proposed model is then used to simulate the acceleration time histories at a few recording stations. The earthquake source expressed in terms of a sequence of impulses acting at different locations is applied to a 2D finite elastic medium. The acceleration time histories found from this model agree well with with the accelerations recorded for the earthquake.

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