scholarly journals The Crustal Stress Field Inferred from Focal Mechanisms in Northern Chile

2021 ◽  
Author(s):  
Carlos Herrera ◽  
John F. Cassidy ◽  
Stan E. Dosso ◽  
Jan Dettmer ◽  
Wasja Bloch ◽  
...  
Keyword(s):  
Stress Field ◽  
Focal Mechanisms ◽  
Northern Chile ◽  
Crustal Stress ◽  
Crustal Stress Field

scholarly journals The Crustal Stress Field of Northern Chile

2021 ◽  
Author(s):  
Carlos Herrera ◽  
John F Cassidy ◽  
Stan E Dosso ◽  
Jan Dettmer ◽  
Wasja Bloch ◽  
...  
Keyword(s):  
Stress Field ◽  
Northern Chile ◽  
Crustal Stress ◽  
Crustal Stress Field

scholarly journals Present‐day crustal stress field in Greece inferred from regional‐scale damped inversion of earthquake focal mechanisms

2017 ◽  
Vol 122 (1) ◽  
pp. 506-523 ◽  
Author(s):  
K. I. Konstantinou ◽  
V. Mouslopoulou ◽  
W.‐T. Liang ◽  
O. Heidbach ◽  
O. Oncken ◽  
...  
Keyword(s):  
Stress Field ◽  
Regional Scale ◽  
Focal Mechanisms ◽  
Crustal Stress ◽  
Earthquake Focal Mechanisms ◽  
Crustal Stress Field

scholarly journals Focal mechanisms of small earthquakes beneath the Japanese islands based on first-motion polarities picked using deep learning

2020 ◽  
Vol 223 (3) ◽  
pp. 1658-1671
Author(s):  
Takahiko Uchide
Keyword(s):  
Neural Network ◽  
Stress Field ◽  
Focal Mechanisms ◽  
Data Set ◽  
Crustal Stress ◽  
Focal Mechanism Solutions ◽  
First Motion ◽  
Earthquake Generation ◽  
Japanese Islands ◽  
Crustal Stress Field

SUMMARY Knowledge of crustal stress fields is essential for understanding tectonics and earthquake generation. One approach for estimating the crustal stress field is based on the focal mechanisms of earthquakes. This study investigated the focal mechanisms of approximately 110 000 microearthquakes in the area of the Japanese islands that occurred at a depth shallower than 20 km, based on the first-motion polarities picked by a simple neural network model. The model was first trained using a data set of mainly moderate to large earthquakes throughout Japan. Following on, the model was re-trained using a data set of microearthquakes in two regions of Japan. The threshold of the confidence score from the neural network model was chosen to maximize the overall quality of the focal mechanism solutions. The P- and T-axes of the numerous focal mechanism solutions provided more detailed distributions of the crustal stress field. For example, in the Chugoku region, small differences were observed in the trend of P-axes azimuths between the northern and southern areas, spatially corresponding to geodetic observations. The results of this study are useful for revealing the crustal stress field, and, as such, for assessing past and current tectonic activities and potential future earthquake generation.

Shear Wave Splitting and the Features of the Crustal Stress Field in the Capital Circle

2006 ◽  
Vol 49 (1) ◽  
pp. 157-166 ◽  
Author(s):  
Yuan-Gen LAI ◽  
Qi-Yuan LIU ◽  
Jiu-Hui CHEN ◽  
Jie LIU ◽  
Shun-Cheng LI ◽  
...  
Keyword(s):  
Stress Field ◽  
Shear Wave ◽  
Shear Wave Splitting ◽  
Crustal Stress ◽  
Wave Splitting ◽  
Crustal Stress Field

scholarly journals Spatial variation of the crustal stress field along the Ryukyu-Taiwan-Luzon convergent boundary

2010 ◽  
Vol 115 (B11) ◽  
Author(s):  
Wen-Nan Wu ◽  
Honn Kao ◽  
Shu-Kun Hsu ◽  
Chung-Liang Lo ◽  
How-Wei Chen
Keyword(s):  
Stress Field ◽  
Spatial Variation ◽  
Crustal Stress ◽  
Crustal Stress Field
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