Preface to the Seismological Research Letters Data Mine Focus Section on the 2019 Ridgecrest Earthquake Sequence

2020 ◽  
Vol 91 (4) ◽  
pp. 1940-1942
Author(s):  
Taka’aki Taira ◽  
Allison Bent
Keyword(s):  
Earthquake Sequence ◽  
Data Mine

A high-resolution seismic catalog for the 2020 Magna, Utah, earthquake sequence

2020 ◽  
Author(s):  
Guanning Pang ◽  
Keith Koper ◽  
Maria Mesimeri ◽  
Kristine Pankow ◽  
Benjamin Baker ◽  
...  
Keyword(s):  
High Resolution ◽  
Earthquake Sequence ◽  
Seismic Catalog

EARTHQUAKE EARLY WARNING DURING THE 2019 RIDGECREST EARTHQUAKE SEQUENCE: WHAT HAPPENED AND WHAT’S NEXT?

2019 ◽  
Author(s):  
Elizabeth S. Cochran ◽  
◽  
Sarah E. Minson ◽  
Annemarie S. Baltay ◽  
Julian Bunn ◽  
...  
Keyword(s):  
Early Warning ◽  
Earthquake Early Warning ◽  
Earthquake Sequence

TIME SERIES DISPLACEMENT MAPS FOR THE 2019-2020 PUERTO RICO EARTHQUAKE SEQUENCE

2020 ◽  
Author(s):  
Zelalem Demissie ◽  
◽  
Daniel A. Laó-Dávila ◽  
Liang Xue ◽  
Glyn Rimmington ◽  
...  
Keyword(s):  
Time Series ◽  
Puerto Rico ◽  
Earthquake Sequence ◽  
Displacement Maps

Supplemental Material: Geophysical analysis of the 30 July 1972 Sitka, Alaska, earthquake sequence

2020 ◽  
Author(s):  
Juan A. Ochoa Chavez ◽  
Diane Doser
Keyword(s):  
Earthquake Sequence ◽  
Double Difference ◽  
Alaska Earthquake

Supplemental Material 1 contains relocated aftershocks of 30 July 1972 sequence. Supplemental Material 2 contains relocation parameters used in double-difference algorithm (HYPODD).<br>

scholarly journals Ground motions in urban Los Angeles from the 2019 Ridgecrest earthquake sequence

2021 ◽  
pp. 875529302110039
Author(s):  
Filippos Filippitzis ◽  
Monica D Kohler ◽  
Thomas H Heaton ◽  
Robert W Graves ◽  
Robert W Clayton ◽  
...  
Keyword(s):  
Los Angeles ◽  
Ground Motion ◽  
Ground Motions ◽  
Earthquake Sequence ◽  
Motion Prediction ◽  
Ground Motion Prediction Equations ◽  
Prediction Equations ◽  
Ground Motion Prediction ◽  
Velocity Models ◽  
Spectral Accelerations

We study ground-motion response in urban Los Angeles during the two largest events (M7.1 and M6.4) of the 2019 Ridgecrest earthquake sequence using recordings from multiple regional seismic networks as well as a subset of 350 stations from the much denser Community Seismic Network. In the first part of our study, we examine the observed response spectral (pseudo) accelerations for a selection of periods of engineering significance (1, 3, 6, and 8 s). Significant ground-motion amplification is present and reproducible between the two events. For the longer periods, coherent spectral acceleration patterns are visible throughout the Los Angeles Basin, while for the shorter periods, the motions are less spatially coherent. However, coherence is still observable at smaller length scales due to the high spatial density of the measurements. Examining possible correlations of the computed response spectral accelerations with basement depth and Vs30, we find the correlations to be stronger for the longer periods. In the second part of the study, we test the performance of two state-of-the-art methods for estimating ground motions for the largest event of the Ridgecrest earthquake sequence, namely three-dimensional (3D) finite-difference simulations and ground motion prediction equations. For the simulations, we are interested in the performance of the two Southern California Earthquake Center 3D community velocity models (CVM-S and CVM-H). For the ground motion prediction equations, we consider four of the 2014 Next Generation Attenuation-West2 Project equations. For some cases, the methods match the observations reasonably well; however, neither approach is able to reproduce the specific locations of the maximum response spectral accelerations or match the details of the observed amplification patterns.

Solving for Source Parameters Using Nested Array Data: A Case Study from the Canterbury, New Zealand Earthquake Sequence

2016 ◽  
Vol 174 (3) ◽  
pp. 875-893 ◽  
Author(s):  
Corrie Neighbors ◽  
E. S. Cochran ◽  
K. J. Ryan ◽  
A. E. Kaiser
Keyword(s):  
New Zealand ◽  
Source Parameters ◽  
Earthquake Sequence ◽  
Array Data
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