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Issues
Volume 93, Number 1
January 2022
ISSN 0895-0695
EISSN 1938-2057
Opinion
An Ongoing 13.5 Yr Hiatus in M ≥4 New Madrid/Wabash Valley Earthquakes: Could People Be the Cause of the “Pause?”
Seismological Research Letters November 10, 2021, Vol.93, 1-4. doi:https://doi.org/10.1785/0220210236
In Memoriam
Remembering Clarence Allen (1925–2021)
Seismological Research Letters November 24, 2021, Vol.93, 5-7. doi:https://doi.org/10.1785/0220210312
Articles
Fault Geometry and Slip Distribution of the 2021 7.4 Maduo, China, Earthquake Inferred from InSAR Measurements and Relocated Aftershocks
Seismological Research Letters October 13, 2021, Vol.93, 8-20. doi:https://doi.org/10.1785/0220210204
Short‐Term Foreshock and Aftershock Patterns of the 2021 6.4 Yangbi Earthquake Sequence
Seismological Research Letters November 03, 2021, Vol.93, 21-32. doi:https://doi.org/10.1785/0220210154
Seismic Location of the 4 August 2020 Beirut Port Chemical Explosion
Seismological Research Letters October 13, 2021, Vol.93, 33-44. doi:https://doi.org/10.1785/0220210123
The July 2020 6.3 Nima Earthquake, Central Tibet: A Shallow Normal‐Faulting Event Rupturing in a Stepover Zone
Seismological Research Letters November 03, 2021, Vol.93, 45-55. doi:https://doi.org/10.1785/0220210057
Rapid Earthquake Source Description Using Variometric‐Derived GPS Displacements toward Application to the 2019 7.1 Ridgecrest Earthquake
Seismological Research Letters October 20, 2021, Vol.93, 56-67. doi:https://doi.org/10.1785/0220210129
The Seismogenic Structure of the 2017 6.9 Milin, Tibet, Earthquake: A Possible Newly Active Fault at the Eastern Himalayan Syntaxis
Seismological Research Letters October 06, 2021, Vol.93, 68-75. doi:https://doi.org/10.1785/0220210165
Simulation of Pulse‐Like Ground Motions during the 2015 8.3 Illapel Earthquake with a New Source Model Using Corrected Empirical Green’s Functions
Seismological Research Letters September 22, 2021, Vol.93, 76-90. doi:https://doi.org/10.1785/0220200446
Unexpected Directionality of Failures in the 1906 San Francisco Earthquake near Point Reyes Station
Seismological Research Letters November 03, 2021, Vol.93, 91-99. doi:https://doi.org/10.1785/0220210062
Reproducing the Spatial Characteristics of High‐Frequency Ground Motions for the 1850 M 7.5 Xichang Earthquake
Zongchao Li; Jize Sun; Lihua Fang; Xueliang Chen; Mengtan Gao; Quanbo Luo; Guochen Wang; Qingfeng Ding; Jian Ma; Qi Li
Seismological Research Letters October 13, 2021, Vol.93, 100-117. doi:https://doi.org/10.1785/0220210076
Poisson Behavior Leads to Bias When Testing for Periodicity in the Paleoseismic Record of Large Earthquakes
Seismological Research Letters November 03, 2021, Vol.93, 118-125. doi:https://doi.org/10.1785/0220210143
Magnitude Estimation for Earthquake Early Warning with Multiple Parameter Inputs and a Support Vector Machine
Seismological Research Letters September 15, 2021, Vol.93, 126-136. doi:https://doi.org/10.1785/0220210144
“Shaking in 5 Seconds!”—Performance and User Appreciation Assessment of the Earthquake Network Smartphone‐Based Public Earthquake Early Warning System
Seismological Research Letters September 29, 2021, Vol.93, 137-148. doi:https://doi.org/10.1785/0220210180
Modeling Seismic Network Detection Thresholds Using Production Picking Algorithms
Seismological Research Letters October 20, 2021, Vol.93, 149-160. doi:https://doi.org/10.1785/0220210192
An Evaluation of the Timing Accuracy of Global and Regional Seismic Stations and Networks
Seismological Research Letters November 10, 2021, Vol.93, 161-172. doi:https://doi.org/10.1785/0220210232
Rotational Seismology with a Quartz Rotation Sensor
Seismological Research Letters September 22, 2021, Vol.93, 173-180. doi:https://doi.org/10.1785/0220210171
Urban Running Activity Detected Using a Seismic Sensor during COVID‐19 Pandemic
Seismological Research Letters September 29, 2021, Vol.93, 181-192. doi:https://doi.org/10.1785/0220210147
Revisiting the Fault Locking of the Central Himalayan Thrust with a Viscoelastic Earthquake‐Cycle Deformation Model
Seismological Research Letters October 27, 2021, Vol.93, 193-200. doi:https://doi.org/10.1785/0220200310
USTClitho2.0: Updated Unified Seismic Tomography Models for Continental China Lithosphere from Joint Inversion of Body‐Wave Arrival Times and Surface‐Wave Dispersion Data
Seismological Research Letters September 08, 2021, Vol.93, 201-215. doi:https://doi.org/10.1785/0220210122
New Magnitude Proxy for Earthquake Early Warning Based on Initial Time Series and Frequency
Seismological Research Letters November 10, 2021, Vol.93, 216-225. doi:https://doi.org/10.1785/0220210106
A Data‐Driven Framework for Automated Detection of Aircraft‐Generated Signals in Seismic Array Data Using Machine Learning
Seismological Research Letters November 03, 2021, Vol.93, 226-240. doi:https://doi.org/10.1785/0220210198
Introducing ISMDq—A Web Portal for Real‐Time Quality Monitoring of Italian Strong‐Motion Data
Seismological Research Letters November 10, 2021, Vol.93, 241-256. doi:https://doi.org/10.1785/0220210178
Characteristics of Low‐Frequency Horizontal Noise of Ocean‐Bottom Seismic Data
Seismological Research Letters September 01, 2021, Vol.93, 257-267. doi:https://doi.org/10.1785/0220200349
Statistical Correlation of Seismicity and Geodetic Strain Rate in the Chinese Mainland
Seismological Research Letters August 18, 2021, Vol.93, 268-276. doi:https://doi.org/10.1785/0220200048
Effect of Fixing Earthquake Depth in ShakeAlert Algorithms on Performance for Intraslab Earthquakes
Seismological Research Letters September 08, 2021, Vol.93, 277-287. doi:https://doi.org/10.1785/0220210056
Imaging the Ice Sheet and Uppermost Crustal Structures with a Dense Linear Seismic Array in the Larsemann Hills, Prydz Bay, East Antarctica
Seismological Research Letters September 15, 2021, Vol.93, 288-295. doi:https://doi.org/10.1785/0220210135
The Historical Seismicity of the Puebla‐Tlaxcala Region (Trans‐Mexican Volcanic Belt) during Early Novohispanic Times (A.D. 1542–1740) and the Structure of the Tlaxcala‐Huamantla Half‐Gra...
Seismological Research Letters September 29, 2021, Vol.93, 296-314. doi:https://doi.org/10.1785/0220210200
Normal Modes of a Medieval Tower Excited by Ambient Vibrations in an Urban Environment
Seismological Research Letters October 13, 2021, Vol.93, 315-327. doi:https://doi.org/10.1785/0220210038
Analysis of the Reoccurrence Patterns of Earthquakes in the Sichuan–Yunnan Area (Southeastern Tibetan Plateau), Southwest China
Seismological Research Letters August 25, 2021, Vol.93, 328-337. doi:https://doi.org/10.1785/0220210093
High‐Resolution Crustal Shear‐Wave Velocity Structure in the Pearl River Delta, South China
Seismological Research Letters September 15, 2021, Vol.93, 338-350. doi:https://doi.org/10.1785/0220210116
Noise Levels and Signals Observed on Submarine Fibers in the Canary Islands Using DAS
Arantza Ugalde; Carlos Becerril; Antonio Villaseñor; César R. Ranero; María R. Fernández‐Ruiz; Sonia Martin‐Lopez; Miguel González‐Herráez; Hugo F. Martins
Seismological Research Letters September 22, 2021, Vol.93, 351-363. doi:https://doi.org/10.1785/0220210049
A Retrospective Analysis of b‐Value Changes Preceding Strong Earthquakes
Seismological Research Letters October 06, 2021, Vol.93, 364-375. doi:https://doi.org/10.1785/0220210149
Observations of Diffraction Waves Well Beyond Cutoff Distance
Seismological Research Letters September 22, 2021, Vol.93, 376-385. doi:https://doi.org/10.1785/0220210023
Perspectives on Clustering and Declustering of Earthquakes
Seismological Research Letters September 22, 2021, Vol.93, 386-401. doi:https://doi.org/10.1785/0220210127
Eastern Section
The 6 May 1947 Milwaukee, Wisconsin, Earthquake
Seismological Research Letters September 15, 2021, Vol.93, 402-412. doi:https://doi.org/10.1785/0220210150
Electronic Seismologist
An Earthquake Detection and Location Architecture for Continuous Seismograms: Phase Picking, Association, Location, and Matched Filter (PALM)
Seismological Research Letters September 01, 2021, Vol.93, 413-425. doi:https://doi.org/10.1785/0220210111
MsPASS: A Data Management and Processing Framework for Seismology
Seismological Research Letters September 15, 2021, Vol.93, 426-434. doi:https://doi.org/10.1785/0220210182
Fast Identification of Volcanic Tremor and Lahar Signals during the 2009 Redoubt Eruption Using Permutation Entropy and Supervised Machine Learning
Seismological Research Letters November 17, 2021, Vol.93, 435-443. doi:https://doi.org/10.1785/0220210176
Historical Seismologist
The 373 B.C. Helike (Gulf of Corinth, Greece) Earthquake and Tsunami, Revisited
Seismological Research Letters September 22, 2021, Vol.93, 444-457. doi:https://doi.org/10.1785/0220210092
An Unknown Letter of Charles F. Richter about Magnitude Scales and His Relationship to Beno Gutenberg
Seismological Research Letters September 22, 2021, Vol.93, 458-464. doi:https://doi.org/10.1785/0220210212
In 1909 in Italy, a Franciscan Monk Was the First to Discover Electromagnetic Seismic Precursors
Seismological Research Letters October 06, 2021, Vol.93, 465-473. doi:https://doi.org/10.1785/0220210020
EduQuakes
Google Street View as a Teaching Tool for Assessing Earthquake Building Damage
Seismological Research Letters November 03, 2021, Vol.93, 474-476. doi:https://doi.org/10.1785/0220210148
Data Mine
The Pacific OBS Research into Convecting Asthenosphere (ORCA) Experiment
Zachary C. Eilon; James B. Gaherty; Lun Zhang; Joshua Russell; Sean McPeak; Joseph Phillips; Donald W. Forsyth; Göran Ekström
Seismological Research Letters October 20, 2021, Vol.93, 477-493. doi:https://doi.org/10.1785/0220210173
Near‐Field High‐Resolution Maps of the Ridgecrest Earthquakes from Aerial Imagery
Alba M. Rodriguez Padilla; Mercedes A. Quintana; Ruth M. Prado; Brian J. Aguilar; Thomas A. Shea; Michael E. Oskin; Leslie Garcia
Seismological Research Letters October 27, 2021, Vol.93, 494-499. doi:https://doi.org/10.1785/0220210234
Comments and Replies
Comment on “Which Earthquake Accounts Matter?” by Susan E. Hough and Stacey S. Martin
Seismological Research Letters November 03, 2021, Vol.93, 500-505. doi:https://doi.org/10.1785/0220210072
Reply to “Comment on ‘Which Earthquake Accounts Matter?’ by Susan E. Hough and Stacey S. Martin” by David J. Wald
Seismological Research Letters November 03, 2021, Vol.93, 506-511. doi:https://doi.org/10.1785/0220210142
SSA News and Notes
SSA News and Notes
Seismological Research Letters December 01, 2021, Vol.93, 512. doi:https://doi.org/10.1785/0220210313
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Cover Image
Cover Image
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Lava from the ongoing eruption of the Cumbre Vieja volcano on the Canary Island’s La Palma Island covers and destroys everything in its path. This photo taken on 29 November 2021, shows damage in the town of La Laguna related to the opening of several new vents that have broadened the area of impact. Although not directly related to the current eruption, which began in September 2021, two papers in this issue of SRL touch on relevant topics. We draw your attention to a paper on using submarine DAS to monitor activity in the region of the Canary Islands (Ugalde et al.) and another on rapid identification of volcanic signals (Konstantinou et al.).
Image credit: Image credit: Emilio Morenatti/AP/Shutterstock
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