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Volume 93, Number 1
January 2022
Issue Cover
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?”
David N. Lumsden; Randel T. Cox
View articletitled, An Ongoing 13.5 Yr Hiatus in <strong>M</strong> ≥4 New Madrid/Wabash Valley Earthquakes: Could People Be the Cause of the “Pause?”
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In Memoriam

Remembering Clarence Allen (1925–2021)
Adrianne Ford
View articletitled, Remembering Clarence Allen (1925–2021)
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Articles

Fault Geometry and Slip Distribution of the 2021 Mw 7.4 Maduo, China, Earthquake Inferred from InSAR Measurements and Relocated Aftershocks
Kefeng He; Yangmao Wen; Caijun Xu; Yingwen Zhao
View articletitled, Fault Geometry and Slip Distribution of the 2021 <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><msub xmlns=""><mi>M</mi><mi mathvariant="normal">w</mi></msub></math></span> 7.4 Maduo, China, Earthquake Inferred from InSAR Measurements and Relocated Aftershocks
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Short‐Term Foreshock and Aftershock Patterns of the 2021 Ms 6.4 Yangbi Earthquake Sequence
Yingying Zhang; Yanru An; Feng Long; Gaohua Zhu; Min Qin; Yusheng Zhong; Qin Xu; Hongfeng Yang
View articletitled, Short‐Term Foreshock and Aftershock Patterns of the 2021 <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><msub xmlns=""><mi>M</mi><mi mathvariant="normal">s</mi></msub></math></span> 6.4 Yangbi Earthquake Sequence
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Seismic Location of the 4 August 2020 Beirut Port Chemical Explosion
Hafidh A. A. Ghalib; Gordon Kraft; Abdulmutaleb Alchalbi; Robert Wagner
View articletitled, Seismic Location of the 4 August 2020 Beirut Port Chemical Explosion
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The July 2020 Mw 6.3 Nima Earthquake, Central Tibet: A Shallow Normal‐Faulting Event Rupturing in a Stepover Zone
Jiuyuan Yang; Caijun Xu; Yangmao Wen; Guangyu Xu
View articletitled, The July 2020 <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><msub xmlns=""><mi>M</mi><mi mathvariant="normal">w</mi></msub></math></span> 6.3 Nima Earthquake, Central Tibet: A Shallow Normal‐Faulting Event Rupturing in a Stepover Zone
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Rapid Earthquake Source Description Using Variometric‐Derived GPS Displacements toward Application to the 2019 Mw 7.1 Ridgecrest Earthquake
Jianfei Zang; Caijun Xu; Yangmao Wen; Xiaohang Wang; Kefeng He
View articletitled, Rapid Earthquake Source Description Using Variometric‐Derived GPS Displacements toward Application to the 2019 <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><msub xmlns=""><mi>M</mi><mi mathvariant="normal">w</mi></msub></math></span> 7.1 Ridgecrest Earthquake
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The Seismogenic Structure of the 2017 Mw 6.9 Milin, Tibet, Earthquake: A Possible Newly Active Fault at the Eastern Himalayan Syntaxis
Chao Xie; Bengang Zhou; Ping Wang; Zhengfang Li; Tai Liu; Wei Pang; Zhongquan Cao
View articletitled, The Seismogenic Structure of the 2017 <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><msub xmlns=""><mi>M</mi><mi mathvariant="normal">w</mi></msub></math></span> 6.9 Milin, Tibet, Earthquake: A Possible Newly Active Fault at the Eastern Himalayan Syntaxis
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Simulation of Pulse‐Like Ground Motions during the 2015 Mw 8.3 Illapel Earthquake with a New Source Model Using Corrected Empirical Green’s Functions
Claudio Fernández; Atsushi Nozu; Jorge G. F. Crempien; Juan Carlos de la Llera
View articletitled, Simulation of Pulse‐Like Ground Motions during the 2015 <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><msub xmlns=""><mi>M</mi><mi mathvariant="normal">w</mi></msub></math></span> 8.3 Illapel Earthquake with a New Source Model Using Corrected Empirical Green’s Functions
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Unexpected Directionality of Failures in the 1906 San Francisco Earthquake near Point Reyes Station
Richard Brune; John G. Anderson; James N. Brune
View articletitled, Unexpected Directionality of Failures in the 1906 San Francisco Earthquake near Point Reyes Station
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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
View articletitled, Reproducing the Spatial Characteristics of High‐Frequency Ground Motions for the 1850 <strong>M</strong> 7.5 Xichang Earthquake
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Poisson Behavior Leads to Bias When Testing for Periodicity in the Paleoseismic Record of Large Earthquakes
Randolph T. Williams
View articletitled, Poisson Behavior Leads to Bias When Testing for Periodicity in the Paleoseismic Record of Large Earthquakes
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Magnitude Estimation for Earthquake Early Warning with Multiple Parameter Inputs and a Support Vector Machine
Jingbao Zhu; Shanyou Li; Jindong Song
View articletitled, Magnitude Estimation for Earthquake Early Warning with Multiple Parameter Inputs and a Support Vector Machine
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“Shaking in 5 Seconds!”—Performance and User Appreciation Assessment of the Earthquake Network Smartphone‐Based Public Earthquake Early Warning System
Rémy Bossu; Francesco Finazzi; Robert Steed; Laure Fallou; István Bondár
View articletitled, “Shaking in 5 Seconds!”—Performance and User Appreciation Assessment of the Earthquake Network Smartphone‐Based Public Earthquake Early Warning System
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Modeling Seismic Network Detection Thresholds Using Production Picking Algorithms
David C. Wilson; Emily Wolin; William L. Yeck; Robert E. Anthony; Adam T. Ringler
View articletitled, Modeling Seismic Network Detection Thresholds Using Production Picking Algorithms
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An Evaluation of the Timing Accuracy of Global and Regional Seismic Stations and Networks
Yi Yang; Xiaodong Song; Adam T. Ringler
View articletitled, An Evaluation of the Timing Accuracy of Global and Regional Seismic Stations and Networks
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Rotational Seismology with a Quartz Rotation Sensor
Krishna Venkateswara; Jerome Paros; Paul Bodin; William Wilcock; Harold J. Tobin
View articletitled, Rotational Seismology with a Quartz Rotation Sensor
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Urban Running Activity Detected Using a Seismic Sensor during COVID‐19 Pandemic
Yumin Zhao; Yunyue Elita Li; Enhedelihai Nilot; Gang Fang
View articletitled, Urban Running Activity Detected Using a Seismic Sensor during COVID‐19 Pandemic
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Revisiting the Fault Locking of the Central Himalayan Thrust with a Viscoelastic Earthquake‐Cycle Deformation Model
Faqi Diao; Rongjiang Wang; Yage Zhu; Xiong Xiong
View articletitled, Revisiting the Fault Locking of the Central Himalayan Thrust with a Viscoelastic Earthquake‐Cycle Deformation Model
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USTClitho2.0: Updated Unified Seismic Tomography Models for Continental China Lithosphere from Joint Inversion of Body‐Wave Arrival Times and Surface‐Wave Dispersion Data
Shoucheng Han; Haijiang Zhang; Hailiang Xin; Weisen Shen; Huajian Yao
View articletitled, USTClitho2.0: Updated Unified Seismic Tomography Models for Continental China Lithosphere from Joint Inversion of Body‐Wave Arrival Times and Surface‐Wave Dispersion Data
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New Magnitude Proxy for Earthquake Early Warning Based on Initial Time Series and Frequency
Yanwei Wang; Xiaojun Li; Li Li; Zifa Wang; Jingyan Lan
View articletitled, New Magnitude Proxy for Earthquake Early Warning Based on Initial Time Series and Frequency
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A Data‐Driven Framework for Automated Detection of Aircraft‐Generated Signals in Seismic Array Data Using Machine Learning
Xinxiang Zhang; Stephen Arrowsmith; Sotirios Tsongas; Chris Hayward; Haoran Meng; Yehuda Ben‐Zion
View articletitled, A Data‐Driven Framework for Automated Detection of Aircraft‐Generated Signals in Seismic Array Data Using Machine Learning
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Introducing ISMDq—A Web Portal for Real‐Time Quality Monitoring of Italian Strong‐Motion Data
Marco Massa; Davide Scafidi; Claudia Mascandola; Alessio Lorenzetti
View articletitled, Introducing <em>ISMDq</em>—A Web Portal for Real‐Time Quality Monitoring of Italian Strong‐Motion Data
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Characteristics of Low‐Frequency Horizontal Noise of Ocean‐Bottom Seismic Data
Chao An; Chen Cai; Lei Zhou; Ting Yang
View articletitled, Characteristics of Low‐Frequency Horizontal Noise of Ocean‐Bottom Seismic Data
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Statistical Correlation of Seismicity and Geodetic Strain Rate in the Chinese Mainland
Yanqiang Wu; Zaisen Jiang; Yajin Pang; Changyun Chen
View articletitled, Statistical Correlation of Seismicity and Geodetic Strain Rate in the Chinese Mainland
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Effect of Fixing Earthquake Depth in ShakeAlert Algorithms on Performance for Intraslab Earthquakes
Mika Thompson; J. Renate Hartog; Erin A. Wirth
View articletitled, Effect of Fixing Earthquake Depth in ShakeAlert Algorithms on Performance for Intraslab Earthquakes
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Imaging the Ice Sheet and Uppermost Crustal Structures with a Dense Linear Seismic Array in the Larsemann Hills, Prydz Bay, East Antarctica
Lei Fu; Jingxue Guo; Junlun Li; Bao Deng; Guofeng Liu; Enzhao Xiao; Xiaofei Chen
View articletitled, Imaging the Ice Sheet and Uppermost Crustal Structures with a Dense Linear Seismic Array in the Larsemann Hills, Prydz Bay, East Antarctica
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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...
Max Suter
View articletitled, 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...
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Normal Modes of a Medieval Tower Excited by Ambient Vibrations in an Urban Environment
Andrea Morelli; Lucia Zaccarelli; Adriano Cavaliere; Riccardo M. Azzara
View articletitled, Normal Modes of a Medieval Tower Excited by Ambient Vibrations in an Urban Environment
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Analysis of the Reoccurrence Patterns of Earthquakes in the Sichuan–Yunnan Area (Southeastern Tibetan Plateau), Southwest China
Jingwei Liu; Yi Du; Zhenjie Jing; Xuemeng Huang; Furen Xie
View articletitled, Analysis of the Reoccurrence Patterns of Earthquakes in the Sichuan–Yunnan Area (Southeastern Tibetan Plateau), Southwest China
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High‐Resolution Crustal Shear‐Wave Velocity Structure in the Pearl River Delta, South China
Zuoyong Lü; Haibo Huang; Xiuwei Ye; Jinshui Lü; Cheng Xiong
View articletitled, High‐Resolution Crustal Shear‐Wave Velocity Structure in the Pearl River Delta, South China
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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
View articletitled, Noise Levels and Signals Observed on Submarine Fibers in the Canary Islands Using DAS
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A Retrospective Analysis of b‐Value Changes Preceding Strong Earthquakes
Nicolas D. DeSalvio; Maxwell L. Rudolph
View articletitled, A Retrospective Analysis of <em>b</em>‐Value Changes Preceding Strong Earthquakes
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Observations of PKKPab Diffraction Waves Well Beyond Cutoff Distance
Yulin Chen; Sidao Ni; Baolong Zhang
View articletitled, Observations of <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><mi xmlns="">P</mi><mi xmlns="">K</mi><mi xmlns="">K</mi><msub xmlns=""><mi>P</mi><mrow><mi>a</mi><mi>b</mi></mrow></msub></math></span> Diffraction Waves Well Beyond Cutoff Distance
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Perspectives on Clustering and Declustering of Earthquakes
Ilya Zaliapin; Yehuda Ben‐Zion
View articletitled, Perspectives on Clustering and Declustering of Earthquakes
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Eastern Section

The 6 May 1947 Milwaukee, Wisconsin, Earthquake
Susan E. Hough
View articletitled, The 6 May 1947 Milwaukee, Wisconsin, Earthquake
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Electronic Seismologist

An Earthquake Detection and Location Architecture for Continuous Seismograms: Phase Picking, Association, Location, and Matched Filter (PALM)
Yijian Zhou; Han Yue; Lihua Fang; Shiyong Zhou; Li Zhao; Abhijit Ghosh
View articletitled, An Earthquake Detection and Location Architecture for Continuous Seismograms: Phase Picking, Association, Location, and Matched Filter (PALM)
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MsPASS: A Data Management and Processing Framework for Seismology
Yinzhi Wang; Gary L. Pavlis; Weiming Yang; Jinxin Ma
View articletitled, MsPASS: A Data Management and Processing Framework for Seismology
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Fast Identification of Volcanic Tremor and Lahar Signals during the 2009 Redoubt Eruption Using Permutation Entropy and Supervised Machine Learning
Kostas I. Konstantinou; Diah Ayu Rahmalia; Izaina Nurfitriana; Mie Ichihara
View articletitled, Fast Identification of Volcanic Tremor and Lahar Signals during the 2009 Redoubt Eruption Using Permutation Entropy and Supervised Machine Learning
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Historical Seismologist

The 373 B.C. Helike (Gulf of Corinth, Greece) Earthquake and Tsunami, Revisited
Stathis C. Stiros
View articletitled, The 373 B.C. Helike (Gulf of Corinth, Greece) Earthquake and Tsunami, Revisited
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An Unknown Letter of Charles F. Richter about Magnitude Scales and His Relationship to Beno Gutenberg
Johannes Schweitzer
View articletitled, An Unknown Letter of Charles F. Richter about Magnitude Scales and His Relationship to Beno Gutenberg
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In 1909 in Italy, a Franciscan Monk Was the First to Discover Electromagnetic Seismic Precursors
Adriano Nardi; Antonio Piersanti; Gabriele Ferrara
View articletitled, In 1909 in Italy, a Franciscan Monk Was the First to Discover Electromagnetic Seismic Precursors
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EduQuakes

Google Street View as a Teaching Tool for Assessing Earthquake Building Damage
William Davis
View articletitled, Google Street View as a Teaching Tool for Assessing Earthquake Building Damage
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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
View articletitled, The Pacific OBS Research into Convecting Asthenosphere (ORCA) Experiment
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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
View articletitled, Near‐Field High‐Resolution Maps of the Ridgecrest Earthquakes from Aerial Imagery
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Comments and Replies

Comment on “Which Earthquake Accounts Matter?” by Susan E. Hough and Stacey S. Martin
David J. Wald
View articletitled, Comment on “Which Earthquake Accounts Matter?” by Susan E. Hough and Stacey S. Martin
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Reply to “Comment on ‘Which Earthquake Accounts Matter?’ by Susan E. Hough and Stacey S. Martin” by David J. Wald
Susan E. Hough; Stacey S. Martin
View articletitled, Reply to “Comment on ‘Which Earthquake Accounts Matter?’ by Susan E. Hough and Stacey S. Martin” by David J. Wald
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SSA News and Notes

SSA News and Notes
View articletitled, SSA News and Notes
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  • Cover Image

    Cover Image

    issue cover

    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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  • Online ISSN 1938-2057
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