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Issues
Volume 91, Number 4
July 2020
ISSN 0895-0695
EISSN 1938-2057
Opinion
Anecdotal Evidence Is An Insufficient Basis for Designing Earthquake Preparedness Campaigns
Seismological Research Letters May 20, 2020, Vol.91, 1929-1935. doi:https://doi.org/10.1785/0220200010
The Physics of Earthquake Forecasting
Seismological Research Letters June 03, 2020, Vol.91, 1936-1939. doi:https://doi.org/10.1785/0220200127
Focus Section
Preface to the Seismological Research Letters Data Mine Focus Section on the 2019 Ridgecrest Earthquake Sequence
Seismological Research Letters June 10, 2020, Vol.91, 1940-1942. doi:https://doi.org/10.1785/0220200155
Real‐Time High‐Rate GNSS Displacements: Performance Demonstration during the 2019 Ridgecrest, California, Earthquakes
Diego Melgar; Timothy I. Melbourne; Brendan W. Crowell; Jianghui Geng; Walter Szeliga; Craig Scrivner; Marcelo Santillan; Dara E. Goldberg
Seismological Research Letters December 18, 2019, Vol.91, 1943-1951. doi:https://doi.org/10.1785/0220190223
The U.S. Geological Survey’s Rapid Seismic Array Deployment for the 2019 Ridgecrest Earthquake Sequence
Elizabeth S. Cochran; Emily Wolin; Daniel E. McNamara; Alan Yong; David Wilson; Marcos Alvarez; Nicholas van der Elst; Adria McClain; Jamison Steidl
Seismological Research Letters January 15, 2020, Vol.91, 1952-1960. doi:https://doi.org/10.1785/0220190296
Caltech/USGS Southern California Seismic Network (SCSN) and Southern California Earthquake Data Center (SCEDC): Data Availability for the 2019 Ridgecrest Sequence
Egill Hauksson; Clara Yoon; Ellen Yu; Jennifer R. Andrews; Marcos Alvarez; Rayo Bhadha; Valerie Thomas
Seismological Research Letters January 22, 2020, Vol.91, 1961-1970. doi:https://doi.org/10.1785/0220190290
A High‐Resolution Seismic Catalog for the Initial 2019 Ridgecrest Earthquake Sequence: Foreshocks, Aftershocks, and Faulting Complexity
Seismological Research Letters January 22, 2020, Vol.91, 1971-1978. doi:https://doi.org/10.1785/0220190309
Coseismic Displacements and Surface Fractures from Sentinel‐1 InSAR: 2019 Ridgecrest Earthquakes
Seismological Research Letters January 15, 2020, Vol.91, 1979-1985. doi:https://doi.org/10.1785/0220190275
Using Daily Observations from Planet Labs Satellite Imagery to Separate the Surface Deformation between the 4 July 6.4 Foreshock and 5 July 7.1 Mainshock during the 2019 Ridgecrest ...
Seismological Research Letters January 22, 2020, Vol.91, 1986-1997. doi:https://doi.org/10.1785/0220190271
Co‐ and Early Postseismic Deformation Due to the 2019 Ridgecrest Earthquake Sequence Constrained by Sentinel‐1 and COSMO‐SkyMed SAR Data
Seismological Research Letters February 05, 2020, Vol.91, 1998-2009. doi:https://doi.org/10.1785/0220190299
The 2019 Ridgecrest, California, Earthquake Sequence Ground Motions: Processed Records and Derived Intensity Metrics
John M. Rekoske; Eric M. Thompson; Morgan P. Moschetti; Mike G. Hearne; Brad T. Aagaard; Grace A. Parker
Seismological Research Letters February 12, 2020, Vol.91, 2010-2023. doi:https://doi.org/10.1785/0220190292
Ground Deformation Data from GEER Investigations of Ridgecrest Earthquake Sequence
Scott J. Brandenberg; Jonathan P. Stewart; Pengfei Wang; Chukwuebuka C. Nweke; Kenneth Hudson; Christine A. Goulet; Xiaofeng Meng; Craig A. Davis; Sean K. Ahdi; Martin B. Hudson; Andrea Donnellan; Gregory Lyzenga; Marlon Pierce; Jun Wang; Maria A. Winters; Marie‐Pierre Delisle; Joseph Lucey; Yeulwoo Kim; Timu W. Gallien; Andrew Lyda; J. Sean Yeung; Omar Issa; Tristan Buckreis; Zhengxiang Yi
Seismological Research Letters February 19, 2020, Vol.91, 2024-2034. doi:https://doi.org/10.1785/0220190291
Surface Deformation Related to the 2019 7.1 and 6.4 Ridgecrest Earthquakes in California from GPS, SAR Interferometry, and SAR Pixel Offsets
Eric Jameson Fielding; Zhen Liu; Oliver L. Stephenson; Minyan Zhong; Cunren Liang; Angelyn Moore; Sang‐Ho Yun; Mark Simons
Seismological Research Letters March 04, 2020, Vol.91, 2035-2046. doi:https://doi.org/10.1785/0220190302
Survey and Continuous GNSS in the Vicinity of the July 2019 Ridgecrest Earthquakes
Seismological Research Letters February 12, 2020, Vol.91, 2047-2054. doi:https://doi.org/10.1785/0220190324
Waveform Cross‐Correlation Relocation and Focal Mechanisms for the 2019 Ridgecrest Earthquake Sequence
Seismological Research Letters February 26, 2020, Vol.91, 2055-2061. doi:https://doi.org/10.1785/0220190277
GPU‐Accelerated Automatic Microseismic Monitoring Algorithm (GAMMA) and Its Application to the 2019 Ridgecrest Earthquake Sequence
Seismological Research Letters March 18, 2020, Vol.91, 2062-2074. doi:https://doi.org/10.1785/0220190323
The GAGE Data and Field Response to the 2019 Ridgecrest Earthquake Sequence
Glen S. Mattioli; David A. Phillips; Kathleen M. Hodgkinson; Chris Walls; David J. Mencin; Beth A. Bartel; Donna J. Charlevoix; Chris Crosby; Michael J. Gottlieb; Brent Henderson; Wade Johnson; David Maggert; Doerte Mann; Charles M. Meertens; Jim Normandeau; Joe Pettit; Christine M. Puskas; Linda Rowan; Charles Sievers; Annie Zaino
Seismological Research Letters March 11, 2020, Vol.91, 2075-2086. doi:https://doi.org/10.1785/0220190283
Targeted High‐Resolution Structure from Motion Observations over the 6.4 and 7.1 Ruptures of the Ridgecrest Earthquake Sequence
Seismological Research Letters March 18, 2020, Vol.91, 2087-2095. doi:https://doi.org/10.1785/0220190274
Airborne Lidar and Electro‐Optical Imagery along Surface Ruptures of the 2019 Ridgecrest Earthquake Sequence, Southern California
Kenneth W. Hudnut; Benjamin A. Brooks; Katherine Scharer; Janis L. Hernandez; Timothy E. Dawson; Michael E. Oskin; J. Ramon Arrowsmith; Christine A. Goulet; Kelly Blake; Matthew L. Boggs; Stephan Bork; Craig L. Glennie; Juan Carlos Fernandez‐Diaz; Abhinav Singhania; Darren Hauser; Sven Sorhus
Seismological Research Letters April 22, 2020, Vol.91, 2096-2107. doi:https://doi.org/10.1785/0220190338
Rapid Geodetic Observations of Spatiotemporally Varying Postseismic Deformation Following the Ridgecrest Earthquake Sequence: The U.S. Geological Survey Response
Benjamin A. Brooks; Jessica Murray; Jerry Svarc; Eleyne Phillips; Ryan Turner; Mark Murray; Todd Ericksen; Kang Wang; Sarah Minson; Roland Burgmann; Fred Pollitz; Ken Hudnut; Johanna Nevitt; Evelyn Roeloffs; Janis Hernandez; Brian Olson
Seismological Research Letters May 27, 2020, Vol.91, 2108-2123. doi:https://doi.org/10.1785/0220200007
High‐Resolution Structure‐From‐Motion Models and Orthophotos of the Southern Sections of the 2019 7.1 and 6.4 Ridgecrest Earthquakes Surface Ruptures
Seismological Research Letters June 03, 2020, Vol.91, 2124-2126. doi:https://doi.org/10.1785/0220190289
Articles
Capturing, Preserving, and Digitizing Legacy Seismic Data from the Montserrat Volcano Observatory Analog Seismic Network, July 1995–December 2004
Glenn Thompson; John A. Power; Jochen Braunmiller; Andrew B. Lockhart; Lloyd Lynch; Wendy McCausland; Charlotte A. Rowe; Thomas Shea; Randall A. White; Charles I. Breithaupt
Seismological Research Letters May 27, 2020, Vol.91, 2127-2140. doi:https://doi.org/10.1785/0220200012
Cascading Partial Rupture of the Flores Thrust during the 2018 Lombok Earthquake Sequence, Indonesia
Rino Salman; Eric O. Lindsey; Karen H. Lythgoe; Kyle Bradley; Muzli Muzli; Sang‐Ho Yun; Shi Tong Chin; Cheryl W. J. Tay; Fidel Costa; Shengji Wei; Emma M. Hill
Seismological Research Letters May 06, 2020, Vol.91, 2141-2151. doi:https://doi.org/10.1785/0220190378
Hypocenter and Magnitude Analysis of Aftershocks of the 2018 Lombok, Indonesia, Earthquakes Using Local Seismographic Networks
Annisa Trisnia Sasmi; Andri Dian Nugraha; Muzli Muzli; Sri Widiyantoro; Zulfakriza Zulfakriza; Shengji Wei; David P. Sahara; Agus Riyanto; Nanang T. Puspito; Awali Priyono; Tim Greenfield; Haunan Afif; Pepen Supendi; Daryono Daryono; Ardianto Ardianto; Devy Kamil Syahbana; Yayan Mi’rojul Husni; Billy S. Prabowo; Achmad Fajar Narotama Sarjan
Seismological Research Letters May 27, 2020, Vol.91, 2152-2162. doi:https://doi.org/10.1785/0220190348
Return Times of Large Earthquakes Cannot Be Estimated Correctly from Seismicity Rates: 1906 San Francisco and 1717 Alpine Fault Ruptures
Seismological Research Letters May 13, 2020, Vol.91, 2163-2169. doi:https://doi.org/10.1785/0220200008
Nonstationary Background Seismicity Rate and Evolution of Stress Changes in the Changning Salt Mining and Shale‐Gas Hydraulic Fracturing Region, Sichuan Basin, China
Ke Jia; Shiyong Zhou; Jiancang Zhuang; Changsheng Jiang; Yicun Guo; Zhaohui Gao; Shesheng Gao; Yosihiko Ogata; Xiaodong Song
Seismological Research Letters May 20, 2020, Vol.91, 2170-2181. doi:https://doi.org/10.1785/0220200092
Magnitude‐Dependent Transient Increase of Seismogenic Depth
Seismological Research Letters June 10, 2020, Vol.91, 2182-2191. doi:https://doi.org/10.1785/0220190392
Can We Trust High‐Frequency Content in Strong‐Motion Database Signals? Impact of Housing, Coupling, and Installation Depth of Seismic Sensors
Seismological Research Letters May 06, 2020, Vol.91, 2192-2205. doi:https://doi.org/10.1785/0220190163
Toward Global Earthquake Early Warning with the MyShake Smartphone Seismic Network, Part 1: Simulation Platform and Detection Algorithm
Seismological Research Letters May 27, 2020, Vol.91, 2206-2217. doi:https://doi.org/10.1785/0220190177
Toward Global Earthquake Early Warning with the MyShake Smartphone Seismic Network, Part 2: Understanding MyShake Performance around the World
Seismological Research Letters May 27, 2020, Vol.91, 2218-2233. doi:https://doi.org/10.1785/0220190178
Extracting Long‐Period Surface Waves and Free Oscillations Using Ambient Noise Recorded by Global Distributed Superconducting Gravimeters
Seismological Research Letters May 27, 2020, Vol.91, 2234-2246. doi:https://doi.org/10.1785/0220190166
When Clocks Are Not Working: OBS Time Correction
Seismological Research Letters May 27, 2020, Vol.91, 2247-2258. doi:https://doi.org/10.1785/0220190342
When Source and Path Components Trade‐Off in Ground‐Motion Prediction Equations
Seismological Research Letters May 27, 2020, Vol.91, 2259-2267. doi:https://doi.org/10.1785/0220190379
Sea Surface Gravity Waves Excited by Dynamic Ground Motions from Large Regional Earthquakes
Seismological Research Letters June 03, 2020, Vol.91, 2268-2277. doi:https://doi.org/10.1785/0220190267
Virtual Sources of Body Waves from Noise Correlations in a Mineral Exploration Context
Philippe Dales; Laura Pinzon‐Ricon; Florent Brenguier; Pierre Boué; Nick Arndt; John McBride; François Lavoué; Christopher J. Bean; Sophie Beaupretre; Rosemary Fayjaloun; Gerrit Olivier
Seismological Research Letters June 03, 2020, Vol.91, 2278-2286. doi:https://doi.org/10.1785/0220200023
Characterization of an Intraplate Seismogenic Zone Using Geophysical and Borehole Data: The Vila Franca de Xira Fault, Portugal
João Carvalho; Daniela Alves; João Cabral; Ranajit Ghose; José Borges; Ruben Dias; Elsa Ramalho; Bento Caldeira; João Casacão; Jaime Leote
Seismological Research Letters May 20, 2020, Vol.91, 2287-2297. doi:https://doi.org/10.1785/0220190317
Seismic Observations of Microearthquakes from the Masada Deep Borehole
Seismological Research Letters May 06, 2020, Vol.91, 2298-2309. doi:https://doi.org/10.1785/0220190391
Virtual Fault Ruptures in Area‐Source Zones for PSHA: Are They Always Needed?
Seismological Research Letters April 29, 2020, Vol.91, 2310-2319. doi:https://doi.org/10.1785/0220190345
Large Uncertainties in Earthquake Stress‐Drop Estimates and Their Tectonic Consequences
Seismological Research Letters May 20, 2020, Vol.91, 2320-2329. doi:https://doi.org/10.1785/0220200004
Neural Network Applications in Earthquake Prediction (1994–2019): Meta‐Analytic and Statistical Insights on Their Limitations
Seismological Research Letters May 20, 2020, Vol.91, 2330-2342. doi:https://doi.org/10.1785/0220200021
Correlation between Ambient Seismic Noises and Economic Growth
Seismological Research Letters June 03, 2020, Vol.91, 2343-2354. doi:https://doi.org/10.1785/0220190369
Energy‐ and Predominant‐Period‐Dependent P‐Wave Onset Picker (EDP‐Picker)
Seismological Research Letters June 10, 2020, Vol.91, 2355-2367. doi:https://doi.org/10.1785/0220190260
Electronic Seismologist
SeisIO: A Fast, Efficient Geophysical Data Architecture for the Julia Language
Seismological Research Letters April 29, 2020, Vol.91, 2368-2377. doi:https://doi.org/10.1785/0220190295
PyKonal: A Python Package for Solving the Eikonal Equation in Spherical and Cartesian Coordinates Using the Fast Marching Method
Seismological Research Letters June 03, 2020, Vol.91, 2378-2389. doi:https://doi.org/10.1785/0220190318
Historical Seismologist
The 1258 Earthquake in Onteniente (Southeast Spain) Not Reported until 2002 in Any Catalog
Seismological Research Letters May 20, 2020, Vol.91, 2390-2394. doi:https://doi.org/10.1785/0220200090
Earthquake Lites
Rose Parade Seismology: Signatures of Floats and Bands on Optical Fiber
Xin Wang; Ethan F. Williams; Martin Karrenbach; Miguel González Herráez; Hugo Fidalgo Martins; Zhongwen Zhan
Seismological Research Letters May 06, 2020, Vol.91, 2395-2398. doi:https://doi.org/10.1785/0220200091
Data Mine
A Rapid Response Network to Record Aftershocks of the 2015 7.8 Gorkha Earthquake in Nepal
Marianne S. Karplus; Mohan Pant; Soma Nath Sapkota; John Nábělek; Aaron A. Velasco; Lok Bijaya Adhikari; Abhijit Ghosh; Simon L. Klemperer; Vaclav Kuna; Manuel M. Mendoza; Jochen Braunmiller
Seismological Research Letters May 06, 2020, Vol.91, 2399-2408. doi:https://doi.org/10.1785/0220190394
RESIF RAP and RLBP Dataset of Earthquake Ground Motion in Mainland France
Paola Traversa; Emeline Maufroy; Fabrice Hollender; Vincent Perron; Vincent Bremaud; Hussein Shible; Stéphane Drouet; Philippe Guéguen; Mickael Langlais; David Wolyniec; Cathérine Péquegnat; Isabelle Douste‐Bacque
Seismological Research Letters May 06, 2020, Vol.91, 2409-2424. doi:https://doi.org/10.1785/0220190367
Installation and Performance of the Albuquerque Seismological Laboratory Small‐Aperture Posthole Array
Robert E. Anthony; Adam T. Ringler; David C. Wilson; J. Zebulon Maharrey; Gary Gyure; Aaron Pepiot; Leo D. Sandoval; Samuel Sandoval; Thomas Telesha; Gilbert Vallo; Nicholas Voss
Seismological Research Letters June 03, 2020, Vol.91, 2425-2437. doi:https://doi.org/10.1785/0220200080
Erratum
Rapid Estimation of the Epicentral Distance in the Earthquake Early Warning System around the Tehran Region, Iran
Seismological Research Letters May 20, 2020, Vol.91, 2438. doi:https://doi.org/10.1785/0220200113
SSA News and Notes
SSA News and Notes
Seismological Research Letters June 10, 2020, Vol.91, 2439-2440. doi:https://doi.org/10.1785/0220200158
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Cover Image
Cover Image
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On 4 July 2019, much of California was shaken by a magnitude 6.4 earthquake near Ridgecrest. It was followed on 6 July by a larger, magnitude 7.1 event. The earthquake sequence, consisting of thousands of aftershocks, is ongoing and has proven to be complex with rupture on multiple faults. In this photo, USGS geologists Josie Nevitt and Beth Haddon take measurements of the surface rupture, described in detail by Ponti et al. (this issue). Eighteen additional papers in this issue describe and make available data and derived products collected and assembled in the aftermath of July earthquakes.
Image credit: Ben Brooks, USGS
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