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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 and Jamison Steidl
The U. S. Geological Survey's rapid seismic array deployment for the 2019 Ridgecrest earthquake sequence
Seismological Research Letters (January 2020) Pre-Issue Publication

Abstract

Rapid seismic deployments following large earthquakes capture ephemeral near-field recordings of aftershocks and ambient noise that can provide valuable data for seismological studies. The U.S. Geological Survey installed 19 temporary seismic stations following the 4 July 2019 Mw 6.4 and 6 July 2019 (UTC) Mw 7.1 earthquakes near the city of Ridgecrest, California. The stations record the aftershock sequence beginning two days after the mainshock and are expected to remain in the field through approximately January 2020. The deployment augments the permanent seismic network in the area to improve azimuthal coverage and provide additional near-field observations. This article summarizes the motivation and goals of the deployment; details of station installation, instrumentation, and configurations; and initial data quality and observations from the network. We expect these data to be useful for a range of studies including detailing near-field variability in strong ground motions, determining stress drops and rupture directivity of small events, imaging the fault zone, documenting the evolution of crustal properties within and outside of the fault zone, and others.


ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: Pre-Issue Publication
Title: The U. S. Geological Survey's rapid seismic array deployment for the 2019 Ridgecrest earthquake sequence
Affiliation: U. S. Geological Survey, Earthquake Science Center, Pasadena, CA, United States
Published: 20200115
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 38
Accession Number: 2020-066866
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch map
N35°30'00" - N36°00'00", W118°00'00" - W117°00'00"
Secondary Affiliation: University of California Santa Barbara, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202019
Program Name: USGSOPNon-USGS publications with USGS authors
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