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Regional Seismic Networks Operating along the West Coast of the United States of America

Hellweg, Margaret and Bodin, Paul and Bormann, Jayne M. and Haddadi, Hamid and Hauksson, Egill and Smith, Kenneth D. (2020) Regional Seismic Networks Operating along the West Coast of the United States of America. Seismological Research Letters, 91 (2A). pp. 695-706. ISSN 0895-0695. doi:10.1785/0220190282.

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The Pacific coast of the contiguous United States hosts the highest seismic risk in the country due to the intersection of high‐seismic hazard and the high densities of population and infrastructure. The regional seismic networks in Washington, Oregon, Nevada, and California have operated for many years and have collected long catalogs and large amounts of seismic waveform data in a variety of formats, including digital records. These data are available for engineering purposes and research into earthquakes, other natural and man‐made seismic sources, and the Earth’s structure. The West Coast networks are closely coordinating as they embark on the implementation of West Coast ShakeAlert, an earthquake early warning system.

Item Type:Article
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Hauksson, Egill0000-0002-6834-5051
Additional Information:© 2020 Seismological Society of America. Manuscript received 30 September 2019; Published online 12 February 2020. The authors thank our partners in earthquake reporting at the U.S. Geological Survey (USGS) regional networks, as well as their and our staff members who ensure that the seismic stations are operating, the data are flowing, and the earthquake information and data are being disseminated. The authors are also grateful for the financial support of our real‐time earthquake information operations from the USGS (USGS Cooperative Agreement G15AC00023: California Institute of Technology [Caltech], G15AC00042: University of California, Berkeley [UCB], G15AC00052: University of Nevada, Reno [UNR], G15AC00053: University of Oregon [UO], G15AC00054: University of Washington [UW]), and from our state governments (California Governor's Office of Emergency Services [CalOES]: 6012‐2017 [Caltech], 6011‐2017 [UCB]), as well as funds and collaboration from other partner organizations. The development, implementation, and buildout of the West Coast ShakeAlert earthquake early warning (EEW) system have been supported by the USGS (G19AS00034 [Caltech], G19AC00298 [UCB], G19AC00265 [UNR], G19AC00294 [UO], G19AC00297 [UW]), the Gordon and Betty Moore Foundation (Grant Numbers 3023 and 5529 [Caltech], 3024 and 4916 [UCB], 3025 [UW]), and our state governments (CalOES 6172‐2018 and 6142‐2018 [UCB], 6166‐2018 California Geological Survey [CGS]). The authors also thank the editors and the three reviewers, two anonymous and David Oppenheimer, for their enthusiasm for our efforts and their comments and suggestions that contributed to a very much improved article. The authors thank Fabia Terra for producing the figures, and all those who contributed station information to support her work. Data and Resources: Regional Seismic Network (RSN) webpages: Pacific Northwest Seismic Network (PNSN;, Northern Nevada (NN;, California Integrated Seismic Network (CISN;, Northern California Seismic System (NCSS;, and, California Geological Survey (CGS;, Southern California Seismic Network (SCSN; Waveform data and station information and metadata: Northern California Earthquake Data Center (NCEDC;, Southern California Earthquake Data Center (SCEDC;, Incorporated Research Institutions for Seismology (IRIS) Data Center ( Earthquake catalogs and other network products (ShakeMaps, mechanisms, and moment tensor solutions): U.S. Geological Survey Comprehensive Catalog (USGS ComCat):; PNSN:; NN:; CISN:,,, Programs referred to in this article include the Advanced National Seismic System (ANSS) Quake Monitoring System (AQMS) software package and documentation: and; database schema: Earthworm earthquake processing software:; fpfit:; hypoinverse:; Shakemap: U.S. seismic hazard maps are available at ANSS is available at Earthquakes generated by Seahawk fans in Seattle are available at Federal Emergency Management Agency (FEMA) earthquake publications are available at Applied Technology Council is available at The NetQuakes project is available at and monitoring of NetQuakes is available at The NCEDC catalog search is available at The SCEDC data center is available at The MyShake app is available at The ALERTWildfire website is available at The Seattle liquefaction array is available at GitHub NCSS catalogs are available at The Ocean Observatories Initiative website is available at Ocean Networks Canada is available at All websites were last accessed in January 2020.
Group:Seismological Laboratory
Funding AgencyGrant Number
California Office of Emergency Services6012‐2017
California Office of Emergency Services6011‐2017
Gordon and Betty Moore Foundation3023
Gordon and Betty Moore Foundation5529
Gordon and Betty Moore Foundation3024
Gordon and Betty Moore Foundation4916
Gordon and Betty Moore Foundation3025
California Office of Emergency Services6172‐2018
California Office of Emergency Services6142‐2018
California Office of Emergency Services6166‐2018
Issue or Number:2A
Record Number:CaltechAUTHORS:20200213-111137998
Persistent URL:
Official Citation:Margaret Hellweg, Paul Bodin, Jayne M. Bormann, Hamid Haddadi, Egill Hauksson, Kenneth D. Smith; Regional Seismic Networks Operating along the West Coast of the United States of America. Seismological Research Letters ; 91 (2A): 695–706. doi:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101271
Deposited By: Tony Diaz
Deposited On:13 Feb 2020 21:23
Last Modified:16 Nov 2021 18:01

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