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Title: Searching for hidden earthquakes in Southern California

Abstract

Earthquakes follow a well-known power-law size relation, with smaller events occurring much more often than larger events. Earthquake catalogs are thus dominated by small earthquakes, yet still missing a much larger number of even smaller events caused by signal fidelity issues. To overcome these limitations, we applied a template matching detection technique to the entire waveform archive of the regional seismic network in southern California. Furthermore this effort resulted in a catalog with 1.81 million earthquakes, a factor of 10 increase, which provides important new insights into the geometry of fault zones at depth, foreshock behavior and nucleation processes, and earthquake triggering mechanisms. The extraordinary detail resolved in this type of catalog will facilitate a new generation of analyses of earthquakes and faults.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [3]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of California San Diego, La Jolla, CA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1547997
Alternate Identifier(s):
OSTI ID: 1511259
Report Number(s):
LA-UR-19-20273
Journal ID: ISSN 0036-8075
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Earth Sciences

Citation Formats

Ross, Zachary E., Trugman, Daniel T., Hauksson, Egill, and Shearer, Peter M. Searching for hidden earthquakes in Southern California. United States: N. p., 2019. Web. doi:10.1126/science.aaw6888.
Ross, Zachary E., Trugman, Daniel T., Hauksson, Egill, & Shearer, Peter M. Searching for hidden earthquakes in Southern California. United States. doi:10.1126/science.aaw6888.
Ross, Zachary E., Trugman, Daniel T., Hauksson, Egill, and Shearer, Peter M. Thu . "Searching for hidden earthquakes in Southern California". United States. doi:10.1126/science.aaw6888.
@article{osti_1547997,
title = {Searching for hidden earthquakes in Southern California},
author = {Ross, Zachary E. and Trugman, Daniel T. and Hauksson, Egill and Shearer, Peter M.},
abstractNote = {Earthquakes follow a well-known power-law size relation, with smaller events occurring much more often than larger events. Earthquake catalogs are thus dominated by small earthquakes, yet still missing a much larger number of even smaller events caused by signal fidelity issues. To overcome these limitations, we applied a template matching detection technique to the entire waveform archive of the regional seismic network in southern California. Furthermore this effort resulted in a catalog with 1.81 million earthquakes, a factor of 10 increase, which provides important new insights into the geometry of fault zones at depth, foreshock behavior and nucleation processes, and earthquake triggering mechanisms. The extraordinary detail resolved in this type of catalog will facilitate a new generation of analyses of earthquakes and faults.},
doi = {10.1126/science.aaw6888},
journal = {Science},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aaw6888

Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Works referenced in this record:

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journal, March 2007

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Abundant off-fault seismicity and orthogonal structures in the San Jacinto fault zone
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Earth Tides Can Trigger Shallow Thrust Fault Earthquakes
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    Works referencing / citing this record:

    The role of stress transfer in earthquake occurrence
    journal, December 1999


    Report on the August 2012 Brawley Earthquake Swarm in Imperial Valley, Southern California
    journal, March 2013

    • Hauksson, E.; Stock, J.; Bilham, R.
    • Seismological Research Letters, Vol. 84, Issue 2
    • DOI: 10.1785/0220120169

    Nucleation of the 1999 Izmit earthquake by a triggered cascade of foreshocks
    journal, June 2018


    Aftershocks driven by a high-pressure CO2 source at depth
    journal, February 2004

    • Miller, Stephen A.; Collettini, Cristiano; Chiaraluce, Lauro
    • Nature, Vol. 427, Issue 6976
    • DOI: 10.1038/nature02251

    Superficial simplicity of the 2010 El Mayor–Cucapah earthquake of Baja California in Mexico
    journal, July 2011

    • Wei, Shengji; Fielding, Eric; Leprince, Sebastien
    • Nature Geoscience, Vol. 4, Issue 9
    • DOI: 10.1038/ngeo1213

    Migration of early aftershocks following the 2004 Parkfield earthquake
    journal, November 2009

    • Peng, Zhigang; Zhao, Peng
    • Nature Geoscience, Vol. 2, Issue 12
    • DOI: 10.1038/ngeo697

    Earthquake triggering by seismic waves following the Landers and Hector Mine earthquakes
    journal, May 2001

    • Gomberg, J.; Reasenberg, P. A.; Bodin, P.
    • Nature, Vol. 411, Issue 6836
    • DOI: 10.1038/35078053

    Remotely Triggered Seismicity on the United States West Coast following the Mw 7.9 Denali Fault Earthquake
    journal, December 2004

    • Prejean, S. G.
    • Bulletin of the Seismological Society of America, Vol. 94, Issue 6B
    • DOI: 10.1785/0120040610

    Non-volcanic tremor and low-frequency earthquake swarms
    journal, March 2007

    • Shelly, David R.; Beroza, Gregory C.; Ide, Satoshi
    • Nature, Vol. 446, Issue 7133
    • DOI: 10.1038/nature05666

    Generalized Seismic Phase Detection with Deep Learning
    journal, August 2018

    • Ross, Zachary E.; Meier, Men‐Andrin; Hauksson, Egill
    • Bulletin of the Seismological Society of America, Vol. 108, Issue 5A
    • DOI: 10.1785/0120180080

    Triggering of earthquake aftershocks by dynamic stresses
    journal, November 2000

    • Kilb, Deborah; Gomberg, Joan; Bodin, Paul
    • Nature, Vol. 408, Issue 6812
    • DOI: 10.1038/35046046

    Earth Tides Can Trigger Shallow Thrust Fault Earthquakes
    journal, November 2004


    Seismicity Remotely Triggered by the Magnitude 7.3 Landers, California, Earthquake
    journal, June 1993


    The 2012 Brawley swarm triggered by injection-induced aseismic slip
    journal, July 2015

    • Wei, Shengji; Avouac, Jean-Philippe; Hudnut, Kenneth W.
    • Earth and Planetary Science Letters, Vol. 422
    • DOI: 10.1016/j.epsl.2015.03.054

    Waveform Relocated Earthquake Catalog for Southern California (1981 to June 2011)
    journal, October 2012

    • Hauksson, E.; Yang, W.; Shearer, P. M.
    • Bulletin of the Seismological Society of America, Vol. 102, Issue 5
    • DOI: 10.1785/0120120010

    Decay of aftershock density with distance indicates triggering by dynamic stress
    journal, June 2006


    Abundant off-fault seismicity and orthogonal structures in the San Jacinto fault zone
    journal, March 2017

    • Ross, Zachary E.; Hauksson, Egill; Ben-Zion, Yehuda
    • Science Advances, Vol. 3, Issue 3
    • DOI: 10.1126/sciadv.1601946

    Detailed Fault Structure of the 2000 Western Tottori, Japan, Earthquake Sequence
    journal, August 2003

    • Fukuyama, E.
    • Bulletin of the Seismological Society of America, Vol. 93, Issue 4
    • DOI: 10.1785/0120020123

    A Detailed Earthquake Catalog for the San Jacinto Fault‐Zone Region in Southern California
    journal, July 2019

    • White, Malcolm C. A.; Ben‐Zion, Yehuda; Vernon, Frank L.
    • Journal of Geophysical Research: Solid Earth, Vol. 124, Issue 7
    • DOI: 10.1029/2019jb017641