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Rapid Earthquake Characterization Using MEMS Accelerometers and Volunteer Hosts Following the M 7.2 Darfield, New Zealand, Earthquake

Lawrence, Jesse F. and Cochran, Elizabeth S. and Chung, Angela and Kaiser, Anna and Christensen, Carl M. and Allen, Richard and Baker, Jack W. and Fry, Bill and Heaton, Thomas and Kilb, Deborah and Kohler, Monica D. and Taufer, Michela (2014) Rapid Earthquake Characterization Using MEMS Accelerometers and Volunteer Hosts Following the M 7.2 Darfield, New Zealand, Earthquake. Bulletin of the Seismological Society of America, 104 (1). pp. 184-192. ISSN 0037-1106. http://resolver.caltech.edu/CaltechAUTHORS:20140306-103803406

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Abstract

We test the feasibility of rapidly detecting and characterizing earthquakes with the Quake‐Catcher Network (QCN) that connects low‐cost microelectromechanical systems accelerometers to a network of volunteer‐owned, Internet‐connected computers. Following the 3 September 2010 M 7.2 Darfield, New Zealand, earthquake we installed over 180 QCN sensors in the Christchurch region to record the aftershock sequence. The sensors are monitored continuously by the host computer and send trigger reports to the central server. The central server correlates incoming triggers to detect when an earthquake has occurred. The location and magnitude are then rapidly estimated from a minimal set of received ground‐motion parameters. Full seismic time series are typically not retrieved for tens of minutes or even hours after an event. We benchmark the QCN real‐time detection performance against the GNS Science GeoNet earthquake catalog. Under normal network operations, QCN detects and characterizes earthquakes within 9.1 s of the earthquake rupture and determines the magnitude within 1 magnitude unit of that reported in the GNS catalog for 90% of the detections.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1785/0120120196DOIArticle
http://bssa.geoscienceworld.org/content/104/1/184PublisherArticle
ORCID:
AuthorORCID
Heaton, Thomas0000-0003-3363-2197
Additional Information:© 2014 Seismological Society of America. Manuscript received 8 June 2012; Published Online 7 January 2014. We thank the hundreds of QCN volunteer hosts and the field crew, without whom this study would never have occurred. Many thanks to Dave Anderson whose support and augmentation of BOINC has allowed QCN to grow quickly. We thank Hiroo Kanamori and Dan McNamara for thorough feedback during the revisions of this manuscript. This research was supported in part by NSF EAR 1027802 and the New Zealand Natural Hazards Research Platform.
Funders:
Funding AgencyGrant Number
NSFEAR 1027802
New Zealand Natural Hazards Research PlatformUNSPECIFIED
Record Number:CaltechAUTHORS:20140306-103803406
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140306-103803406
Official Citation:Jesse F. Lawrence, Elizabeth S. Cochran, Angela Chung, Anna Kaiser, Carl M. Christensen, Richard Allen, Jack W. Baker, Bill Fry, Thomas Heaton, Deborah Kilb, Monica D. Kohler, and Michela Taufer Rapid Earthquake Characterization Using MEMS Accelerometers and Volunteer Hosts Following the M 7.2 Darfield, New Zealand, Earthquake Bulletin of the Seismological Society of America, February 2014, v. 104, p. 184-192, First published on January 7, 2014, doi:10.1785/0120120196
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44180
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:06 Mar 2014 19:14
Last Modified:13 Dec 2016 20:58

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