The Red Atrapa Sismos (Quake Catcher Network in Mexico): assessing performance during large and damaging earthquakes.

Seismological Research Letters
By: , and 

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Abstract

The Quake‐Catcher Network (QCN) is an expanding seismic array made possible by thousands of participants who volunteered time and resources from their computers to record seismic data using low‐cost accelerometers (http://qcn.stanford.edu/; last accessed December 2014). Sensors based on Micro‐Electromechanical Systems (MEMS) technology have rapidly improved over the last few years due to the demand of the private sector (e.g., automobiles, cell phones, and laptops). For strong‐motion applications, low‐cost MEMS accelerometers have promising features due to an increasing resolution and near‐linear phase and amplitude response (Cochran, Lawrence, Christensen, and Jakka, 2009Clayton et al., 2011Evans et al., 2014).

Each volunteer computer monitors ground motion and communicates using the Berkeley Open Infrastructure for Network Computing (BOINC, Anderson, 2004). Using a standard short‐term average, long‐term average (STLA) algorithm (Earle and Shearer, 1994Cochran, Lawrence, Christensen, Chung, 2009Cochran, Lawrence, Christensen, and Jakka, 2009), volunteer computer and sensor systems detect abrupt changes in the acceleration recordings. Each time a possible trigger signal is declared, a small package of information containing sensor and ground‐motion information is streamed to one of the QCN servers (Chung et al., 2011). Trigger signals, correlated in space and time, are then processed by the QCN server to look for potential earthquakes.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title The Red Atrapa Sismos (Quake Catcher Network in Mexico): assessing performance during large and damaging earthquakes.
Series title Seismological Research Letters
DOI 10.1785/0220140171
Volume 86
Issue 3
Year Published 2015
Language English
Publisher Seismological Society of America
Contributing office(s) Earthquake Science Center
Description 8 p.
First page 848
Last page 855
Country Mexico
Online Only (Y/N) N
Additional Online Files (Y/N) N