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Global Catalog of Calibrated Earthquake Locations

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Summary

This dataset is a repository of calibrated earthquake locations (referred to as the Global Catalog of Calibrated Earthquake Locations, GCCEL or "the Catalog") that have been determined using the Hypocentroidal Decomposition algorithm for multiple event relocation (Jordan and Sverdrup, 1981), as implemented and developed in the program "mloc" by Eric Bergman since 1989. Since the late 1990s, mloc's development has emphasized its use for obtaining calibrated locations, meaning hypocenters with minimal location bias from unknown Earth structure and with reliable estimates of uncertainty. In recent years the program has been widely used by researchers at the United States Geological Survey's National Earthquake Information Center. Calibrated [...]

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GCCEL_data_format.pdf 92.89 KB
GCCEL_Overview.pdf 107.47 KB
Bibliography.pdf 94.33 KB
Summary_Plots_for_GCCEL.pdf 59.66 KB
P_residuals.png thumbnail 67.9 KB
S_residuals.png thumbnail 70.84 KB
traveltimes.png thumbnail 910.25 KB
eq_map.png thumbnail 2.04 MB
earthquakelist.csv 1.06 MB
all_gccel.dat.gz 51.54 MB
Shapefile: earthquakelist.zip
earthquakelist.cpg 5 Bytes
earthquakelist.dbf 16.07 MB
earthquakelist.prj 425 Bytes
earthquakelist.shp 421.55 KB
earthquakelist.shx 120.51 KB

Purpose

Acknowledgements: This project would not have been possible without the arrival time data and preliminary hypocenters that have been retrieved from the ISC Bulletin: International Seismological Centre, On-line Bulletin, http://www.isc.ac.uk, Internatl. Seismol. Cent., Thatcham, United Kingdom, 2015. Bob Engdahl originally brought the subject of calibrated earthquake locations to Eric Bergman’s attention and provided vast and varied guidance in the art of earthquake location for the projects that culminate in the GCCEL. Without his influence and encouragement it would not have happened.
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