The Advanced National Seismic System ComCat Earthquake Catalog: Nine Years of Amassing Earthquake Source Parameters and Impact Data
The U.S. Geological Survey (USGS) maintains the Advanced National Seismic System Comprehensive Catalog or “ComCat”. ComCat is a repository of earthquake bulletins (locations, phase data, magnitudes and moment tensor solutions) and higher-level products including earthquake finite-fault models, “Did You Feel It?” reports, ShakeMap ground motion estimates, PAGER impact estimates, ShakeAlert post-alert summaries, ground-failure estimates and tectonic summaries. Most of the U.S. earthquake source parameters are contributed by USGS-supported regional seismic networks. Global earthquakes come primarily from the International Seismological Centre-Global Earthquake Model (ISC-GEM) catalog and the USGS National Earthquake Information Center’s Preliminary Determination of Epicenters (PDE) bulletin that, in turn, contain contributions from many non-U.S. networks. Since its creation in 2013, ComCat has expanded by integrating global and regional earthquake bulletins and supporting higher-level products. Presently, ComCat contains hypocentral information for about 4 million earthquakes, ~41,000 moment tensors, ~28,000 ShakeMaps, ~7,200 PAGER results and 224 finite fault models. In our presentation, we provide an overview of ComCat contents and tips for accessing the data. We show how ComCat completeness improves over time for different regions and summarize the contents of the major contributing catalogs. We also present a description of the tools and semi-automated quality-control procedures developed to uncover errors including systematic magnitude biases, missing time periods, duplicate event postings and incorrectly associated events. Finally, we provide information on future ComCat developments designed to improve the quality, content, utility and accessibility of the repository.
Session: Network Seismology: Recent Developments, Challenges and Lessons Learned [Poster]
Type: Poster
Room: Evergreen Ballroom
Date: 4/22/2022
Presentation Time: 08:00 AM Pacific
Presenting Author: Paul Earle
Student Presenter: No
Additional Authors
Paul Earle Presenting Author Corresponding Author pearle@usgs.gov U.S. Geological Survey |
Nick Ambruz nambruz@usgs.gov U.S. Geological Survey |
Harley Benz benz@usgs.gov U.S. Geological Survey |
William Yeck wyeck@usgs.gov U.S. Geological Survey |
Jeremy Fee jfee@usgs.gov U.S. Geological Survey |
Eric Martinez emartinez@usgs.gov U.S. Geological Survey |
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The Advanced National Seismic System ComCat Earthquake Catalog: Nine Years of Amassing Earthquake Source Parameters and Impact Data
Category
Network Seismology: Recent Developments, Challenges and Lessons Learned
Description