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Open-Source ANSS Quake Monitoring System Software

Hartog, J. Renate and Friberg, Paul A. and Kress, Victor C. and Bodin, Paul and Bhadha, Rayomand (2020) Open-Source ANSS Quake Monitoring System Software. Seismological Research Letters, 91 (2A). pp. 677-686. ISSN 0895-0695. doi:10.1785/0220190219.

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ANSS stands for the Advanced National Seismic System of the U.S.A., and ANSS Quake Monitoring System (AQMS) is the earthquake management system (EMS) that most of its member regional seismic networks (RSNs) use. AQMS is based on Earthworm, but instead of storing files on disk, it uses a relational database with replication capability to store pick, amplitude, waveform, and event parameters. The replicated database and other features of AQMS make it a fully redundant system. A graphical user interface written in Java, Jiggle, is used to review automatically generated picks and event solutions, relocate events, and recalculate magnitudes. Add‐on mechanisms to produce various postearthquake products such as ShakeMaps and focal mechanisms are available as well. It provides a configurable automatic alarming and notification system. The Pacific Northwest Seismic Network, one of the Tier 1 ANSS RSNs, has modified AQMS to be compatible with a freely available, capable, open‐source database system, PostgreSQL, and is running this version successfully in production. The AQMS Software Working Group has moved the software from a subversion repository server hosted at the California Institute of Technology to a public repository at The drawback of AQMS as a whole is that it is complex to fully configure and comprehend. Nevertheless, the fact that it is very capable, documented, and now free to use, might make it an attractive EMS choice for many seismic networks.

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Additional Information:© 2020 Seismological Society of America. Manuscript received 9 August 2019; Published online 20 November 2019. The authors are grateful to all the programmers who have worked on Earthworm and Advanced National Seismic System (ANSS) Quake Monitoring System (AQMS), but in particular: Aparna Bhaskaran, Shang‐Lin Chen, Andrew Good, Peter Lombard, Phil Maechling, Doug Neuhauser, Patrick Small, Kalpesh Solanki, Ellen Yu, and Stephane Zuzlewski. The authors thank two reviewers for their prompt reviews and thorough reading of the original article. Funding for the development of AQMS has come from the U.S. Geological Survey, the state of California, California Institute of Technology, University of California Berkeley, and the University of Washington. The Gordon and Betty Moore Foundation funded the PostgreSQL transition. Data and Resources: No data were used in this article; however, many resources were referred to and are listed as follows: Advanced National Seismic System (ANSS) Quake Monitoring System (AQMS) source code: (last accessed September 2019, to become obsolete), or (last accessed September 2019) or (last accessed September 2019). AQMS database schema: or (last accessed October 2019); Earthworm: and (last accessed September 2019); Hypoinverse: (includes documentation) or (latest source code, last accessed September 2019); California Integrated Seismic Network (CISN) Messaging Service (QWServer): (last accessed September 2019); getStationXML: (last accessed October 2019); FDSN StationXML specification: (last accessed September 2019); QuakeML specification: (last accessed September 2019); SEISAN: (last accessed September 2019); SeisComp3: (last accessed September 2019); ANSS Comprehensive Catalog: (last accessed September 2019); U.S. Geological Survey’s Product Distribution Layer: (last accessed September 2019); ANSS Station Information System: (last accessed September 2019); Oracle vs. PostgreSQL comparison: (last accessed September 2019). PostgreSQL feature matrix website can be accessed at (last accessed September 2019). The Geoserve (Fig. 1) can be accessed at (last accessed September 2019).
Group:Seismological Laboratory
Funding AgencyGrant Number
State of CaliforniaUNSPECIFIED
University of California, BerkeleyUNSPECIFIED
University of WashingtonUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Issue or Number:2A
Record Number:CaltechAUTHORS:20200326-090421834
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Official Citation:Renate Hartog, J., P. A. Friberg, V. C. Kress, P. Bodin, and R. Bhadha (2019). Open-Source ANSS Quake Monitoring System Software, Seismol. Res. Lett. 91, 677–686, doi: 10.1785/0220190219.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102119
Deposited By: Tony Diaz
Deposited On:27 Mar 2020 03:23
Last Modified:16 Nov 2021 18:08

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