Performance of Earthworm/AQMS in the Puerto Rico Seismic Network During the January 2020 Southwestern Puerto Rico Earthquake Sequence

Session: Early Results from the 2020 M6.4 Indios, Puerto Rico Earthquake Sequence [Poster]
Type: Poster
Date: 4/30/2020
Time: 08:00 AM
Room: Ballroom
Description: 

In 2017, Hurricane Maria devasted significant portions of the Caribbean, including Puerto Rico. Both the Puerto Rico Seismic Network (PRSN) and the Puerto Rico Strong Motion Program (PRSMP) experienced significant damage to their stations, impacting their ability to provide timely earthquake information.

Congress appropriated funds in 2018 to assist with the recovery from Hurricane Maria. The USGS received funds to support the PRSN and PRSMP on seismic network upgrades and data center improvements, to rebuild damaged Global Seismographic Network (GSN) stations on Turks and Caicos Islands, Barbuda and Puerto Rico and to rebuild the Geomagnetic Observatory on Puerto Rico. These funds were also used to support installation of the Earthworm/ANSS Quake Monitoring System (AQMS) software to improve regional earthquake monitoring by the PRSN.

In this presentation, we describe the installation of the PRSN Earthworm/AQMS. This installation is based on a 64-bit Linux system using a Postgres database and is running in parallel with a NOAA Earlybird system. The Earthworm/AQMS system has been running since August 2019 with minor efforts to set-up subnet triggering and otherwise tune the system for operation. We evaluate the performance of Earthworm/AQMS for the 2020 Southwestern Puerto Rico sequence and compare results with those of the Earlybird system and the PRSN final location.

Presenting Author: Mariana Olivencia

Authors