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Uprm Contributions to the 2025 Update of the Puerto Rico Seismic Hazard Map

Description: 

A collaborative work between the Geology and Civil Engineering Departments
at the University of Puerto Rico - Mayaguez (UPRM) have formed a workgroup
to deliver products to be included in the upcoming realization of the Puerto
Rico and Virgin Islands Seismic Hazard Map. The latest revision of a Seismic
Hazard Map for the island of Puerto Rico dates back to 2003 when the US Geological Survey (USGS)
used available gridded seismic hazard curve data, gridded ground motion data,
and mapped gridded ground motion values to produce the Puerto Rico and U.S.
Virgin Island (PRVI) Seismic Hazard Model (Mueller et al., 2010).
This year marks twenty years since that model was published and new
datasets can be included in a new realization of an updated Seismic Hazard Model
for PRVI. Funding from the USGS have been granted to the UPRM workgroup
for two years, however, products delivered during the first year are expected
to be included in the new version. These include updates to the seismicity
catalog, and an updated velocity vector field obtained from continuous and permanent
GPS sites in PRVI that span more than twenty years, and a detailed topography analysis
to identify the location of possible active seismic experiments and paleoseismic
trenches. The products from the second year include opening two paleoseismic trenches
in southwestern Puerto Rico to explore possible active faults in association to
the 2020 Southwestern Puerto Rico seismic sequence.

Session: 2025 Puerto Rico and the U.S. Virgin Islands National Seismic Hazard Model Update [Poster]

Type: Poster

Date: 4/18/2023

Presentation Time: 08:00 AM (local time)

Presenting Author: Alberto M. Lopez

Student Presenter: No

Invited Presentation: 

Authors