Seismic hazard maps for Haiti

Earthquake Spectra
By: , and 

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Abstract

We have produced probabilistic seismic hazard maps of Haiti for peak ground acceleration and response spectral accelerations that include the hazard from the major crustal faults, subduction zones, and background earthquakes. The hazard from the Enriquillo-Plantain Garden, Septentrional, and Matheux-Neiba fault zones was estimated using fault slip rates determined from GPS measurements. The hazard from the subduction zones along the northern and southeastern coasts of Hispaniola was calculated from slip rates derived from GPS data and the overall plate motion. Hazard maps were made for a firm-rock site condition and for a grid of shallow shear-wave velocities estimated from topographic slope. The maps show substantial hazard throughout Haiti, with the highest hazard in Haiti along the Enriquillo-Plantain Garden and Septentrional fault zones. The Matheux-Neiba Fault exhibits high hazard in the maps for 2% probability of exceedance in 50 years, although its slip rate is poorly constrained.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Seismic hazard maps for Haiti
Series title Earthquake Spectra
DOI 10.1193/1.3631016
Volume 27
Issue S1
Year Published 2011
Language English
Publisher EERI
Publisher location Oakland, CA
Contributing office(s) Earthquake Science Center
Description 39 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Earthquake Spectra
First page S23
Last page S41
Country Haiti