Bibliographic Details
| Title: |
Present-day shortening in Southern Haiti from GPS measurements and implications for seismic hazard. |
| Authors: |
Symithe, Steeve1, Calais, Eric2 eric.calais@ens.fr |
| Source: |
Tectonophysics. Jun2016, Vol. 679, p117-124. 8p. |
| Subjects: |
Haiti Earthquake, Haiti, 2010, Earthquake hazard analysis, Global Positioning System, Urbanization, Strains & stresses (Mechanics) |
| Abstract: |
The ~ 3 M inhabitant capital region of Haiti, severely affected by the devastating January 12, 2010, M7.0 earthquake, continues to expand at a fast rate. Accurate characterization of regional earthquake sources is key to inform urban development and construction practices through improved regional seismic hazard estimates. Here we use a recently updated Global Positioning System (GPS) data set to show that seismogenic strain accumulation in southern Haiti involves an overlooked component of shortening on a south-dipping reverse fault along the southern edge of the Cul-de-Sac basin, in addition to the well-known component of left-lateral strike-slip motion. This tectonic model implies that ground shaking may be twice that expected if the major fault was purely strike-slip, as assumed in the current seismic hazard map for the region. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
