Puerto Rico and the US Virgin Islands, 2003
This page contains probabilistic seismic hazard results for Puerto Rico and the U.S. Virgin Islands and accompanying documentation. Six maps are presented: peak ground acceleration (pga), 5-Hz spectral acceleration, and 1-Hz spectral acceleration (5% damping), each for 10%- and 2%-in-fifty-years probability of exceedance.
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DOCUMENTATION [Maps] [ Gridded Values]
Documentation for 2003 USGS Seismic Hazard Maps for Puerto Rico and the U. S. Virgin Islands by C. S. Mueller, A. D. Frankel, M. D. Petersen, and E. V. Leyendecker HTML
MAPS [Gridded Values] [Documentation]
| 50 Year Return Period Maps | ||
|---|---|---|
| Spectral Acceleration (%g) | Probability of Exceedance | |
| 2% | 10% | |
| Peak Ground Acceleration | [GIF | PDF | PS] | [GIF | PDF | PS] |
| 0.2 Second | [GIF | PDF | PS] | [GIF | PDF | PS] |
| 1.0 Second | [GIF | PDF | PS] | [GIF | PDF | PS] |
PGA Hazard Curves for Selected Sites
- San Juan - GIF, PDF, PS
- Mayaguez - GIF, PDF, PS
- Ponce - GIF, PDF, PS
- Charlotte Amalie - GIF, PDF, PS
- Christiansted - GIF, PDF, PS
- Southwest Puerto Rico (lat.=18.0, lon.=-67.0) - GIF, PDF, PS
GRIDDED GROUND-MOTION AND HAZARD-CURVE VALUES [Maps] [ Documentation]
|
ASCII files of gridded probabilistic ground-motion values: lon, lat, ground motion value (%g) (%g) PE = probability of exceedance, PGA = peak ground acceleration, SA = spectral acceleration (5% damped) |
|
| File sizes = approximately 500 KB each | |
| PGA with 10% PE in 50 yrs | PGA with 2% PE in 50 yrs |
| 0.2 sec SA with 10% PE in 50 yrs | 0.2 sec SA with 2% PE in 50 yrs |
| 0.3 sec SA with 10% PE in 50 yrs | 0.3 sec SA with 2% PE in 50 yrs |
| 1.0 sec SA with 10% PE in 50 yrs | 1.0 sec SA with 2% PE in 50 yrs |
|
ASCII files of hazard curve values: ground motion levels (g) followed by gridded hazard curve values (annual rate of exceedance) PE = probability of exceedance, PGA = peak ground acceleration, SA = spectral acceleration (5% damped) |
|
| File sizes = approximately 3 MB each | |
| PGA Hazard Curve | 0.2 sec Hazard Curve |
| 0.3 sec Hazard Curve | 1.0 sec Hazard Curve |
Although these maps have been used by the U.S. Geological Survey, no warranty, expressed or implied is made by the USGS as to the accuracy of the maps and related material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith.
