NSHMP hazard curve data are available in a variety of file formats.
To access the data programmatically,
construct url queries in the following format:
http://geohazards.usgs.gov/hazardtool/application.phpcurves.php?
format=2&lat=35&lon=-120&site=760&period=0p00
- Query must specify lat and lon.
- Query may optionally specify an output format:
- 0 for XML (default)
- 1 for JSON
- 2 for CSV
- Query may optionally specify site type and spectral period
but must specify both together.
- Site options:
- 2000 for Site Class A
- 1150 for Site Class B
- 760 for B/C Boundary
- 537 for Site Class C
- 360 for C/D Boundary
- 259 for Site Class D
- 180 for D/E Boundary
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- Period options:
- 0p00 for Peak Ground Acceleration
- 0p10 for 0.1 Second (10.0 Hz)
- 0p20 for 0.2 Second (5.0 Hz)
- 0p30 for 0.3 Second (3.33 Hz)
- 0p50 for 0.5 Second (2.0 Hz)
- 0p75 for 0.75 Second (1.33 Hz)
- 1p00 for 1.0 Second (1.0 Hz)
- 2p00 for 2.0 Second (0.5 Hz)
- 3p00 for 3.0 Second (0.33 Hz)
- 4p00 for 4.0 Second (0.25 Hz)
- 5p00 for 5.0 Second (0.20 Hz)
- Flat files of the data returned by this web application are available
here
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