Seismic Ground Motion Hazards with 10 Percent Probability

Metadata Updated: February 14, 2019

This map layer shows seismic hazard in the United States. The data represent a model showing the probability that ground motion will reach a certain level. This map layer shows peak horizontal ground acceleration (the fastest measured change in speed, for a particle at ground level that is moving horizontally due to an earthquake) with a 10% probability of exceedance in 50 years. Values are given in %g, where g is acceleration due to gravity, or 9.8 meters/second^2. The lines of equal hazard, which are the lines between the polygons, were determined by interpolating from a grid of equally spaced points in latitude and longitude. Each point was weighted based on the seismic hazard at that location. The grid spacing is 0.1 degrees for Alaska and the conterminous United States, 0.02 degrees for Hawaii, and 0.05 for Puerto Rico and the U.S. Virgin Islands.

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work
Continental United States, Alaska, Hawaii, Puerto Rico, U.S. Virgin Islands, portions of Canada & Mexico

Downloads & Resources

Dates

Metadata Created Date May 27, 2016
Metadata Updated Date February 14, 2019

Metadata Source

Harvested from DHS datajson source

Additional Metadata

Resource Type Dataset
Metadata Created Date May 27, 2016
Metadata Updated Date February 14, 2019
Publisher Under Secretary / Management
Unique Identifier 2699
Maintainer
HIFLD HIFLD (MGMT)
Maintainer Email
Public Access Level public
Bureau Code 024:10
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Harvest Object Id bf798c6f-af6b-46d8-8f77-46f94b6d19c3
Harvest Source Id bd9faa28-bbb6-45f3-a4f0-d302a4a61802
Harvest Source Title DHS datajson source
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-03T04:00:00.000Z
Program Code 024:000
Rights Continental United States, Alaska, Hawaii, Puerto Rico, U.S. Virgin Islands, portions of Canada & Mexico
Source Datajson Identifier True
Source Hash 12f8a8842d71fd81025cdee225aad47bc3cdce54
Source Schema Version 1.1

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