Datasets > Polygon data > United States > 2010-2014

Seismic Hazard Map for the United States

National Atlas of the United States · 2012 Full Details

Georeferenced: false

Full Details

Title
Seismic Hazard Map for the United States
Description
This polygon shapefile represents seismic hazards 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, 0.05 degrees for the conterminous United States, and 0.02 degrees for Hawaii. This layer is part of the 1997-2014 edition National Atlas of the United States., This map summarizes the quantitative information, available from geologic and geophysical sources, about seismic ground motion hazard in the United States. The data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:2,000,000-scale data. No responsibility is assumed by the U.S. Geological Survey or the National Atlas of the United States in the use of these data., This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Creator
Rukstales, Kenneth S. (compiler)
Publisher
National Atlas of the United States
Subject
Earthquake zones, Earthquake hazard analysis, Earthquakes, Geoscientific Information, Economy
Temporal Coverage
2012
Date Issued
2012
Rights
This item is in the public domain. There are no restrictions on use.
Rights Holder
This work is in the Public Domain, meaning that it is not subject to copyright.
Access Rights
Public
Format
Shapefile
Language
English
Date Added
October 01, 2025

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Links

Cite and Reference

  • Citation
    Rukstales, Kenneth S. (compiler) (2012). Seismic Hazard Map for the United States. National Atlas of the United States. https://purl.stanford.edu/rm034qp5477 (dataset)
  • BTAA Geoportal Link

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