Components of the USGS National Crustal Model (ver. 2.0, September 2025)
Seismic hazard assessments depend on an accurate prediction of ground motion, which in turn depends on a base knowledge of three-dimensional variations in density, seismic velocity, and attenuation. The datasets here are components of a National Crustal Model that couples geologic characteristics and geophysical parameters using a physical theoretical foundation combined with measured data for calibration. The model is intended to be internally consistent and seamless on a national scale; care is also taken to maximize consistency with existing regional models. An initial version of the model components are defined for the western U.S. on a 1-km grid. While the current focus of this effort is on improving estimates of site response in seismic hazard analysis, this model can benefit other fields of research.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
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|
| contactPoint |
{
"fn": "Oliver S. Boyd",
"@type": "vcard:Contact",
"hasEmail": "mailto:olboyd@usgs.gov"
}
|
| description | Seismic hazard assessments depend on an accurate prediction of ground motion, which in turn depends on a base knowledge of three-dimensional variations in density, seismic velocity, and attenuation. The datasets here are components of a National Crustal Model that couples geologic characteristics and geophysical parameters using a physical theoretical foundation combined with measured data for calibration. The model is intended to be internally consistent and seamless on a national scale; care is also taken to maximize consistency with existing regional models. An initial version of the model components are defined for the western U.S. on a 1-km grid. While the current focus of this effort is on improving estimates of site response in seismic hazard analysis, this model can benefit other fields of research. |
| distribution |
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| identifier | http://datainventory.doi.gov/id/dataset/USGS_5b046c6ce4b0d8682b96353a |
| keyword |
[
"Arizona",
"CGGSC",
"California",
"Colorado",
"Earthquake Hazards",
"GHSC",
"Geologic Hazards Science Center",
"Geology, Geophysics, and Geochemistry Science Center",
"Idaho",
"Kansas",
"Montana",
"National Crustal Model",
"Nebraska",
"Nevada",
"New Mexico",
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"Oklahoma",
"Oregon",
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"geoscientificInformation",
"gravity",
"hazards",
"regional study",
"sediments",
"three-dimensional mapping",
"unconsolidated sediments"
]
|
| modified | 2025-09-03T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
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|
| spatial | -124.7100, 21.6900, -99.4800, 49.0000 |
| theme |
[
"Geospatial"
]
|
| title | Components of the USGS National Crustal Model (ver. 2.0, September 2025) |
