1.4 Hawaii 2021.R2 hazard curves and uniform-hazard ground motion data
These hazard data, labeled Hawaii.2021.R2, accompany revisions to the 2023 50-state National Seismic Hazard Model (NSHM; Petersen and others, 2024 and, for the state of Hawaii, Petersen and others, 2022) as documented in Powers and others (2026). This dataset supersedes the data releases of Rukstales and others (2021) and Petersen and others (2023) (Hawaii.2021.R1). In this revision, we account for full catalog rates in Hawaii for all periods and site classes. This is consistent with the methodology used for the 2023 CONUS and Alaska NSHMs, as well as the "research model" for two periods and one site class that accompanied the original 2021 Hawaii NSHM (Hawaii.2021.R1), which instead used earthquake rates derived from a declustered catalog.
This dataset contains probabilistic seismic hazard curves and uniform-hazard ground motion values calculated for a grid of points with a spacing of 0.02 degrees in latitude and longitude for the state of Hawaii, and the Hawaii test sites, using the 2023 National Seismic Hazard Model (NSHM) for the state of Hawaii version 2.1.0 (with nshmp-haz v. 2.6.5 and nshmp-lib v. 1.7.3). The dataset includes (1) long-term, time-independent mean hazard curves (full and truncated) for peak ground velocity (PGV), peak ground acceleration (PGA), and spectral accelerations at 21 spectral periods from 0.01 to 10 seconds spectral accelerations, with a 5% damped response, and (2) uniform-hazard ground motion values for 2, 5, and 10% in 50 years probability of exceedance (PE) (corresponding to 2,475, 975, and 475-year return periods, respectively). Results are provided for Vs30s (time-averaged shear-wave velocity [VS] in the upper 30 m) of 1500, 1080, 760, 530, 365, 260, 185, and 150 m/s, representing the National Earthquake Hazards Reduction Program site conditions A, B, BC, C, CD, D, DE and E, respectively (Building Seismic Safety Council, 2020).
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Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Jason M Altekruse", "@type": "vcard:Contact", "hasEmail": "mailto:jaltekruse@usgs.gov" } |
| description | These hazard data, labeled Hawaii.2021.R2, accompany revisions to the 2023 50-state National Seismic Hazard Model (NSHM; Petersen and others, 2024 and, for the state of Hawaii, Petersen and others, 2022) as documented in Powers and others (2026). This dataset supersedes the data releases of Rukstales and others (2021) and Petersen and others (2023) (Hawaii.2021.R1). In this revision, we account for full catalog rates in Hawaii for all periods and site classes. This is consistent with the methodology used for the 2023 CONUS and Alaska NSHMs, as well as the "research model" for two periods and one site class that accompanied the original 2021 Hawaii NSHM (Hawaii.2021.R1), which instead used earthquake rates derived from a declustered catalog. This dataset contains probabilistic seismic hazard curves and uniform-hazard ground motion values calculated for a grid of points with a spacing of 0.02 degrees in latitude and longitude for the state of Hawaii, and the Hawaii test sites, using the 2023 National Seismic Hazard Model (NSHM) for the state of Hawaii version 2.1.0 (with nshmp-haz v. 2.6.5 and nshmp-lib v. 1.7.3). The dataset includes (1) long-term, time-independent mean hazard curves (full and truncated) for peak ground velocity (PGV), peak ground acceleration (PGA), and spectral accelerations at 21 spectral periods from 0.01 to 10 seconds spectral accelerations, with a 5% damped response, and (2) uniform-hazard ground motion values for 2, 5, and 10% in 50 years probability of exceedance (PE) (corresponding to 2,475, 975, and 475-year return periods, respectively). Results are provided for Vs30s (time-averaged shear-wave velocity [VS] in the upper 30 m) of 1500, 1080, 760, 530, 365, 260, 185, and 150 m/s, representing the National Earthquake Hazards Reduction Program site conditions A, B, BC, C, CD, D, DE and E, respectively (Building Seismic Safety Council, 2020). |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P14VGAV4", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6802a4fad4be0210cdcc996b.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_6802a4fad4be0210cdcc996b |
| keyword |
[ "Hawaii", "NSHM", "NSHMP", "National Seismic Hazard Map", "National Seismic Hazard Model", "National Seismic Hazard Model Project", "USA", "USGS:6802a4fad4be0210cdcc996b", "United States", "earthquakes", "hazards", "seismology" ] |
| modified | 2026-08-10T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -160.3800, 18.7000, -154.4400, 22.3800 |
| theme |
[ "geospatial" ] |
| title | 1.4 Hawaii 2021.R2 hazard curves and uniform-hazard ground motion data |
