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Data Release for the 2023 U.S. 50-State National Seismic Hazard Model - Overview This data release contains data sets associated with the 2023 50-State National Seismic Hazard Model Update. The 2023 50-State National Seimsic Hazard Model (NSHM) Update includes an update to the NSHMs for the conterminous U.S (CONUS, last updated in 2018), Alaska (AK, last updated in 2007), and Hawaii (last updated in 2001). Data sets include inputs like seismicity catalogs used as input to the smoothed seismicity model and updated induced seismicity zone polygons in the central and eastern U.S., as well as outputs like hazard curves and uniform-hazard ground motion values. Plots of selected data sets are also included. The data sets provided here are primarily for the 2023 CONUS NHSM and 2023 AK NSHM. Additional... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alaska, Conterminous United States, Earthquake, Hawaii, Hazard, All tags... Map Service, National Seismic Hazard Model, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Seismic, Seismology, USGS Science Data Catalog (SDC), earthquake hazard, geophysics, seismology, Fewer tags Data Release for the 2021 Update of the U.S. National Seismic Hazard Model for Hawaii The 2021 update of the U.S. National Seismic Hazard Model for Hawaii succeeds the twenty-year-old former model by incorporating new data and modeling techniques to improve the ground shaking forecasts. Output from the model includes probabilistic seismic hazard curves calculated for a 0.02° x 0.02° grid of latitude/longitude locations across Hawaii. The new model provides an expanded suite of hazard curves for twenty-three different ground motion intensity measures, including PGA, PGV, and spectral accelerations between 0.01 and 10 second, and for eight separate soil site classes (VS30 = 1500 m/sec to 150 m/sec), representing NEHRP site classes A/B to E. In addition, gridded uniform- hazard data are provided... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics, Hawaii, National Seismic Hazard Model, Seismology, USGS Science Data Catalog (SDC), All tags... earthquake hazard, Fewer tags