Filters: Tags: PGA (X) > partyWithName: GHSC Data Steward (X)

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Geophysical Site Characterization of Bay Area Seismic Monitoring Stations: Vs-depth Profiling, NEHRP Site Classifications, and Linear Shallow Seismic Amplification Functions New active-source shallow seismic (shear-wave and acoustic-wave) measurements were obtained at 18 prioritized seismic monitoring station locations in the north San Francisco Bay area to measure site-specific ground motion amplification effects, soil depth, depth to bedrock (Z1.0 Vs=1 km/s), calculate site specific velocity-depth profiles and Vs30, and develop NEHRP site classifications for each location. This study was led by Principal Investigators Jamey Turner, Cooper Brossy, and Daniel O’Connell and field data were acquired by Glendon Adams and Lincoln Steele. Seismic monitoring sites that recorded high PGA values during the M6.0 Napa earthquake, proximal to higher population densities, and sites recommended... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... NEHRP, Napa, National Earthquake Hazards Reduction Program, PGA, PGV, San Francisco Bay, USGS, United States, earth science, earthquake hazard, geophysical survey, geophysics, peak ground acceleration, peak ground velocity, seismic hazards, seismic monitoring, seismic velocity, seismology, shear wave velocity, tectonophysics, Fewer tags 04. Uniform-hazard ground motion maps for the conterminous U.S., Alaska, and Hawaii This data set contains maps and shapefiles of uniform-hazard ground motion values calculated for a grid of points with a spacing of 0.2° in latitude and longitude over the conterminous U.S and Alaska, and 0.02° over Hawaii, using the 2023 National Seismic Hazard Model. 2%, 5% and 10% in 50-year probability of exceedance values are shown for peak ground acceleration (PGA), and 0.2, 1, and 5 second spectral acceleration for VS30 = 760 and 260 m/s, representing the National Earthquake Hazards Reduction Program site conditions B/C and D, respectively. Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Class B/C, Class D, Conterminous United States (CONUS), Earthquake, Hazard, All tags... NSHM, PGA, PSHA, Seismic, Fewer tags 03. Hazard curves and uniform-hazard ground motion data for the conterminous U.S. and Alaska This data set represents probabilisitic seismic hazard curves and uniform-hazard ground motion values calculated for a grid of points with a spacing of 0.2 degrees in latitude and longitude over the conterminous U.S. (CONUS) and Alaska (AK) using the 2023 National Seismic Hazard Model. CONUS The data sets includes (1) probabilistic seismic hazard curves (full and truncated) for two peak parameters, peak ground velocity (PGV) and peak ground acceleration (PGA), and pseudo-spectral accelerations at 21 oscillator periods between 0.01 and 10s, 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)... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: A/B site class boundary, Alaska (AK), B/C site class boundary, C/D site class boundary, Class B, All tags... Class C, Class D, Class E, Conterminous United States (CONUS), D/E site class boundary, Earthquake, Hazard, NSHM, PGA, PGV, Seismic, seismic hazard curves, uniform-hazard ground motion values, Fewer tags 05. Multiple period response spectra for 160 conterminous U.S. test sites This data set represents multiple period response spectra (MPRS) results for 160 test sites for the conterminous U.S (CONUS) using the 2023 National Seismic Hazard Model. The data sets includes (1) probabilistic seismic hazard curves (full and truncated) for peak ground velocity (PGV), peak ground acceleration (PGA), and 21 spectra periods from 0.01 to 10 seconds spectra acceleration 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) and 1% in 100 year PE (corresponding to a 10,000-year return period) for each of the 160 test sites. Results are provided for VS30 = 1500, 1080, 760, 530, 365,... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Class A, Class B, Class B/C, Class C, Class C/D, All tags... Class D, Class D/E, Class E, Conterminous United States (CONUS), Earthquake, Hazard, MPRS, NSHM, PGA, PGV, PSHA, Seismic, seismic hazard curves, uniform-hazard ground motion values, Fewer tags