U.S. Geological Survey 20250822 Raster Digital Data Set Reston, VA U.S. Geological Survey https://doi.org/10.5066/P1NV6UNM Heath, D.C. Wald, D. J. Worden, C.B. Thompson, E.M 20200801 Publication (Journal) Earthquake Spectra 36(3) https://dx.doi.org/10.1177/8755293020911137 EERI This data release provides the global mosaic of the time-averaged shear-wave velocity in the upper 30 m (Vs30) described by Heath and others (2020). This map uses the Wald and Allen (2007) slope-based Vs30 as the basemap, and regional take precedence where they are available. See abstract none 20250225 publication date Complete occasional -180.0000 180.0000 84.0042 -56.0042 USGS Thesaurus USGS Geologic Hazards Science Center GHSC Earthquake Hazards Program earthquake hazard seismology seismic hazard earth science geophysics tectonic USGS Metadata Identifier USGS:67be4ac3d34e8876fcbfbd89 GHSC Global World USGS Thesaurus current none none Eric M Thompson U.S. Geological Survey, Earthquake Hazards Program Research Geophysicist Mailing and Physical

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Golden Colorado 80401 USA 303-273-8500 emthompson@usgs.gov Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5 (Build 6491) Service Pack N/A (Build N/A) No formal attribute accuracy tests were conducted No formal logical accuracy tests were conducted Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted The processing steps are described in detail in https://doi.org/10.1177/8755293020911137. 2025 Raster Grid Cell 16801 43201 1 0.008333333333330 0.008333333333330 Decimal seconds D_WGS_1984 WGS_1984 6378137.0 298.257223563 Attribute Table Table containing attribute information associated with the data set. Producer defined Value Time-averaged shear-wave velocity in the upper 30 meters Producer defined 83.60977935791016 2197 m/s ScienceBase U.S. Geological Survey - ScienceBase Mailing and Physical

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Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. 20250822 GHSC Data Steward U.S. Geological Survey, Geologic Hazards Science Center Open Data Policy coordinator Mailing and Physical

1711 Illinois Street

Golden Colorado 80401 USA 303-273-8500 ghsc_metadata@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998