An Updated Vs30 Map for California with Geologic and Topographic Constraints

This data release provides a map of the time-averaged shear-wave velocity in the upper 30 m (Vs30) for California using the method described by Thompson and others (2014). There are two adjustments to the algorithm described by Thompson and others (2014), which is built on the geology-based Vs30 map by Wills and Clahan (2006). In this data release, we use the Wills and others (2015) updated geology-based Vs30 map. The second change is that we have adjusted the kriging procedure so that measured Vs30 values do not affect the predictions across distinctly different geologic units.

Data e Risorse

Campo Valore
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5a5fa029e4b06e28e9bfc43a
metadata_type geospatial
modified 20200818
old-spatial -124.501041667, 32.498958335, -114.098958335, 42.101041667
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 1cfa65e46e59211c7ea063578748fdb23fde4ca3
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-124.501041667, 32.498958335], [-124.501041667, 42.101041667], [ -114.098958335, 42.101041667], [ -114.098958335, 32.498958335], [-124.501041667, 32.498958335]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • california
  • ckan
  • earth-science
  • earthquake-hazard
  • earthquake-hazards-program
  • geo
  • geologic-hazards-science-center
  • geophysics
  • geoss
  • ghsc
  • national
  • north-america
  • seismic-hazard
  • seismology
  • tectonic
  • united-states
  • usgs
  • usgs-5a5fa029e4b06e28e9bfc43a
isopen False
license_id notspecified
license_title License not specified
maintainer Eric M Thompson
maintainer_email emthompson@usgs.gov
metadata_created 2025-11-22T14:14:24.364447
metadata_modified 2025-11-22T14:14:24.364452
notes This data release provides a map of the time-averaged shear-wave velocity in the upper 30 m (Vs30) for California using the method described by Thompson and others (2014). There are two adjustments to the algorithm described by Thompson and others (2014), which is built on the geology-based Vs30 map by Wills and Clahan (2006). In this data release, we use the Wills and others (2015) updated geology-based Vs30 map. The second change is that we have adjusted the kriging procedure so that measured Vs30 values do not affect the predictions across distinctly different geologic units.
num_resources 2
num_tags 20
title An Updated Vs30 Map for California with Geologic and Topographic Constraints