CGS Map Sheet 48: Shear-wave Velocity in Upper 30m of Surficial Geology (Vs30)

This dataset represents simplified geologic units that have been correlated to the time-averaged seismic shear-wave velocity in the upper 30 meters of the earth’s surface (Vs30). The geologic units were compiled from published maps that range in scale from 1:250,000 to 1:24,000, along with a system for subdividing younger alluvium based on surface slope. More information can be obtained from the associated article published in the Bulletin of the Seismological Society of America: Wills, C.J., Gutierrez, C.I., Perez, F.G., and Branum, D.B., 2015, A next-generation Vs30 map for California based on geology and topography: Bulletin of the Seismological Society of America.

Data e Risorse

Campo Valore
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
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catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier 834be811-be3d-433c-b816-23f03ab77144
issued 2017-05-24T22:50:17.000Z
modified 2016-09-30T00:00:00.000Z
publisher California Department of Conservation
resource-type Dataset
source_datajson_identifier true
source_hash c472522e732c93696856882708661cd5c3e70144
source_schema_version 1.1
theme {"Natural Resources"}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • california
  • california-department-of-conservation
  • california-geological-survey
  • california-geology
  • california-natural-resources-agency
  • caopendata
  • cgs
  • ckan
  • cnra
  • doc
  • earthquake
  • environment
  • geo
  • geologic-hazards
  • geology
  • geoscientificinformation
  • geoss
  • ground-motion
  • hazard
  • health
  • national
  • north-america
  • planningcadastre
  • seismic
  • seismology
  • society
  • structure
  • transportation
  • united-states
  • utilitiescommunication
  • velocity
isopen False
license_id notspecified
license_title License not specified
maintainer gis_cadoc
maintainer_email gis@conservation.ca.gov
metadata_created 2025-11-22T00:48:50.467409
metadata_modified 2025-11-22T00:48:50.467413
notes This dataset represents simplified geologic units that have been correlated to the time-averaged seismic shear-wave velocity in the upper 30 meters of the earth’s surface (Vs30). The geologic units were compiled from published maps that range in scale from 1:250,000 to 1:24,000, along with a system for subdividing younger alluvium based on surface slope. More information can be obtained from the associated article published in the Bulletin of the Seismological Society of America: Wills, C.J., Gutierrez, C.I., Perez, F.G., and Branum, D.B., 2015, A next-generation Vs30 map for California based on geology and topography: Bulletin of the Seismological Society of America.
num_resources 6
num_tags 33
title CGS Map Sheet 48: Shear-wave Velocity in Upper 30m of Surficial Geology (Vs30)