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Service Description: 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.
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Description: 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.
Service Item Id: a092865bb0b646d084ce9b0abbbe0931
Copyright Text: C.J. Wills, C.I. Gutierrez, F.G. Perez, and D.B. Branum, California Geological Survey, California Department of Conservation.
Spatial Reference:
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- Spatial Reference: 102100
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Spatial Reference: 102100
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Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Shear-wave Velocity in Upper 30m of Surficial Geology (Vs30)
Author:
Comments: 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.
Subject: Simplified geologic units that have been correlated to the time-averaged seismic shear-wave velocity in the upper 30 meters of the earths surface (Vs30).
Category:
Keywords: transportation,society,structure,California,Earthquake,Seismic,Seismology,Hazard,Ground Motion,Velocity,Geology,California Geological Survey,California Department of Conservation,geoscientificInformation,planningCadastre,health,environment,utilitiesCommunication,California Natural Resources Agency,CAOpenData,CGS,Geologic Hazards,California Geology,DOC,CNRA,transportation,society,structure,California,Earthquake,Seismic,Seismology,Hazard,Ground Motion,Velocity,California,Geology,California Geological Survey,California Department of Conservation,geoscientificInformation,planningCadastre,health,environment,utilitiesCommunication,California Natural Resources Agency,CAOpenData,CGS
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Supported Query Formats: JSON, geoJSON, PBF
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Supports Datum Transformation: true
Child Resources:
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