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

Identification Information:
Citation:
Citation Information:
Publication Date: 20160930
Title: CGS Map Sheet 48: Shear-wave Velocity in Upper 30m of Surficial Geology (Vs30)
Edition: v3.0
Geospatial Data Presentation Form: vector digital data
Other Citation Details: Reference: Wills, C.J., C.I. Gutierrez, F.G. Perez, and D.M. Branum (2015). A next-generation Vs30 map for California based on geology and topography, Bulletin of the Seismological Society of America, 105, no 6, 3083-3091, doi: 10.1785/0120150105.
Online Linkage: https://gis.conservation.ca.gov/server/rest/services/CGS/MS48_Vs30/MapServer
Description:
Abstract: 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.
Purpose: Disaster recovery planning
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 2015
Currentness Reference: California (statewide)
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: 0.0
East Bounding Coordinate: 0.0
North Bounding Coordinate: 0.0
South Bounding Coordinate: 0.0
Keywords:
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: transportation
Theme Keyword: society
Theme Keyword: structure
Theme Keyword: geoscientificInformation
Theme Keyword: planningCadastre
Theme Keyword: health
Theme Keyword: environment
Theme Keyword: utilitiesCommunication
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Earthquake
Theme Keyword: Seismic
Theme Keyword: Seismology
Theme Keyword: Hazard
Theme Keyword: Ground Motion
Theme Keyword: Velocity
Theme Keyword: California
Theme Keyword: Geology
Theme Keyword: California Geological Survey
Theme Keyword: California Department of Conservation
Place:
Place Keyword Thesaurus: None
Place Keyword: California
Access Constraints: Other Constraints
Use Constraints: "Access Constraints: None Use Constraints: Disclaimer: The State of California and the Department of Conservation make no representations or warranties regarding the accuracy of the data from which these maps were derived. Neither the State nor the Department shall be liable under any circumstances for direct, indirect, special, incidental or consequential damages with respect to any claim by any user or any third party on account of or arising from the use of the map."
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Department of Conservation, California Geological Survey
Contact Address:
Address Type: mailing and physical
Address: 715 P Street MS 1900
City: Sacramento
State or Province: CA
Postal Code: 95814
Country: US
Contact Voice Telephone: 916-323-8553
Contact Electronic Mail Address: gis@conservation.ca.gov
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: California Geological Survey
Contact Person: Chris Wills
Contact Address:
Address Type: mailing and physical
Address: 715 P Street MS 1900
City: Sacramento
State or Province: CA
Postal Code: 95814
Country: US
Contact Voice Telephone: 916-323-8553
Contact Electronic Mail Address: Chris.Wills@conservation.ca.gov
Data Set Credit: C.J. Wills, C.I. Gutierrez, F.G. Perez, and D.B. Branum, California Geological Survey, California Department of Conservation.
Native Data Set Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.2.2.3552
Spatial Data Organization Information:
Direct Spatial Reference Method: Vector
Point and Vector Object Information:
SDTS Terms Description:
SDTS Point and Vector Object Type: GT-polygon composed of chains
Point and Vector Object Count: 75746
Entity and Attribute Information:
Detailed Description:
Entity Type:
Entity Type Label: Vs30_ShearWaveVelocity2015
Entity Type Definition: 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).
Entity Type Definition Source: California Geological Survey
Attribute:
Attribute Label: OBJECTID
Attribute Definition: Internal feature number.
Attribute Definition Source: Esri
Attribute Domain Values:
Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute Label: Shape
Attribute Definition: Feature geometry.
Attribute Definition Source: Esri
Attribute Domain Values:
Unrepresentable Domain: Coordinates defining the features.
Attribute:
Attribute Label: Geologic_U
Attribute Definition: Seventeen (17) simplified geologic unit categories derived for the purposes of determining shear-wave velocity, using combined geologic/slope unit as described in Wills et al. 2015.
Attribute Definition Source: C.J. Wills, C.I. Gutierrez, F.G. Perez, and D.B. Branum
Attribute:
Attribute Label: Vs30_Mean
Attribute Definition: Time-averaged seismic shear-wave velocity in the upper 30 m (Vs30) of earth materials.
Attribute Definition Source: C.J. Wills, C.I. Gutierrez, F.G. Perez, and D.B. Branum
Attribute:
Attribute Label: Shape_Leng
Attribute Definition: Length of feature in internal units.
Attribute Definition Source: Esri
Attribute:
Attribute Label: Shape.STArea()
Attribute:
Attribute Label: Shape.STLength()
Overview Description:
Entity and Attribute Overview: 
Fields:
OBJECTID ( type: esriFieldTypeOID, alias: FID )
Geologic_U ( type: esriFieldTypeString, alias: Geologic_U, length: 56 )
Vs30_Mean ( type: esriFieldTypeDouble, alias: Vs30_Mean )
Shape_Leng ( type: esriFieldTypeDouble, alias: Shape_Leng )
Shape ( type: esriFieldTypeGeometry, alias: Shape )
Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )
Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: California Geological Survey
Contact Person: Chris Wills
Contact Address:
Address Type: mailing and physical
Address: 715 P Street MS 1900
City: Sacramento
State or Province: CA
Postal Code: 95814
Country: US
Contact Voice Telephone: 916-323-8553
Contact Electronic Mail Address: Chris.Wills@conservation.ca.gov
Distribution Liability: See access and use constraints information.
Metadata Reference Information:
Metadata Date: 20150714
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: California Geological Survey, California Department of Conservation
Contact Address:
Address Type: mailing and physical
Address: 715 P Street MS 1900
City: Sacramento
State or Province: CA
Postal Code: 95814
Country: US
Contact Voice Telephone: 916-445-1825
Contact Electronic Mail Address: cgshq@consrv.ca.gov
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time