Core logger data from vibracores collected offshore San Francisco, California, during field activity 2019-649-FA from 2019-10-11 to 2019-10-18

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Thomas D. Lorenson
Originator: Ray W. Sliter
Originator: James E. Conrad
Originator: Antoinette G. Papesh
Originator: Jonathan A. Warrick
Publication_Date: 2021
Title:
Core logger data from vibracores collected offshore San Francisco, California, during field activity 2019-649-FA from 2019-10-11 to 2019-10-18
Geospatial_Data_Presentation_Form: comma-delimited text
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9LBG9H5
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9LBG9H5
Larger_Work_Citation:
Citation_Information:
Originator: Ray W. Sliter
Originator: James E. Conrad
Originator: Thomas D. Lorenson
Originator: Antoinette G. Papesh
Originator: Alicia F. Balster-Gee
Originator: Janet T. Watt
Originator: Jonathan A. Warrick
Publication_Date: 2021
Title:
Geophysical and core sample data collected offshore San Francisco, California, during field activity 2019-649-FA from 2019-10-11 to 2019-10-18
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9LBG9H5
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9LBG9H5
Description:
Abstract:
This section of the data release contains core logger tabular data of 34 vibracores that were collected aboard the R/V Bold Horizon in 2019 on U.S. Geological Survey Field Activity 2019-649-FA offshore San Francisco, California. The cores were analyzed for gamma ray density and magnetic susceptibility. The logging was performed at 1-cm intervals from the top of each core section. In addition to the core logger data, the locations of the cores are available as either a comma-delimited file or a shapefile.
Purpose:
Core logger data were used to assess sand and gravel resources in Federal and State waters for potential use in future beach nourishment projects along stretches of the coast where critical erosion hotspots have been identified. This cruise was funded through partnerships with the Bureau of Ocean Energy Management (BOEM) and the State of California Ocean Protection Council (OPC).
Supplemental_Information:
Additional information about the field activity from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-649-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20191011
Ending_Date: 20191018
Currentness_Reference: ground condition at time data were collected
Status:
Progress: Planned
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.87083
East_Bounding_Coordinate: -122.39324
North_Bounding_Coordinate: 38.01347
South_Bounding_Coordinate: 37.49665
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:a81e96a7-db1f-4a00-b5e3-5a2c9fa5e275
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Material Resources
Theme_Keyword: Assessments
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: vibracoring
Theme_Keyword: marine geology
Theme_Keyword: drilling and coring
Theme_Keyword: core analysis
Theme_Keyword: sea-floor characteristics
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: geology
Theme_Keyword: geotechnical experiments
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: State of California
Place_Keyword: San Francisco
Place_Keyword: Bolinas
Place_Keyword: Ocean Beach
Place:
Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS)
Place_Keyword: North Pacific Ocean
Access_Constraints: None
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey (USGS, the Bureau of Ocean Energy Management (BOEM), and the California Geological Survey (CGS) as the originator(s) of the dataset and in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: 2019-649-FA_tracks_and_cores.png
Browse_Graphic_File_Description:
Map showing locations of vibracore sites (purple dots) and tracklines (blue) along which chirp seismic data were collected.
Browse_Graphic_File_Type: PNG
Native_Data_Set_Environment: comma separated file
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Identified as best available version
Logical_Consistency_Report:
Core logger data were collected in the lab from vibracores collected during USGS cruise 2019-649-FA using a Geotek Multi-Sensor Core Logger. The logging was performed at regular intervals. Quality control was conducted during the logging process.
Completeness_Report:
Dataset 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.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Position data were provided by a Hemisphere V100 Global Positioning System using L1, C/A code and carrier phase smoothing with a stated accuracy of 60 centimeters.
Lineage:
Process_Step:
Process_Description:
34 cores were collected on cruise 2019-649-FA with a Rossfelder P-5 vibracorer.
Process_Date: 20191018
Process_Step:
Process_Description:
36 core logger data files were created for 34 vibracores (cores SF12 and SF18 are in two sections). The core logging was done with a Geotek Multi-Sensor Core Logger running Geotek MSCL software. The logger was equipped for gamma ray density measurements and magnetic susceptibility. The logging was performed at 1-cm intervals from the top of each core section. A 137Cs gamma ray source and gamma detector are mounted on the GeoTek MSCL for measuring bulk density and based on gamma attenuation through core samples. Gamma density was measured on whole cores in a polycarbonate liner at 1 cm intervals. The measurement was calibrated using an aluminum calibration piece mounted inside a water-filled polycarbonate core section. Anomalous values for gamma density were not excluded from the data. A 120 mm diameter Bartington MS2C loop was used to collect magnetic susceptibility data on whole cores. The sensor is electronically calibrated with a supplied stable iron standard. Magnetic susceptibility measurements were collected every 1 cm with 5 second dwell times. The data are shown as uncorrected magnetic susceptibility in 10exp-5 SI dimensionless units. Gamma ray density measurements below 0.1 grams per cubic centimeter or missing data values were the result of poor contact with the core sample or air voids at the logging location.
Process_Date: 20191104
Process_Step:
Process_Description:
Performed minor edits to the metadata to correct typos. No data were changed
Process_Date: 20211013
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Susan A. Cochran
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 36
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: WGS 1984 UTM Zone 11N
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -117.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units: Meter
Geodetic_Model:
Horizontal_Datum_Name: D WGS 1984
Ellipsoid_Name: WGS 1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Attribute table
Entity_Type_Definition:
Table containing attribute information associated with the dataset
Entity_Type_Definition_Source: Producer defined
Attribute:
Attribute_Label: Depth cm
Attribute_Definition: section depth in centimeters
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 151
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: Den1 g/cc
Attribute_Definition: gamma ray density, calculated
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.1598
Range_Domain_Maximum: 10.53
Attribute_Units_of_Measure: grams per centimeter
Attribute:
Attribute_Label: MS1 SI x 10^-5
Attribute_Definition:
uncorrected magnetic susceptibility in 10exp-5 SI dimensionless units
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 20.815
Range_Domain_Maximum: 609.97
Attribute_Units_of_Measure: dimensionless
Overview_Description:
Entity_and_Attribute_Overview: The first line of the csv file is a header line.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey Pacific Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 1-831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Resource_Description:
2019-649-FA_core_logs.zip contains core log data for vibracores collected during PCMSC field activity 2019-649-FA. Supplemental files include 2019-649-FA_core_locations.csv and 2019-649-FA_core_locations_shapefile.zip.
Distribution_Liability:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: comma-delimited text
Format_Version_Date: 20191104
Format_Information_Content:
2019-649-FA_ core_logs.zip contains core logger tabular data per vibracore section.
File_Decompression_Technique:
Winzip, 7-zip, or Winrar are free software that will open .zip files
Transfer_Size: 31.5
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/P9LBG9H5
Access_Instructions:
Data can be downloaded using the Network_Resource_Name link, then scroll down to the Sampling Data/Core logger data section.
Digital_Form:
Digital_Transfer_Information:
Format_Name: shapefile
Format_Version_Date: 20210514
Format_Information_Content:
2019-649-FA_core_locations_shapefile.zip is a shapefile of vibracore locations
File_Decompression_Technique:
Winzip, 7-zip, or Winrar are free software that will open .zip files
Transfer_Size: 0.003
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/P9LBG9H5
Access_Instructions:
Data can be downloaded using the Network_Resource_Name link, then scroll down to the Sampling Data/Core logger data section.
Digital_Form:
Digital_Transfer_Information:
Format_Name: comma-delimited text
Format_Version_Date: 20210430
Format_Information_Content:
2019-649-FA_core_locations.csv is a text file containing vibracore locations
File_Decompression_Technique: no compression used
Transfer_Size: 0.000935
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/P9LBG9H5
Access_Instructions:
Data can be downloaded using the Network_Resource_Name link, then scroll down to the Sampling Data/Core logger data section.
Fees: None.
Technical_Prerequisites: These data can be viewed with any graphics viewing software.
Metadata_Reference_Information:
Metadata_Date: 20211013
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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