Photographs of vibracores from Searsville Lake, Jasper Ridge Biological Preserve, Stanford, California

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: SeanPaul M. La Selle
Originator: M. Allison Stegner
Originator: Brandon M. Nasr
Originator: Elizabeth A. Hadly
Originator: Anthony D. Barnosky
Originator: Brian Sherrod
Publication_Date: 20230131
Title:

Photographs of vibracores from Searsville Lake, Jasper Ridge Biological Preserve, Stanford, California

Geospatial_Data_Presentation_Form: raster digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P98CEB1B

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/P98CEB1B
Online_Linkage:

https://www.sciencebase.gov/catalog/item/630569ced34e3b967a8b51c1

Larger_Work_Citation:

Citation_Information:

Computed Tomography (CT) scans, photographs, X-ray Fluorescence (XRF) scans, grain size, and gamma-ray bulk density data of vibracores from Searsville Lake, Jasper Ridge Biological Preserve, Stanford, California

Geospatial_Data_Presentation_Form: publication
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P98CEB1B

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/P98CEB1B

Description:

Abstract:

This portion of the data release presents linescan images (photographs) from vibracores collected from Searsville Lake, a reservoir in Jasper Ridge Biological Preserve, Stanford, California in October 2018 (USGS Field Activity 2018-682-FA). Images were obtained from two vibracores (JRBP2018-VC01A and JRBP2018-VC01B) at 50-micron (200 pixel per cm) resolution. Color images in 16-bit TIFF format are provided for each core segment, along with proprietary metadata files containing image scaling information.

Purpose:

Images were obtained to characterize sediments in vibracores. These data are intended for science researchers, students, policy makers, and the general public.

Supplemental_Information:

Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-682-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: 20181029
Ending_Date: 20181029

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.23787
East_Bounding_Coordinate: -122.23783
North_Bounding_Coordinate: 37.40684
South_Bounding_Coordinate: 37.40683

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: inlandWaters

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: limnology
Theme_Keyword: core analysis

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: substrate

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: sediment

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

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:630569ced34e3b967a8b51c1

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Searsville Lake
Place_Keyword: Jasper Ridge
Place_Keyword: Stanford
Place_Keyword: San Mateo County
Place_Keyword: State of California

Access_Constraints: None. Please see 'Distribution Info' for details.
Use_Constraints:

None. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: PCMSC Science Data Coordinator
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: 831-427-474
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted

Logical_Consistency_Report:

The core depths listed in the Geotek software’s proprietary metadata files and the ruler alongside the TIFF images are not corrected for sediment compaction and are relative to the surface of the lakebed.

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:

The locations of samples were determined using a Garmin etrex 30x handheld global satellite navigation system (GNSS) receiver capable of receiving wide area augmentation system (WAAS) signals. The manufacturer reported accuracy for horizontal positions is 3-5 m while receiving WAAS signals.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Core location depths and water depths were not associated with a fixed vertical datum at the time of core collection. No formal positional accuracy tests were conducted, nor were they applicable for this dataset.

Lineage:

Process_Step:

Process_Description:

Cores were collected on October 29, 2018. A handheld global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples. Cores were segmented into 150 cm (or shorter) sections in the field and split into "working" and "archive" halves in the lab. Sediment surfaces were cleaned and smoothed on the "working" halves of split cores. A Geotek V Linescan Imaging system mounted to a Geotek Multisensor Core Logger (MSCL) was used to automate continuous downcore photography. A prime lens with a 50 mm focal length was mounted 38.6 cm above the core surface. Cross polarized light emitting diodes (LED) were used to illuminate the sediment surface. Colors were calibrated in the Geotek Linescan software using an 18 percent gray card and images were acquired at an aperture of f4.07 and exposure time of 80 milliseconds. Each zip file corresponding to individual core segments contain two color images in 16-bit TIFF format, along with proprietary metadata files containing image scaling information. The TIFF filenames ending in '_R' contain an embedded vertical scale on the left-hand side. Zip file names correspond to the names of each core segment. For example ‘JRBP2018-VC01A-289-439cm_linescan.zip’ contains two TIFF images from a segment of the vibracore VC01A with a top depth below the lakebed of approximately 289 cm and bottom depth of 439 cm.

Process_Date: 20190618
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: SeanPaul La Selle
Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science CEnter

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission St.
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-7574
Contact_Electronic_Mail_Address: slaselle@usgs.gov

Process_Step:

Process_Description: corrected typo in doi number (scochran@usgs.gov)
Process_Date: 20230223

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.00004
Longitude_Resolution: 0.00001
Geographic_Coordinate_Units: Decimal Degrees

Geodetic_Model:

Horizontal_Datum_Name: 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: zip files containing linescan images
Entity_Type_Definition:

Each zip file contains 2 TIFF files and their respective software-proprietary XML files.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label:

JRBP2018-VC01B-158-214cm_linescan, JRBP2018-VC01B-216-364cm_linescan, JRBP2018-VC01B-364-515cm_linescan, JRBP2018-VC01B-515-650cm_linescan, JRBP2018-VC01B-650-801cm_linescan, JRBP2018-VC01B-801-952cm_linescan, JRBP2018-VC01B-952-1103cm_linescan

Attribute_Definition:

Folders each containing two linescan TIFF images representing each core section and their respective Geotek software-proprietary XML files. The TIFF files ending in "_R" include a digital scale on the left side of the image. The Geotek software-proprietary XML files contain the following attributes and example attribute values are provided: <geotek-image> <image-type>giTIFImage</image-type> <coreID>JRBP2018-VC01B-158-214cm</coreID> <section-number>1</section-number> <image-number>1</image-number> <physical-width>8.20</physical-width> <physical-height>56.90</physical-height> <pixels-per-scan>5</pixels-per-scan> <pixels-per-CM>200</pixels-per-CM> <horizontal-resolution>200</horizontal-resolution> <exposure-time-ms>80</exposure-time-ms> <calibration-aperture>5.99</calibration-aperture> <image-aperture>4.07</image-aperture> <red-high-calibration>18.0</red-high-calibration> <green-high-calibration>18.0</green-high-calibration> <blue-high-calibration>18.0</blue-high-calibration> <red-low-calibration>0.0</red-low-calibration> <green-low-calibration>0.0</green-low-calibration> <blue-low-calibration>0.0</blue-low-calibration> <pixel-width>1639</pixel-width> <scan-lines>11380</scan-lines> <filename>IM001_01.tif</filename> <geotek-camera-lighting version="2" mode="visible"> <visible-lighting-data> <bank-two> <bank2cluster1>128</bank2cluster1> <bank2cluster2>128</bank2cluster2> <bank2cluster3>128</bank2cluster3> <bank2cluster4>128</bank2cluster4> <bank2cluster5>128</bank2cluster5> </bank-two> <bank-one> <bank1cluster1>128</bank1cluster1> <bank1cluster2>128</bank1cluster2> <bank1cluster3>128</bank1cluster3> <bank1cluster4>128</bank1cluster4> <bank1cluster5>128</bank1cluster5> </bank-one> </visible-lighting-data> </geotek-camera-lighting> <convg-x-red>0</convg-x-red> <convg-x-green>0</convg-x-green> <convg-x-blue>0</convg-x-blue> <convg-y-red>0</convg-y-red> <convg-y-green>4</convg-y-green> <convg-y-blue>8</convg-y-blue> <is-a-sync-scan-image>0</is-a-sync-scan-image> </geotek-image>

Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

These Geotek software-proprietary XML files contain information on linescan image acquisition settings and image scaling. The values in the example provided may be different for each scan. Please contact the PCMSC data coordinator for more information on the contents of these XML files.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GS ScienceBase
Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: United States

Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov

Resource_Description:

Linescan images are available in TIFF image format and provided along with FGDC-compliant metadata.

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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: TIFF
Format_Information_Content:

Downloadable zip files, ranging in size from 212.5 MB to 581.8 MB, contain linescan TIFF (.tif) images and associated software-proprietary metadata files (.xml). Zip file names correspond to the names of each core segment. For example ‘JRBP2018-VC01A-289-439cm_linescan.zip’ contains linescan TIFF images from the segment of vibracore VC01A with a top depth of 289 cm and bottom depth of 439 cm.

File_Decompression_Technique: Zip
Transfer_Size: 528046

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/630569ced34e3b967a8b51c1

Network_Resource_Name: https://doi.org/10.5066/P98CEB1B

Access_Instructions:

Data can be downloaded using the Network_Resource_Name links. The first link points to a landing page with metadata and individual zipped data files of linescan photographs. The second link points to the landing page for the entire data release.

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20230223
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: PCMSC Science Data Coordinator
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: 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

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P98CEB1B/JRBP2018-linescan-metadata.html>