Photographs of vibracores collected during a Monterey Bay Aquarium Research Institute cruise in November 2019 offshore of south-central California (USGS FAN 2019-667-FA)

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Frequently anticipated questions:

What does this data set describe?

Title:
Photographs of vibracores collected during a Monterey Bay Aquarium Research Institute cruise in November 2019 offshore of south-central California (USGS FAN 2019-667-FA)
Abstract:
This dataset includes photographs of 49 vibracores that were collected by the Monterey Bay Aquarium Research Institute (MBARI) in November 2019 aboard the R/V Western Flyer using the remotely operated vehicle (ROV) Doc Ricketts. The collection of these cores was funded entirely by MBARI, and the cores have been donated to the U.S. Geological Survey (USGS). The cores were collected in collaboration with the USGS and the Bureau of Ocean Energy Management (BOEM) and are located in the same study area as the collaborative California Deepwater Investigations and Groundtruthing (Cal DIG I) project. The purpose of the overall Cal DIG I study is to assess shallow geohazards, benthic habitats, and thereby the potential for alternative energy infrastructure (namely floating wind turbines) offshore south-central California due to the study area's proximity to power grid infrastructure associated with the Morro Bay power plant. These data provide information about the geology of the seafloor and shallow subsurface offshore of the south-central California coast.
Supplemental_Information:
Additional information about the USGS field activity from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-667-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.
  1. How might this data set be cited?
    Kennedy, Daniel J., Walton, Maureen A., Cochrane, Guy R., Paull, Charles K., Gwiazda, Roberto, Lundsten, Eve, Kuhnz, Linda, Lorenson, Thomas D., McGann, Mary L., Nieminski, Nora M., and Addison, Jason A., 20211016, Photographs of vibracores collected during a Monterey Bay Aquarium Research Institute cruise in November 2019 offshore of south-central California (USGS FAN 2019-667-FA): data release DOI:10.5066/P9E2OP35, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Kennedy, Daniel J., Walton, Maureen A., Cochrane, Guy R., Paull, Charles K., Gwiazda, Roberto, Lundsten, Eve, Kuhnz, Linda, Lorenson, Thomas D., McGann, Mary L., Nieminski, Nora M., and Addison, Jason A., 2021, Donated ROV vibracore and sampling data collected during Monterey Bay Aquarium Research Institute cruises in 2019 offshore of south-central California: data release DOI:10.5066/P9E2OP35, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -121.341381
    East_Bounding_Coordinate: -121.785197
    North_Bounding_Coordinate: 35.72865
    South_Bounding_Coordinate: 34.95199
  3. What does it look like?
    MBARI_ROV_Nov2019_thumbnail.png (png)
    Image overview of the project area with sample locations
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 04-Feb-2019
    Currentness_Reference:
    ground condition at the time the samples were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: zipped TIFF images
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (78)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    2019-667-FA_NOV2019vibracore.zip
    Zipped folder contains TIFF images per split vibracore or vibracore segment, both with and without the ruler, and their respective software-proprietary xml files. Photographs for each core segment are in their own sub-folder with the following naming convention: DR11XX VC-7XX SECX PHOTO, where DR11XX is the ROV Doc Ricketts dive number, VC-7XX is the vibracores number given in the field, and SECX is the core section (if the core was not divided into sections, then this part of the file name is omitted). (Source: U.S. Geological Survey)
    IM001_01.xml
    Example of Geotek software-proprietary XML files for each split core image: 
    Image-type = giTIFImage
CoreID = DR1223 VC-731 SEC# Photo
Section-number = 1
Image-number = 1
Physical Width = 8.57
Physical Height = 149.30
Physical Top = 0.00
Pixels Per Scan = 5
Pixels per CM = 100
Horizontal Resolution = 100
Exposure time ms = 20
Calibration Aperture = 12.41
Image Aperture = 4.07
Red High Calibration = 18.0
Green High Calibration = 18.0
Blue High Calibration = 18.0
Red Low Calibration = 0.0
Green Low Calibration = 0.0
Blue Low Calibration = 0.0
Pixel Width = 859
Scan Lines = 14950
Filename = IM001_01.tif
Geotek camera lighting version="2" mode="visible" Bank2cluster1="0" Bank2cluster2="0" Bank2cluster3="0" Bank2cluster4="0" Bank1cluster1="0" Bank1cluster2="0" Bank1cluster3="0" Bank1cluster4="0"
Convg-x-red=0
Convg-x-green = 0
Convg-x-blue = 0
Convg-y-red = 0
Convg-y-green = 2
Convg-y-blue = 4
geotek-image
    (Source: Geotek) example only
    Entity_and_Attribute_Overview: Line scan photo of split cores from MSCL logger.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Daniel J. Kennedy
    • Maureen A. Walton
    • Guy R. Cochrane
    • Charles K. Paull
    • Roberto Gwiazda
    • Eve Lundsten
    • Linda Kuhnz
    • Thomas D. Lorenson
    • Mary L. McGann
    • Nora M. Nieminski
    • Jason A. Addison
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

This dataset was collected in order to identify shallow geohazards, benthic habitats, and thereby the potential for alternative energy infrastructure (namely floating wind turbines) offshore south-central California due to its proximity to power grid infrastructure associated with the Morro Bay power plant.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 23-Mar-2021 (process 1 of 1)
    Vibracores were collected by the Monterey Bay Aquarium Research Institute (MBARI), using the remotely operated vehicle (ROV) Doc Ricketts aboard the R/V Western Flyer. The cores were transported back to the Pacific Coastal Marine Science Center (PCMSC) in Santa Cruz, Calif. where they were split and photographed using a MSCL Geoscan V linescan system. Some of the cores were divided into multiple sections, resulting in 78 photographs of the 49 split cores. Split cores with multiple sections are indicated as such in the filename. A ruler was added to the TIFF images using the Geotek Add Ruler v.1.4 software, which exported the final TIFF and software-proprietary XML files, adding “R” to the file name.
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    No formal attribute accuracy tests were conducted
  2. How accurate are the geographic locations?
    The horizontal positioning for vibracores was determined using a Sonardyne Ranger 2720 USBL with Lodestar AHARS equipped on the ROV Doc Ricketts.
  3. How accurate are the heights or depths?
    No vertical positional accuracy tests were conducted
  4. Where are the gaps in the data? What is missing?
    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.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
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) as the originator of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - CMGDS
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov
  2. What's the catalog number I need to order this data set? 2019-667-FA_Nov2019vibracore.zip contains photographs of split vibracores archived using the tar.gz command. The data are divided up and presented by core sample, as reflected in the individual file name(s).
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: 2019-667-FA_Nov2019vibracore.zip contains photographs of split vibracores archived using the tar.gz command. The data are divided up and presented by core sample, as reflected in the individual file name(s). File_Decompression_Technique: Use WinZip or pkUnzip in format TIFF (version NA)
      Network links: https://doi.org/10.5066/P9E2OP35
    • Cost to order the data: None.

  5. What hardware or software do I need in order to use the data set?
    These data can be viewed with adobe acrobat.

Who wrote the metadata?

Dates:
Last modified: 16-Oct-2021
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9E2OP35/2019-667-FA_Nov2019vibracore_metadata.faq.html>
Generated by mp version 2.9.50 on Mon Oct 18 17:52:55 2021