Coordinates of sediment cores collected in Ozette Lake Washington, from 2019 to 2021.

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Frequently anticipated questions:

What does this data set describe?

Title:
Coordinates of sediment cores collected in Ozette Lake Washington, from 2019 to 2021.
Abstract:
Sediment cores and sub-bottom profiles were collected in Ozette Lake, Washington, from 2019 to 2021. These data were used to investigate submarine landslide deposits triggered by large Cascadia Subduction Zone earthquakes.
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=2019-622-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-641-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?
    Snyder, George R., Balster-Gee, Alicia F., Brothers, Daniel S., Singleton, Drake M., Padgett, Jason S., Hill, Jenna C., Ritchie, Andrew C., SeanPaul M. La Selle, Kluesner, Jared W., Sherrod, Brian, Powers, Daniel C., Ferro, Peter Dal, and Currie, Jackson E., 20240615, Coordinates of sediment cores collected in Ozette Lake Washington, from 2019 to 2021.: data release DOI:10.5066/P9W5RAL4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Snyder, George R., Balster-Gee, Alicia F., Brothers, Daniel S., Singleton, Drake M., Padgett, Jason S., Hill, Jenna C., Ritchie, Andrew C., SeanPaul M. La Selle, Kluesner, Jared W., Sherrod, Brian, Powers, Daniel C., Ferro, Peter Dal, and Currie, Jackson E., 2024, Seismic sub-bottom and sediment core data collected in Ozette Lake, Washington between 2019 and 2021: data release DOI:10.5066/P9W5RAL4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

    Other_Citation_Details:
    Suggested Citation: Snyder, G.R., Balster-Gee, A.F., Brothers, D.S., Singleton, D.M., Padgett, J.S., Hill, J.C., Ritchie, A.C., La Selle, S.M., Kluesner, J.W., Sherrod, B., Powers, D.C., Dal Ferro, P., and Currie, J.E., 2024, Seismic sub-bottom, sediment core, and radiocarbon data collected in Ozette Lake, Washington: U.S. Geological Survey data release, https://doi.org/10.5066/P9W5RAL4.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -124.66785
    East_Bounding_Coordinate: -124.607701
    North_Bounding_Coordinate: 48.15099
    South_Bounding_Coordinate: 48.051844
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 14-Jul-2019
    Ending_Date: 30-Aug-2021
    Currentness_Reference:
    Ground conditions at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: comma-separated values
  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 (116)
    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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal Degrees. The horizontal datum used is WGS 1984.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257224.
      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.001
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values
  7. How does the data set describe geographic features?
    OzetteLake.core.location.information.csv
    sampling locations of cores. (Source: U.S. Geological Survey)
    Core ID
    Unique core identifier for each core location. If a core contains more than one section this number is repeated. (Source: Producer defined) Sequential unique numbers automatically generated. Prefixes GC-, VC-, and BC- describe coring method, gravity core, vibracore, and bob core, respectively.
    FAN
    USGS field activity identifier (Source: U.S. Geological Survey)
    ValueDefinition
    2019-622-FA2019-622-FA is the field activity that these sediment cores were collected under.
    2021-641-FA2021-641-FA were the field activity that these sediment cores were collected under
    Core Type
    Type of coring device used. Gravity for a gravity core, Vibration for a vibracore and Percussion for a bob core (Source: U.S. Geological Survey)
    ValueDefinition
    GravityGravity coring method
    VibrationVibration coring method
    PercussionBob core method
    Latitude
    Latitude where core was collected in decimal degrees. (Source: Onboard Hemisphere V110 GPS)
    Range of values
    Minimum:48.051844
    Maximum:48.150990
    Units:meters
    Resolution:0.000001
    Longitude
    Longitude where core was collected in decimal degrees. (Source: Onboard Hemisphere V110 GPS)
    Range of values
    Minimum:-124.667850
    Maximum:-124.607701
    Units:meters
    Resolution:0.000001
    Water Depth
    Water depth in meters where core was collected. Values derived from high-resolution bathymetry data collected during USGS FAN 2019-622-FA (Dartnell and others, 2024). (Source: U.S. Geological Survey)
    Range of values
    Minimum:0.5
    Maximum:90.550369
    Units:meters
    Resolution:0.000001
    Section number
    Core section number (Source: U.S. Geological Survey)
    Range of values
    Minimum:1
    Maximum:2
    Units:number of core sections
    Resolution:1
    Section length
    length of the core section (Source: U.S. Geological Survey)
    Range of values
    Minimum:32
    Maximum:154.5
    Units:centimeters
    Resolution:0.5
    Total core length
    combined length of all core sections (Source: U.S. Geological Survey)
    Range of values
    Minimum:44
    Maximum:312.5
    Units:centimeters
    Resolution:0.5
    Photo file
    Unique photo file for each core location. If a core contains more than one section the photofile combines all sections. These files are provided in the Imagery Data section of this data release. (Source: Producer defined) Unique names automatically generated. Names combine the Core ID and FAN number and are appended with .photoscan.jpg.
    CT file xz
    Unique CT file for each core location in along the xz axis. If a core contains more than one section the CT file combines all sections. These files are provided in the Imagery Data section of this data release. (Source: Producer defined) Unique names automatically generated. Names combine the Core ID and FAN number and are appended with .xz.jpg. n/a values indicate that no CT scan exists.
    CT file yz
    Unique CT file for each core location in along the yz axis. If a core contains more than one section the CT file combines all sections. These files are provided in the Imagery Data section of this data release. (Source: Producer defined) Unique names automatically generated. Names combine the Core ID and FAN number and are appended with .yz.jpg. n/a values indicate that no CT scan exists.
    MSCL file
    If Multi-sensor core logger (MSCL) data was recorded then the data will be listed in this csv file. This CSV file is provided in the Sampling Data section of this data release. (Source: Producer defined) CSV file name is OzetteLake.cores.MSCL.data .csv. n/a values indicate that no MSCL data exist.
    XRF file
    If X-ray Fluorescence (XRF) scan data was collected, then the data will be listed in this csv file. This CSV file is provided in the Sampling Data section of this data release. (Source: Producer defined) CSV file name is OzetteLake.core.XRFdata .csv. n/a values indicate that no XRF data exists.
    Grainsize file
    If Graninsize sampling data was collected, then the data will be listed in this csv file. Cores were subsampled. This CSV file is provided in the Sampling Data section of this data release. (Source: Producer defined) CSV file name is OzetteLake.core.XRFdata .csv. n/a values indicate that no grainsize data exist.
    Radiocarbon file
    If Radiocarbon sampling data was collected, then the data will be listed in this csv file. Cores were subsampled. This CSV file is provided in the Sampling Data section of this data release. (Source: Producer defined) CSV file name is OzetteLake.radiocarbon.data .csv. n/a values indicate that no radiocarbon data exist.
    Entity_and_Attribute_Overview:
    OzetteLake.core.information.csv is a CSV file of Ozette Lake core locations and associated data derived from each core.
    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)
    • George R. Snyder
    • Alicia F. Balster-Gee
    • Daniel S. Brothers
    • Drake M. Singleton
    • Jason S. Padgett
    • Jenna C. Hill
    • Andrew C. Ritchie
    • SeanPaul M. La Selle
    • Jared W. Kluesner
    • Brian Sherrod
    • Daniel C. Powers
    • Peter Dal Ferro
    • Jackson E. Currie
  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?

Identification of fault-related submarine hazards is a primary mission of the USGS Coastal and Marine Geology Program. In the US Pacific Northwest region, the greatest earthquake and tsunami threat is posed by the Cascadia Subduction Zone. From 2019-2021 the USGS carried out a detailed field investigation of earthquake-triggered landslide deposits in Ozette Lake, WA, to reconstruct the timing and severity of large subduction zone earthquakes in northern Cascadia. Field data collected as part of this investigation include boomer single-channel seismic, chirp seismic, and sediment cores. These data are intended to further our understanding of geologic hazards relating to the Cascadia Subduction Zone, improve risk assessments for local communities and critical infrastructure, and to provide data for future research on regional tectonic and sedimentary history of northern Cascadia.

How was the data set created?

  1. From what previous works were the data drawn?
    Dartnell and others, 2024 (source 1 of 1)
    Dartnell, Peter, Brothers, Daniel S., Ritchie, Andrew C., Sherrod, Brian, Currie, Jackson E., Ferro, Peter Dal, and Powers, Daniel C., 2024, Bathymetry and acoustic-backscatter data for Ozette Lake, Washington collected during USGS field activity 2019-622-FA: U.S. Geological Survey, online.

    Online Links:

    Type_of_Source_Media: online database
    Source_Contribution: High resolution bathymetry data
  2. How were the data generated, processed, and modified?
    Date: 16-Jan-2024 (process 1 of 1)
    Sediment cores were collected throughout Ozette Lake, WA during USGS field activity 2019-622-FA and 2021-641-FA using either a Vibracorer (VC- labeled core ID), a gravity corer (GC- labeled core ID), or a mini-hammer corer (BC- labeled core ID). Water depths were derived from high resolution bathymetry (Dartnell and others, 2024). Sediment cores were sent to USGS Pacific Coastal and Marine Science Center (PCMSC) for processing and archiving. At PCMSC, cores were split and photographed using a Geotek multi-sensor core logger (MSCL) system. Cores over 1.5 m in length were split into multiple sections to permit scanning. Additional sampling of the split cores included grainsize analysis, X-ray fluorescence (XRF) scanning, and radiocarbon sampling to date stratigraphic ages.
  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?
    Quality control of attribute accuracy was conducted during field data collection, processing workflows and in compilation of this data release.
  2. How accurate are the geographic locations?
    A Hemisphere V110 GPS system was used for obtaining latitude and longitude point locations during the cruise with a stated accuracy of 0.6 meters (95 percent confidence).
  3. How accurate are the heights or depths?
    Core location water depths were estimated from high-resolution bathymetry acquired during 2019-622-FA and and are estimated to be within +/-0.2 meters of the listed depth values (Dartnell and others, 2024).
  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 consistency 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 No access constraints
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 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
    2885 Mission Street
    Santa Cruz, CA

    1-831-427-4747 (voice)
    pcmsc_data@usgs.gov
  2. What's the catalog number I need to order this data set? Core coordinates and associated data file information are provided in csv format (OzetteLake.core.loation.information.csv) accompanied by CSDGM FGDC compliant metadata.
  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: CSV formatted core location, elevation and associated data derived from each core. in format comma-delimited text Size: 0.0227
      Network links: https://doi.org/10.5066/P9W5RAL4
    • Cost to order the data: None.

  5. What hardware or software do I need in order to use the data set?
    CSV files can be views with any text viewer software.

Who wrote the metadata?

Dates:
Last modified: 15-Jun-2024
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_P9W5RAL4/OzetteLake.core.location.information.metadata.faq.html>
Generated by mp version 2.9.51 on Mon Jun 24 11:44:02 2024