Computed tomography (CT) scans of cored collected in Ozette Lake, Washington, between 2019 and 2021

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: George R. Snyder
Originator: Alicia F. Balster-Gee
Originator: Daniel S. Brothers
Originator: Drake M. Singleton
Originator: Jason S. Padgett
Originator: Jenna C. Hill
Originator: Andrew C. Ritchie
Originator: SeanPaul M. La Selle
Originator: Jared W. Kluesner
Originator: Brian Sherrod
Originator: Daniel C. Powers
Originator: Peter Dal Ferro
Originator: Jackson E. Currie
Publication_Date: 20240615
Title:

Computed tomography (CT) scans of cored collected in Ozette Lake, Washington, between 2019 and 2021

Geospatial_Data_Presentation_Form: JPEG
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9W5RAL4

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/P9W5RAL4
Larger_Work_Citation:

Citation_Information:

Seismic sub-bottom, sediment core, and radiocarbon data collected in Ozette Lake, Washington between 2019 and 2021

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9W5RAL4

Publication_Information:

Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey

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.

Online_Linkage: https://doi.org/10.5066/P9W5RAL4

Description:

Abstract:

Sediment cores were collected in Ozette Lake, Washington, from 2019 to 2021. Cores were scanned using Computed Tomography (CT). These data were used to investigate submarine landslide deposits triggered by large Cascadia Subduction Zone earthquakes.

Purpose:

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 Lake Ozette, 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.

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.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20191018
Ending_Date: 20210830

Currentness_Reference: Ground conditions at time data were collected

Status:

Progress: In work
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.66785
East_Bounding_Coordinate: -124.607701
North_Bounding_Coordinate: 48.150990
South_Bounding_Coordinate: 48.051844

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:a794d32d-aec7-4efd-b31d-b322e79a422d

Theme:

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

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: substrate

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geochemistry
Theme_Keyword: core analysis
Theme_Keyword: geospatial datasets

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: data processing
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_Keyword: Department of the Interior
Theme_Keyword: DOI

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: State of Washington
Place_Keyword: Ozette Lake
Place_Keyword: Ozette River

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Olympic Wilderness

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(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: VC-04.2019-622-FA.xz.jpg
Browse_Graphic_File_Description:

Example CT scan of vibracore VC-04 collected during field activity 2019-622-FA from Ozette Lake, Washington.

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment:

Computed Tomography (CT) scans were obtained with a Geotek RXCT system.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Quality control of attribute accuracy was conducted during field data collection, processing workflows and during compilation of this data release.

Logical_Consistency_Report: No formal logical consistency tests were conducted.
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.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Peter Dartnell
Originator: Daniel S. Brothers
Originator: Andrew C. Ritchie
Originator: Brian Sherrod
Originator: Jackson E. Currie
Originator: Peter Dal Ferro
Originator: Daniel C. Powers
Publication_Date: 2024
Title:

Bathymetry and acoustic-backscatter data for Ozette Lake, Washington collected during USGS field activity 2019-622-FA

Geospatial_Data_Presentation_Form: Raster Digital Dataset
Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9U91FSB

Type_of_Source_Media: online database
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20190714
Ending_Date: 20190717

Source_Currentness_Reference: ground condition at time data were collected.

Source_Citation_Abbreviation: Dartnell and others, 2024
Source_Contribution: High resolution bathymetry data

Process_Step:

Process_Description:

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) 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 longer than 1.5 m were split into multiple sections to permit scanning in a Geotek RXCT X-ray tomography system. Two representative sections in each core along the XZ and YZ axes were output from the full 3D CT volumes. Images from the CT scanner had ruler scales appended using the Geotek Add Ruler v 1.4 software. Finally, using imagemagick command line tools, multi-section core images were recombined, and images were converted to JPG format.

Process_Date: 20220826

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: 122

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal Degrees

Geodetic_Model:

Horizontal_Datum_Name: WGS 1984
Ellipsoid_Name: WGS 84
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 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

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Core CT images are provided in two zip archives accompanied by CSDGM FGDC compliant metadata. 2019-622-FA.vibracore.CT.zip contains the CT vibracore scans and 2021-641-FA.bobcore.CT.zip contains the CT bob core scans. Two jpg files containing downcore CT images of coronal (XZ) and saggital (YZ) views are provided for each scanned core with embedded exif header descriptions. Naming convention for vibracores is: VC-##.2019-622-FA.[xz or yz].jpg. Naming convention for bob cored is: BC-##.2021-641-FA.[xz or yz].jpg. Location information for each sediment core can be found in the OzetteLake.core.location.information.csv that is included in this data release.

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - CMGDS

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:

Core CT images are provided in two zip archives accompanied by CSDGM FGDC compliant metadata. 2019-622-FA.vibracore.CT.zip contains the CT vibracore scans and 2021-641-FA.bobcore.CT.zip contains the CT bob core scans. Two jpg files containing downcore CT images of coronal (XZ) and saggital (YZ) views are provided for each scanned core with embedded exif header descriptions. Note that rulers appended to images are provided for scale only and do not necessarily correlate with length measurements in the tabular data provided with this data release (for example the length along a core where a radiocarbon sample was collected). Users are advised to use the rulers as a scale to make length measurements along the core. Full 3D CT scan volumes are available upon request; please contact the PCMSC Data Coordinator about availability.

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: JPEG
Format_Information_Content: Zip file contains CT scans of each core in JPG format.
File_Decompression_Technique:

Zip files may be decompressed with any zip utility (for example, 7zip, WinZip, Archive Utility).

Transfer_Size: 45.8

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P9W5RAL4

Access_Instructions:

Vibracore CT scans (2019-622-FA.vibracore.CT.zip) can be downloaded by using the Network_Resource_Name link and scrolling to the Imagery data section.

Digital_Form:

Digital_Transfer_Information:

Format_Name: JPEG
Format_Information_Content: Zip file contains CT scans of each core in JPG format.
File_Decompression_Technique:

Zip files may be decompressed with any zip utility (for example, 7zip, WinZip, Archive Utility).

Transfer_Size: 31.3

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P9W5RAL4

Access_Instructions:

Bob core CT scans (2021-641-FA.bobcore.CT.zip) can be downloaded by using the Network_Resource_Name link and scrolling to the Imagery data section.

Fees: None.

Technical_Prerequisites: Core CT images can be viewed with any standard image software.

Metadata_Reference_Information:

Metadata_Date: 20240615
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

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9W5RAL4/OzetteLake.core.CT.metadata.html>