Metadata: Identification_Information: Citation: Citation_Information: Originator: Jenna C. Hill Originator: Nora M. Nieminski Originator: SeanPaul M. La Selle Originator: Janet T. Watt Originator: Daniel S. Brothers Originator: Mary L. McGann Originator: Travis V. Alongi Originator: Gerry A. Hatcher Originator: Brandon M. Nasr Originator: Jennifer A. McKee Originator: Peter Dal Ferro Publication_Date: 20240327 Title: Photographs of sediment cores collected offshore southern Cascadia, during field activity 2019-643-FA Geospatial_Data_Presentation_Form: TIFF format images Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1E8GDZH 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/P1E8GDZH Larger_Work_Citation: Citation_Information: Originator: Jenna C. Hill Originator: Nora M. Nieminski Originator: SeanPaul M. La Selle Originator: Janet T. Watt Originator: Daniel S. Brothers Originator: Mary L. McGann Originator: Travis V. Alongi Originator: Gerry A. Hatcher Originator: Brandon M. Nasr Originator: Jennifer A. McKee Originator: Peter Dal Ferro Publication_Date: 2024 Title: Sediment core data from offshore southern Cascadia - USGS field activity 2019-643-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1E8GDZH Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Hill, J.C., Nieminski, N.M., La Selle, S.M., Watt, J.W., Brothers, D.S., McGann, M.L., Alongi, T.V., Hatcher, G.A., Nasr, B.M., McKee, J.A., and Dal Ferro, P., 2024, Sediment core data from offshore southern Cascadia during field activity 2019-643-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P1E8GDZH. Online_Linkage: https://doi.org/10.5066/P1E8GDZH Description: Abstract: This dataset includes photographs (linescan images) of sediment cores collected in southern Cascadia (offshore northern California) aboard the MV Bold Horizon in September-October 2019. Purpose: As part of a multi-year project focused on characterizing offshore marine geohazards (tsunamis, earthquakes, and landslides), the U.S. Geological Survey (USGS) Coastal and Marine Hazards and Resources Program is collaborating with the Bureau of Ocean Energy Management (BOEM) to conduct research offshore northern California. This region marks the southern extent of the Cascadia Subduction Zone, which is a major tectonic boundary that is prone to megathrust earthquakes and includes a BOEM offshore wind area of interest. To gain a better understanding of the geologic hazards of the region, improve risk assessments for local communities and critical infrastructure, and to provide data for future research on regional tectonic, sedimentary, and geomorphic evolution of coastal California, the USGS collected sediment cores to enable a detailed investigation of southern Cascadia's geologic history and ongoing activity. 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=2019-643-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: 20190927 Ending_Date: 20191010 Currentness_Reference: Ground conditions at time data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -125.25388241 East_Bounding_Coordinate: -124.07787323 North_Bounding_Coordinate: 41.76311745 South_Bounding_Coordinate: 40.76311745 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:ea610cb2-c22b-4bc3-9fed-01cee3531481 Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: core analysis Theme_Keyword: ocean processes Theme_Keyword: sediment transport Theme_Keyword: geospatial datasets 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: 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_Keyword: Department of the Interior Theme_Keyword: DOI Theme_Keyword: field activity number 2019-643-FA Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Pacific Ocean Place_Keyword: State of California Place_Keyword: Humboldt County Place_Keyword: Eureka 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 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: JPC30_photo_preview.jpg Browse_Graphic_File_Description: Example linescan image of a section of core JPC-30. Browse_Graphic_File_Type: JPG Native_Data_Set_Environment: Linescan photographs were obtained with a Geotek Linescan V camera system. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Quality control of attribute accuracy was conducted during field data collection and processing workflows. 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. Positional_Accuracy: Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Core depth values are relative to the top of sediment in the uppermost core section. Coring-induced compaction, if any, was not determined. No formal vertical accuracy tests were conducted. Lineage: Process_Step: Process_Description: Cores were collected aboard MV Bold Horizon using a U.S. Geological Survey (USGS) jumbo piston corer (JPC) on cruise 2019-643-FA. The JPC system consisted of a 2500-lb head weight, 3.43-inch diameter barrel, and polybutyrate liner. The JPC trigger arm was set up to collect a trigger core (TC) associated with each JPC (if successful). Gravity cores (GC) were collected with the same JPC system in two localities. JPCs and GCs were extruded and sectioned (150 cm) at sea. The cores were then transported back to the USGS Pacific Coastal and Marine Science Center. Process_Date: 2019 Process_Step: Process_Description: Cores were segmented into 150 cm (or shorter) sections and split into "working" and "archive" halves in the USGS Pacific Coastal and Marine Science Center core 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 40 milliseconds. Each image file corresponds to an individual color photograph of a core segment in 16-bit RGB TIFF format, along with proprietary metadata files containing image scaling information. File names correspond to the names of each core segment. For example '2019_643_FA_GC19_02.tif' corresponds to the second segment of the gravity core 'GC19'. A list of linescan core photo TIFF images is included in this data release in the 2019-643-FA_cores.csv file. Process_Date: 2020 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: 142 Spatial_Reference_Information: Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Local surface Depth_Resolution: 0.1 Depth_Distance_Units: centimeters Depth_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2019-643-FA_core_photos.zip Entity_Type_Definition: A zip file containing 142 16-bit RGB TIFF files of core photographs and their respective software-proprietary XML files. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Linescan metadata XML files Attribute_Definition: These Geotek software-proprietary XML files contain information on linescan acquisition settings and image scaling information. Each linescan TIFF file is accompanied by an XML file with the same filename. The following attributes and example attribute values are provided from 2019_643_FA_GC19_02.xml giRulerImage 2019_643_FA_GC19 02 1 9.25 151.40 70.10 5 200 200 40 4.44 4.07 18.0 18.0 18.0 0.0 0.0 0.0 1850 30280 2019_643_FA_GC19_02.tif 0 0 0 0 4 8 Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Geotek software-proprietary XML files contain information on linescan acquisition settings and image scaling information. 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_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 photographs are provided in a zip archive (2019-643-FA_cores_photos.zip) with CSDGM FGDC compliant metadata. 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: TIF, XML Format_Information_Content: Zip file contains core photographs in TIFF format and associated proprietary metadata in XML format. File_Decompression_Technique: Zip file may be decompressed with any zip utility (e.g., 7zip, WinZip, Archive Utility). Transfer_Size: 34078 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P1E8GDZH Access_Instructions: Data can be downloaded using the Network_Resource_Name link and scrolling to 2019-643-FA_cores_photos.zip in the Imagery Data section. Fees: None. Technical_Prerequisites: Linescan images can be viewed with any standard image software. Proprietary metadata XML files can be viewed with any standard text editing software. Metadata_Reference_Information: Metadata_Date: 20240327 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