Multi-sensor core logger (MSCL) scans of sediment cores collected offshore southern Cascadia, during field activity 2019-643-FA

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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: 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:

Multi-sensor core logger (MSCL) scans of sediment cores collected offshore southern Cascadia, during field activity 2019-643-FA

Geospatial_Data_Presentation_Form: Comma Separated Value (CSV) tabular data
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:

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 multi-sensor core logger (MSCL) data of sediment cores collected in southern Cascadia (offshore northern California) aboard the M/V 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
httpscmgds.marine.usgs.govfan_info.phpfan=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: -125.25388
East_Bounding_Coordinate: -124.07787
North_Bounding_Coordinate: 41.76312
South_Bounding_Coordinate: 40.76312

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:524fc0f1-075b-4d87-bcd4-b30a4bdc7dcc

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_mscl_preview.jpg
Browse_Graphic_File_Description: Example from core JPC-30 of MSCL data plotted from .csv file.
Browse_Graphic_File_Type: JPG

Native_Data_Set_Environment: Data were obtained with a Geotek MSCL-S 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:

Magnetic susceptibility values (mag_sus) measured in section 5 of core JPC10 (in "2019_643_FA_JPC10.csv") were rounded to integer values during acquisition. Otherwise, the 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 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. Multi-sensor core logger (MSCL) data were acquired on a Geotek MSCL-S system (www.geotek.co.uk/products/mscl-s/). Each core was scanned through the system and measured simultaneously for core thickness, p-wave amplitude, p-wave velocity, density, magnetic susceptibility, and acoustic impedance. Cores with multiple segments are composited into a single comma delimited text CSV file. Total depth in core, depth in an individual core segment, and core segment numbers are provided in the CSV files. File names correspond to the names of each core. For example, ‘2019_643_FA_GC19.tif’ corresponds to gravity core ‘GC19’. A list of MSCL CSV files is included in this data release in the 2019-643-FA_cores.csv file.

Process_Date: 2020

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: Core ID
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: 71

Spatial_Reference_Information:

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: Local surface
Depth_Resolution: 1.0
Depth_Distance_Units: centimeters
Depth_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2019-643-FA_core_mscl.zip
Entity_Type_Definition:

A zip file containing 71 comma delimited text files of multi-sensor core logger data.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: sb_depth_cm
Attribute_Definition:

Depth in full core of MSCL measurement (value represents the upper edge of a 1 cm interval).

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 719
Attribute_Units_of_Measure: centimeters
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: sect_num
Attribute_Definition: Section number of core
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 5
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: sect_depth_cm
Attribute_Definition:

Depth in section of MSCL measurement (value represents the upper edge of a 1 cm interval).