Locations of sediment cores collected from Montague Island, AK

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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: Robert C. Witter
Originator: SeanPaul M. La Selle
Originator: Jessica DePaolis
Originator: Peter J. Haeussler
Originator: Adrian M. Bender
Originator: Janet H. Curran
Originator: Tina Dura
Publication_Date: 20240326
Title: Locations of sediment cores collected from Montague Island, AK
Geospatial_Data_Presentation_Form: comma-delimited text
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P13RVDJZ

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/P13RVDJZ
Larger_Work_Citation:

Citation_Information:

Computed Tomography (CT) scans of sediment cores collected from Montague Island, AK

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P13RVDJZ

Publication_Information:

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

Other_Citation_Details:

Suggested Citation: Witter, R.C., La Selle, S.M., DePaolis, J., Haeussler, P.J., Bender, A.M., Curran, J.H., Dura, T., 2024, Computed Tomography (CT) scans of sediment cores collected from Montague Island, AK: U.S. Geological Survey data release, https://doi.org/10.5066/P13RVDJZ.

Online_Linkage: https://doi.org/10.5066/P13RVDJZ

Description:

Abstract:

This dataset includes locations of sediment cores collected from coastal environments on Montague Island, Alaska. The cores were collected with hand driven peat augers to assess environmental changes related to tectonic uplift caused by historic and prehistoric earthquakes.

Purpose:

The 2017 USGS Subduction Zone Science plan includes the key priority to characterize past hazardous events to forecast the future using onshore and offshore clues. Such clues include coastal evidence of sudden vertical land-level changes caused by large earthquakes along subduction zones. Sediment cores from lagoons uplifted >3 m in the 1964 earthquake along the coast of Montague Island aid in interpreting changes in deposition environment over the past several thousand years, which may record evidence for past episodes of earthquake uplift.

Supplemental_Information:

Cores were collected by USGS, Alaska Science Center; cores were subsequently analyzed and archived by collaborating scientists at Virginia Tech. 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: 20190710
Ending_Date: 20190830

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: -147.32948
East_Bounding_Coordinate: -147.30783
North_Bounding_Coordinate: 60.17820
South_Bounding_Coordinate: 60.19528

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:86b78265-de3f-4ab9-808f-1d7e8c5053fd

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: core analysis
Theme_Keyword: earthquakes
Theme_Keyword: paleoseismology

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: Earthquake Hazards Program
Theme_Keyword: Alaska Science Center
Theme_Keyword: Department of the Interior
Theme_Keyword: DOI

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: State of Alaska
Place_Keyword: Montague Island
Place_Keyword: Chugach Census Area
Place_Keyword: Prince William Sound

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Chugach National Forest

Access_Constraints: None. Please see 'Distribution Info' for details.
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_Person_Primary:

Contact_Person: PCMSC Science Data Coordinator
Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-427-474
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Native_Data_Set_Environment:

CSV file was created and edited using Microsoft Excel v2308 running on Microsoft Windows 10 Enterprise v10.0.19045.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Quality control of attribute accuracy was conducted during field data collection and processing workflows. No formal attribute accuracy tests were conducted.

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:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The locations of core sites in 2019 were determined using a handheld global satellite navigation system (GNSS) receiver capable of receiving wide area augmentation system (WAAS) signals. The manufacturer reported accuracy for horizontal positions is 3-5 m while receiving WAAS signals.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Core depth interval values are relative to the top of sediment surface at the time of core collection. Coring-induced compaction, if any, was not determined. No formal vertical accuracy tests were conducted.

Lineage:

Process_Step:

Process_Description:

Sediment cores were collected from coastal environments on Montague Island, Alaska using a hand-driven peat sampler at two sites: 'Hidden Lagoons' and 'Crescent'. At each core site, two adjacent bore holes were used to sample sediment in 50 cm intervals. Coring alternated between the two bore holes to avoid sampling the approximately 7 cm of disturbed sediment induced by the “nose” at the bottom of the peat sampler. After core extraction, sediment in the auger was transferred to an approximately 5 cm diameter plastic sleeve (50 cm long, 2 inch diameter polyvinyl chloride (PVC) pipe cut lengthwise) and wrapped in plastic. Sampling depths were targeted to bracket specific stratigraphic layers. The cores in this data release therefore do not represent the entire stratigraphic sequence at each core site. Cores were transported back to the USGS Pacific Coastal and Marine Science Center core lab for subsequent CT analyses.

Process_Date: 2019

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: 6

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.00001
Longitude_Resolution: 0.00001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563

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: montague_cores.csv
Entity_Type_Definition:

A comma delimited text file in CSV format containing core location information and computed tomography (CT) scan image file names included in this data release.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: core_id
Attribute_Definition: Unique core identification assigned in the field.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Core IDs begin with '19' indicating collection in 2019. 'HL' refers to the Hidden Lagoons field site. 'CR' refers to the Crescent field site. Core segments from core site 19CR-10 were imaged in two separate CT scans and are designated with core IDs ‘19CR-10-01’ and ‘10CR-10-02’.

Attribute:

Attribute_Label: scan_filename
Attribute_Definition:

The filename of the CT scan TIF image associated with each core.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

CT images are included in this data release in the 'montague_ct.zip' file. Core segments from core 19CR-10 were imaged in two separate CT scans.

Attribute:

Attribute_Label: core_segment_depths_cm
Attribute_Definition:

The depth intervals each core segment represents, in centimeters below the ground surface at the time of core collection.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

CT scans contain 2-3 segments, and the depth intervals, starting with the uppermost core in the CT scan image are listed and separated by semicolons. The supporting file 'montague_ct_supportfile.pdf' included in the CT scan portion of this data release illustrates the locations of each core segment and their respective depth intervals.

Attribute:

Attribute_Label: latitude
Attribute_Definition: Latitude of core site, in decimal degrees.
Attribute_Definition_Source: handheld GPS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 60.17820
Range_Domain_Maximum: 60.19528
Attribute_Units_of_Measure: decimal degrees

Attribute:

Attribute_Label: longitude
Attribute_Definition:

Unique core identification assigned in the field. Core IDs begin with '19' indicating collection in 2019. 'HL' refers to the Hidden Lagoons field site. 'CR' refers to the Crescent field site.

Attribute_Definition_Source: handheld GPS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -147.32948
Range_Domain_Maximum: -147.30783
Attribute_Units_of_Measure: decimal degrees

Overview_Description:

Entity_and_Attribute_Overview: The first line of the csv file is a header line.
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 address
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: United States

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Resource_Description:

Core information are provided in a CSV file (montague_cores.csv) with CSDGM FGDC compliant metadata. The first line of this file is a header.

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: Comma delimited text
Format_Version_Number:

Microsoft Excel v2308 running on Microsoft Windows 10 Enterprise v10.0.19045.

Format_Information_Content:

A Comma Separated Value (CSV) file containing the core ids, associated CT image filenames, core segment depth intervals, and locations of cores collected from Montague Island, AK.

File_Decompression_Technique: none
Transfer_Size: 0.000492

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P13RVDJZ

Access_Instructions:

Data can be downloaded using the Network_Resource_Name link and scrolling to montague_cores.csv in the Sampling Data section.

Fees: None.

Technical_Prerequisites: CSV file can be viewed with any standard text editing software.

Metadata_Reference_Information:

Metadata_Date: 20240329
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_P13RVDJZ/montague_cores_metadata.html>