Chirp sub-bottom data collected in the Great Salt Lake, Utah, during USGS field activity 2021-615-FA

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

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: Alicia F. Balster-Gee
Originator: Daniel S. Brothers
Originator: Christopher B. DuRoss
Originator: Jared W. Kluesner
Originator: Daniel C. Powers
Originator: Jackson E. Currie
Originator: Peter Dal Ferro
Originator: Jessica A. Jobe
Publication_Date: 20250904
Title:

Chirp sub-bottom data collected in the Great Salt Lake, Utah, during USGS field activity 2021-615-FA

Geospatial_Data_Presentation_Form: seismic-reflection data in SEG-Y format
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P13FCNPJ

Publication_Information:

Publication_Place:

Pacific Coastal and Marine Science Center, Santa Cruz, California

Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested Citation: Balster-Gee, A.F., Brothers, D.S., DuRoss, C.B., Kluesner, J.W., Powers, D.C., Currie, J.E., Dal Ferro, P., Jobe, J.A., 2025, Chirp sub-bottom data collected in the Great Salt Lake, Utah during USGS field activity 2021-615-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P13FCNPJ.

Online_Linkage: https://doi.org/10.5066/P13FCNPJ

Description:

Abstract:

This data release contains 57 high-resolution chirp sub-bottom profiles collected in the southern Great Salt Lake, Utah. Data were collected by the U.S. Geological Survey (USGS) in June of 2021 during USGS field activity 2021-615-FA.

Purpose:

This high-resolution sub-bottom dataset was acquired in the Great Salt Lake, Utah, to investigate paleoseismic evidence associated with the Great Salt Lake Fault. The dataset aims to image subsurface sedimentary structures and stratigraphy to identify and characterize past earthquake events, contributing to a better understanding of the fault’s seismic history, recurrence intervals, and associated geohazards in the region.

Supplemental_Information:

Additional information about the field activity or activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-615-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: 20210619
Ending_Date: 20210702

Currentness_Reference: Ground condition at the time data were collected.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -112.482800239
East_Bounding_Coordinate: -112.183759519
North_Bounding_Coordinate: 41.120925762
South_Bounding_Coordinate: 40.747385234

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:68a39c7a-876d-4666-8540-adb177db983c

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
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: marine geophysics
Theme_Keyword: sub-bottom profiling
Theme_Keyword: geospatial datasets

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: data processing
Theme_Keyword: seismic reflection profiling
Theme_Keyword: Global Positioning System (GPS) observations

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: EHP
Theme_Keyword: Department of the Interior
Theme_Keyword: DOI
Theme_Keyword: field activity number 2021—615-FA
Theme_Keyword: seismic reflection

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: State of Utah
Place_Keyword: Great Salt Lake

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. These data are marked with a Creative Common CC0 1.0 Universal License. Please recognize and acknowledge the U.S. Geological Survey as the originator of the dataset and in products derived from these data. This information is not intended for navigation purposes.

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: 2021-615-FA.GreatSaltLake.chirp.preview.png
Browse_Graphic_File_Description:

Map of chirp sub-bottom tracklines in the southern Great Salt Lake.

Browse_Graphic_File_Type: PNG

Native_Data_Set_Environment:

Field seismic data was collected with EdgeTech Discover acquisition software. Chirp lines 1-25 were acquired with and EdgeTech 424 subbottom profiler and lines 26-42 were acquired with an EdgeTech 216 subbottom profiler.Data were processed using Shearwater Reveal (v. 5.1) on a CentOS Linux 7 operating system. Seismic trackline navigation was processed using QGIS Desktop (v. 3.40.8) on a Windows 10 operating system.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Quality control of attribute accuracy was conducted during field data collection and processing workflows. Some seismic profiles have gaps in them due to system crashes. Minor swell correction artifacts exist at line starts and ends as well as in areas where lake floor amplitudes are low.

Logical_Consistency_Report:

Quality control was conducted during acquisition and processing to ensure consistency of SEG-Y header navigation and seismic-reflection data that matches bathymetry along the tracklines.

Completeness_Report:

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:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

An Applanix POS-MV (Position and Orientation System for Marine Vessels) Elite was used to position the source vessel during data collection. The Applanix POS-MV Elite has a stated positional accuracy of 0.5-2 meters (https://www.applanix.com/downloads/products/specs/posmv/POS-MV-ELITE.pdf). Accuracies of final products may be lower due to total propagated uncertainties of the mapping systems, which include the position and motion compensation system and navigation error.

Lineage:

Process_Step:

Process_Description:

Raw SEG-Y format seismic shots were imported into Shearwater Reveal 5 (seismic software), and navigational data was converted to UTM zone 12N and stored in header bytes 81 and 85 with a -1000 scalar (scalar recoded in header byte 71). Further processing included transforming to envelope, applying water column and bottom mute, and performing swell correction using the peak trace amplitude time-averaged over the swell period (typically between 21 and 55 traces). Sometimes, two passes of swell correction were required when there were mixed swell periods. SEG-Y files were named ###.swell.segy, where ### is the line number. SEG-Y files were zipped into the file 2021-615-FA.GreatSaltLake.chirp.data.zip.

Process_Date: 20250716

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: 57

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 12
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -111.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001

Planar_Distance_Units: Meter

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview: Seismic Shots with Time Stamp in standard SEG-Y file format
Entity_and_Attribute_Detail_Citation:

Society of Exploration Geophysicists (SEG) Technical Standards, available for download at http://seg.org/Publications/SEG-Technical-Standards

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

Resource_Description:

These data are available in SEG-Y format (###.swell.segy where ### is the line number) and are contained in a single zip file (2021-615-FA.GreatSaltLake.chirp.data.zip) accompanied by CSDGM FGDC-compliant metadata.

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: SEG-Y
Format_Version_Number: SEG-Y rev 1
Format_Information_Content:

Zip file contains the processed seismic data per navigation line.

File_Decompression_Technique:

The zip file can be decompressed with any zip utility (for example, 7zip, Keka, WinZip).

Transfer_Size: 8400

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P13FCNPJ

Access_Instructions:

Data can be downloaded using the Network_Resource_Name link and scrolling down to the Seismic Data section.

Fees: None.

Technical_Prerequisites:

Use of SEG-Y data requires specialized software, such as ProMax and Seisworks by Landmark Geophysical; FOCUS and SeisX by Paradigm Geophysical; SPW by Parallel Geoscience; VISTA by Seismic Image Software; SeiSee by Dalmorneftegeophysica (DMNG), amongst others.

Metadata_Reference_Information:

Metadata_Date: 20250904
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_P13FCNPJ/2021-615-FA.chirp.metadata.html>