Geospatial Navigational Data Associated with Chirp Sub-Bottom Profiles Collected During USGS Field Activity Number 2023-325-FA in June and August 2023 from the Chandeleur Islands, Louisiana

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Arnell S. Forde
Publication_Date: 20240515
Title:
Geospatial Navigational Data Associated with Chirp Sub-Bottom Profiles Collected During USGS Field Activity Number 2023-325-FA in June and August 2023 from the Chandeleur Islands, Louisiana
Edition: 1.0
Geospatial_Data_Presentation_Form: Vector digital data (point and polyline)
Larger_Work_Citation:
Citation_Information:
Originator: Arnell S. Forde
Originator: Jennifer L. Miselis
Originator: Chelsea A. Stalk
Originator: Noreen A. Buster
Publication_Date: 20240515
Title:
Chirp Sub-Bottom Profile Geophysical Data Collected in 2023 From the Chandeleur Islands, Louisiana
Edition: 1.0
Series_Information:
Series_Name: U.S. Geological Survey data release
Issue_Identification: doi:10.5066/P1HOLGKM
Publication_Information:
Publication_Place: St. Petersburg, Florida
Publisher:
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
Online_Linkage: https://doi.org/10.5066/P1HOLGKM
Description:
Abstract:
As part of the 2022 Disaster Supplemental project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a nearshore geophysical survey to map the shoreface and inner shelf, as well as characterize stratigraphy near the Chandeleur Islands, Louisiana (LA) in June and August 2023. The purpose of this study was to conduct a morphologic and geologic assessment of the impacts of the 2020 and 2021 hurricane seasons within part of the Breton National Wildlife Refuge (specifically around Hewes Point and Monkey Bayou). These geophysical data will be used to quantify sediment redistribution resulting from storms. The data release associated with this metadata record serves as an archive of high-resolution chirp sub-bottom trace data and navigation files. Shapefiles (.shp) provided in the data release represent point and polyline vector datasets of Field Activity Number (FAN) 2023-325-FA chirp sub-bottom profile trackline, start of line, and 1,000-shot-interval locations.
Purpose:
The purpose of the data release described herein is to archive and disseminate digital chirp sub-bottom profile data and associated files collected during USGS FAN 2023-325-FA (subFANs 23BIM05 and 23BIM10). Additional survey and data details are available from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-325-FA.
Supplemental_Information:
Additional survey and data details are available from the Field Activity Collection System (FACS) logs, which are included in the download file, 2023-325-FA_logs.zip.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20230617
Ending_Date: 20230808
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -88.89780
East_Bounding_Coordinate: -88.83650
North_Bounding_Coordinate: 30.07260
South_Bounding_Coordinate: 29.73750
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:96c1ff05-96bc-4d58-8f4f-4b66ccdcadca
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans
Theme_Keyword: location
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sub-bottom profiling
Theme_Keyword: marine geology
Theme_Keyword: geology
Theme_Keyword: coastal processes
Theme_Keyword: navigational data
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: trackline locations
Theme_Keyword: start of line locations
Theme_Keyword: 1,000-shot-interval locations
Theme_Keyword: barrier island mapping
Theme_Keyword: seismic reflection
Theme_Keyword: 2023-325-FA
Theme_Keyword: chirp
Place:
Place_Keyword_Thesaurus: Common Geographic Areas
Place_Keyword: Louisiana
Place_Keyword: Plaquemines
Place_Keyword: Eastern Louisiana Coastal
Place_Keyword: Breton National Wildlife Refuge
Place_Keyword: Gulf of Mexico
Access_Constraints: None. These data are held in the public domain.
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of the data in future products or derivative research.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Arnell S. Forde
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: Saint Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8000
Contact_Electronic_Mail_Address: aforde@usgs.gov
Data_Set_Credit:
Funding and (or) support for this study were provided by the Department of Interior Supplemental Appropriations for Disaster Recovery Activities Task 1, part of the Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43) and the USGS Coastal and Marine Hazards and Resources Program. The authors thank Andrew Farmer of SPCMSC for his assistance in data collection and piloting the Research Vessel (R/V) Sallenger. Field activity planning performed by Noreen Buster and Jennifer Miselis; data collection conducted by Chelsea Stalk and Jennifer Miselis; and data processing performed by Arnell Forde. This document was improved by scientific/editorial and metadata reviews from Nancy DeWitt and Breanna Williams of the SPCMSC.
Native_Data_Set_Environment:
Environment as of Metadata Creation: Microsoft Windows 10 Version 6.2 (Build 9200); Environmental Systems Research Institute (Esri) ArcMap 10.8.2; MacOS Ventura 13.6.4; Seismic Unix (Release 44); PROJ.5.1.0.
Cross_Reference:
Citation_Information:
Originator: Cohen, J.K.
Originator: Stockwell, J.W., Jr.
Publication_Date: 2010
Title:
Seismic Un*x Release No. 44: An open source software package for seismic research and processing
Publication_Information:
Publication_Place: Golden, Colorado
Publisher: Center for Wave Phenomena, Colorado School of Mines
Online_Linkage: https://github.com/JohnWStockwellJr/SeisUnix
Data_Quality_Information:
Logical_Consistency_Report:
These datasets are from one field activity with consistent instrument calibrations. Seismic data were collected during two surveys, which occurred on June 17 (Leg 1; subFAN 23BIM05) and August 5–8, 2023 (Leg 2; subFAN 23BIM10).
Completeness_Report:
A total of 40 seismic lines were collected during this field activity.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
As the sub-bottom profile data were acquired, the position of the vessel was continuously determined by an Applanix POS MV Wavemaster II inertial aided navigation system (IANS), which is accurate to within 0.5-2 meters (m). Positions from the POS MV IANS were recorded and written to the seismic trace headers every 0.20 seconds, with unique navigation fixes being recorded every second. The approximately 3-meter offset between the chirp and vessel's IANS reference point has not been accounted for in the comma-delimited American Standard Code for Information Interchange (ASCII) navigation or geospatial files.
Lineage:
Process_Step:
Process_Description:
Navigation information was extracted from the seismic trace headers (seismic data available from the data release) using Seismic Unix release 44 software (Cohen and Stockwell, 2010), processed with PROJ.5.1.0 software (https://proj.org/) to generate Universal Transverse Mercator (UTM) Zone 16 North (N) coordinates from latitude and longitude coordinates (World Geodetic System of 1984, WGS84), and then saved as ASCII text files in comma-separated values (CSV) format. Navigation files for each sub-bottom line, saved by line number, were concatenated into comma-delimited text files (.csv) so they could be represented geospatially in geographic information system (GIS) software. The final output files are as follows: (1) 2023-325-FA_nav.csv contains unique shotpoint positions (along each line) for the entire survey, (2) 2023-325-FA_1000sht.csv includes the 1,000-shot-interval locations that were generated to correlate shot locations along the trackline with evenly spaced 1,000-shot index markers along the top of the printable profile images, and (3) 2023-325-FA_sol.csv has the start-of-line locations for each trackline. These CSV files are provided in 2023-325-FA_nav.zip.
Source_Used_Citation_Abbreviation: *.txt
Process_Date: 20240123
Source_Produced_Citation_Abbreviation: 2023-325-FA_nav.csv
Source_Produced_Citation_Abbreviation: 2023-325-FA_1000sht.csv
Source_Produced_Citation_Abbreviation: 2023-325-FA_sol.csv
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Arnell S. Forde
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727-502-8000
Contact_Electronic_Mail_Address: aforde@usgs.gov
Process_Step:
Process_Description:
The reformatted text files referenced in the previous process step were then further processed using Esri ArcMap 10.8.2 software to generate shapefiles. The 1,000-shot navigation file, 2023-325-FA_1000sht.csv, provided in the data release was imported into Esri ArcMap software to produce a geographic representation of the 1,000 shotpoint data collected within the survey area. A 1,000-shot-interval point shapefile (2023-325-FA_1000sht.shp) was generated to correlate shot locations with evenly spaced 1,000-shot index markers along the top of the printable profile images. Likewise, a point shapefile containing the start of line locations for all chirp tracklines, that is based on the reformatted text file 2023-325-FA_sol.csv, was used to create 2023-325-FA_sol.shp. Finally, the 2023-325-FA_nav.csv file containing unique shotpoint positions was imported to ArcGIS to produce a geographic representation of the sub-bottom profile tracklines collected within the survey area. The 'PointsToLine' script (located in the ArcToolbox) was used to create a shapefile (2023-325-FA_trkln.shp) in which individual chirp shotpoints were connected to form tracklines. A non-proprietary version of the shapefiles was created by utilizing the ArcToolbox "Map to KML" tool, which converted each layer to keyhole markup language (KML) format prior to them being compressed (zipped) and saved as a .kmz file (2023-325-FA.kmz). All geospatial files can be found in 2023-325-FA_gis.zip.
Source_Used_Citation_Abbreviation: 2023-325-FA_1000sht.csv
Source_Used_Citation_Abbreviation: 2023-325-FA_sol.csv
Source_Used_Citation_Abbreviation: 2023-325-FA_nav.csv
Process_Date: 20240123
Source_Produced_Citation_Abbreviation: 2023-325-FA_shots.shp
Source_Produced_Citation_Abbreviation: 2023-325-FA_sol.shp
Source_Produced_Citation_Abbreviation: 2023-325-FA_trkln.shp
Source_Produced_Citation_Abbreviation: 2023-325-FA.kmz
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Arnell S. Forde
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Contact_Voice_Telephone: (727) 502-8000
Contact_Electronic_Mail_Address: aforde@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0197889864
Longitude_Resolution: 0.0227019979
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: 298.257223563
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The shapefiles created as part of this geospatial dataset are a derivative of the ASCII CSV navigation files provided in 2023-325-FA_nav.zip, which is included in the data release. The navigation and geospatial files share the same attribute labels and definitions, aside from "FID" and "Shape", which are specific to the .shp files. The detailed attribute descriptions for these files are provided in the data dictionary (DataDictionary_SBP.docx), the metadata are not complete without this file. The survey's trackline file, 2023-325-FA_trkln.shp (40 data records), is a polyline geospatial dataset of all the chirp sub-bottom profile tracklines; 2023-325-FA_1000sht.shp (369 data records) is a point geospatial dataset representing the 1,000th shot interval; and 2023-325-FA_sol.shp (40 data records) provides the start of each seismic line as a point geospatial dataset.
Entity_and_Attribute_Detail_Citation:
The entity and attribute information were generated by the individual or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SPCMSC Data Management Group
Contact_Organization:
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8000
Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov
Resource_Description:
2023-325-FA_shots.shp, 2023-325-FA_sol.shp, 2023-325-FA_trkln.shp, 2023-325-FA.kmz, DataDictionary_SBP.docx
Distribution_Liability:
This publication was prepared by an agency of the United States Government. Although these data were processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: KML
Format_Information_Content:
2023-325-FA_gis.zip contains the survey navigation data represented geospatially using a Google Earth Keyhole Markup Language Zipped (KMZ) file, which is a non-proprietary format, and support information.
File_Decompression_Technique: Winzip or 7zip
Transfer_Size: 1.1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P1HOLGKM/data/2023-325-FA_gis.zip
Digital_Form:
Digital_Transfer_Information:
Format_Name: shapefile
Format_Information_Content:
2023-325-FA_gis.zip contains the survey navigation data represented geospatially using point and polyline shapefiles, which can be read by most GIS software packages, and support information.
File_Decompression_Technique: Winzip or 7zip
Transfer_Size: 1.1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P1HOLGKM/data/2023-325-FA_gis.zip
Fees: None
Technical_Prerequisites:
The geospatial files were created for use with Esri ArcGIS 10.8.2 software. They may also be viewed with QGIS (https://www.qgis.org/en/site/, 2024), Google Earth (https://earth.google.com/, 2024), or other GIS software capable of importing the data.
Metadata_Reference_Information:
Metadata_Date: 20240515
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SPCMSC Data Management Group
Contact_Organization:
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8000
Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@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/spcmsc/2023-325-FA_geospatial_metadata.html>
Generated by mp version 2.9.51 on Thu May 16 10:13:55 2024