2022-328-FA_trkln: Digital Chirp Subbottom Profile Trackline Data Collected During USGS Field Activity Number 2022-328-FA Offshore of Breton Island, Louisiana, August 2022

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Arnell S. Forde
Publication_Date: 20231101
Title:
2022-328-FA_trkln: Digital Chirp Subbottom Profile Trackline Data Collected During USGS Field Activity Number 2022-328-FA Offshore of Breton Island, Louisiana, August 2022
Geospatial_Data_Presentation_Form: Vector Digital Dataset (Polyline)
Larger_Work_Citation:
Citation_Information:
Originator: Arnell S. Forde
Originator: James G. Flocks
Originator: Andrew S. Farmer
Publication_Date: 20231101
Title:
Archive of Chirp Subbottom Profile Data Collected in 2022 From Breton Island, Louisiana
Series_Information:
Series_Name: U.S. Geological Survey data release
Issue_Identification: doi:10.5066/P9Q28MFD
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/P9Q28MFD
Description:
Abstract:
On August 5, 2022, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the geologic controls on barrier island evolution and sediment transport offshore of Breton Island, Louisiana (LA). Geophysical data were collected as part of the Breton Island Post Construction Monitoring project. This shapefile represents a line dataset of field activity number (FAN) 2022-328-FA chirp tracklines.
Purpose:
To aid in the registering of digital chirp seismic reflection data collected during USGS FAN 2022-328-FA.
Supplemental_Information:
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=2022-328-FA and in the Field Activity Collection System (FACS) and geophysical logs, which are included in the download file, 2022-328-FA_logs.zip (Forde and others, 2023).
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20220805
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -89.13140
East_Bounding_Coordinate: -89.09300
North_Bounding_Coordinate: 29.48070
South_Bounding_Coordinate: 29.45830
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:0a78af74-5b87-4a4a-b13e-2b23ce4aa380
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
Theme_Keyword: barrier island mapping
Theme_Keyword: seismic reflection
Theme_Keyword: 2022-328-FA
Theme_Keyword: chirp
Place:
Place_Keyword_Thesaurus: Common Geographic Areas
Place_Keyword: Breton Islands
Place_Keyword: Breton National Wildlife Refuge
Place_Keyword: Breton Sound
Place_Keyword: Breton Wilderness
Place_Keyword: Louisiana
Place_Keyword: Gulf of Mexico
Access_Constraints: None
Use_Constraints:
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: St. 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:
Data collection and processing were performed by Jim Flocks, Andy Farmer, and Arnell Forde of the USGS St. Petersburg Coastal and Marine Science Center.
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.
Data_Quality_Information:
Logical_Consistency_Report:
This dataset is from one field activity with consistent instrument calibrations.
Completeness_Report:
A total of 46 seismic lines were collected during this field activity and are included in this data release (Forde and others, 2023).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Subbottom data were collected from the port side of the R/V Sallenger, which was outfitted with a Spectra Precision SP90M global navigation satellite system antenna (GNSS) receiver (to collect position information). As the subbottom profile data were acquired, the position of the vessel was continuously determined by the SP90M GNSS receiver. Positions from the SP90M were recorded and written to the seismic trace headers every 0.20 seconds. The approximately 3-meter offset between the chirp and GPS antenna has not been accounted for in the comma-delimited American Standard Code for Information Interchange (ASCII) navigation files and trackline map.
Lineage:
Process_Step:
Process_Description:
Navigation files were extracted from the seismic trace headers using Seismic Unix release 44 software, processed with PROJ.5.1.0 software to generate Universal Transverse Mercator (UTM) 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.
Process_Date: 20230112
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 were imported into Esri ArcMap 10.8.2 software to produce a geographic representation of the subbottom profile tracklines collected within the survey area. The PointsToLine script (located in the ArcToolbox) was used to create a shapefile in which individual chirp shotpoints were connected to form tracklines.
Process_Date: 20230426
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
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 46
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0197905763
Longitude_Resolution: 0.0226039207
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:
Detailed_Description:
Entity_Type:
Entity_Type_Label: 2022-328-FA_trkln.shp Attribute Table
Entity_Type_Definition:
Table containing attribute information associated with the dataset.
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Line
Attribute_Definition: Trackline name
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Line numbers were automatically assigned by the EdgeTech 3100P chirp topside unit during data acquisition. Trackline names consist of sequentially increasing numbers, with the survey date (20020805) serving as a prefix that is followed by a UTC timestamp (for example, 134905) corresponding to when the line was collected.
Attribute:
Attribute_Label: Image
Attribute_Definition: Graphics Interchange Format (GIF) image name
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
This attribute field provides the name of the subbottom profile image (.gif) that is associated with each trackline as a hyperlinked GIF; a folder containing all these .gif files, named "images", is included in 2022-328-FA_gis.zip (Forde and others, 2023).
Overview_Description:
Entity_and_Attribute_Overview:
Navigation files are available as ASCII delimited text files in CSV format. The final navigation files are provided in 2022-328-FA_nav.zip (Forde and others, 2023) and represent the reprojected survey shotpoint navigation, 1,000-shot-interval locations, and start of line files. The entity and attribute information provided here describes the tabular data associated with the shapefile, 2022-328-FA_trkln.shp. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the dataset.
Entity_and_Attribute_Detail_Citation:
The entity and attribute information were generated by the individual and (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: 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
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: Shapefile, MXD, KMZ, GIF, PNG
Format_Information_Content:
2022-328-FA_gis.zip contains the survey navigation data represented geospatially using a Google Earth KMZ, Esri map document (MXD), shapefiles, a folder of processed subbottom profile images (accessible via hyperlinks included in the MXD), and survey area map. This metadata record describes the trackline locations provided in 2022-328-FA_trkln.shp, which is one of the three Esri shapefiles included in the geographic information system (GIS) data ZIP file.
File_Decompression_Technique: Winzip or 7zip
Transfer_Size: 11.9
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P9Q28MFD/data/2022-328-FA_gis.zip
Fees: None
Technical_Prerequisites:
This shapefile was created for use with Esri ArcGIS 10.8.2 software. It may also be viewed with QGIS (https://www.qgis.org/en/site/, 2023), GeoMapApp 3.6.15 (http://www.geomapapp.org, 2023), or other GIS software capable of importing the data.
Metadata_Reference_Information:
Metadata_Date: 20231025
Metadata_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
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/2022-328-FA_trkln.shp.html>
Generated by mp version 2.9.51 on Wed Nov 1 14:59:11 2023