Metadata: Identification_Information: Citation: Citation_Information: Originator: Arnell S. Forde Publication_Date: 20220503 Title: 2021-322-FA_trkln: Digital Chirp Subbottom Profile Trackline Data Collected During USGS Field Activity Number 2021-322-FA Offshore of Pensacola Beach, Florida, June 2021 Geospatial_Data_Presentation_Form: Vector Digital Dataset (Polyline) Larger_Work_Citation: Citation_Information: Originator: Arnell S. Forde Originator: Nancy T. DeWitt Originator: James G. Flocks Publication_Date: 20220503 Title: Archive of Chirp Subbottom Profile and Single-Beam Bathymetry Data Collected in 2021 From Santa Rosa Island, Florida Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P9VRSD9J 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/P9VRSD9J Description: Abstract: From June 2 through 9, 2021, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the geologic controls on barrier island evolution and determine Holocene stratigraphy near Santa Rosa Island, Florida (FL). This shapefile represents a line dataset of field activity number (FAN) 2021-322-FA chirp tracklines collected inshore and offshore of Pensacola Beach, FL. Purpose: To aid in the registering of digital chirp seismic reflection data collected during USGS FAN 2021-322-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=2021-322-FA and in the Field Activity Collection System (FACS) and geophysical logs, which are included in the download file, 2021-322-FA_logs.zip (Forde and others, 2022). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20210602 Ending_Date: 20210609 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -87.36180 East_Bounding_Coordinate: -87.16920 North_Bounding_Coordinate: 30.34120 South_Bounding_Coordinate: 30.27280 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:e67efa84-0616-497c-b942-4656f9e7e300 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: 2021-322-FA Theme_Keyword: chirp Place: Place_Keyword_Thesaurus: Common Geographic Areas Place_Keyword: Santa Rosa Place_Keyword: Pensacola Place_Keyword: Escambia Place_Keyword: Okaloosa Place_Keyword: Florida Place_Keyword: Gulf Islands National Seashore 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 Nancy DeWitt, Jim Flocks, Jake Fredericks (former employee), 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); Environment as of Metadata Creation: Microsoft Windows 10 Version 6.2 (Build 9200); Environmental Systems Research Institute (Esri) ArcGIS 10.7.1.11595. 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: Attribute_Accuracy: Attribute_Accuracy_Report: The validity or accuracy of marine subbottom profiles is highly qualitative and depends on equipment and operating condition variables. Logical_Consistency_Report: This dataset is from one field activity with consistent instrument calibrations. Completeness_Report: A total of 95 seismic lines were collected during this field activity, 91 were processed. Lines 3.008, 4.002, and inshore_4A were partial lines containing no usable data and inshore2A was corrupted during acquisition, so they were excluded from this data release. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: As the subbottom 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 were recorded and written to seismic trace headers every second (s). The approximately 3-m 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 (Cohen and Stockwell, 2010), processed with PROJ.5.1.0 (https://proj.org/) software to generate Universal Transverse Mercator (UTM) coordinates (Zone 16 North [N]) 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: 20210805 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 10.7 software to produce a geographic representation of the subbottom profile tracklines collected within the survey area. The "Points to Line" script (located in the ArcToolbox) was used to create a shapefile in which individual chirp shotpoints were connected to form tracklines. Process_Date: 20220216 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: 91 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0197875056 Longitude_Resolution: 0.0227943825 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: 2021-322-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 3400 chirp topside unit during data acquisition and are composed of sequentially increasing numbers. Lines that were collected inshore are denoted by the addition of a prefix, "inshore" or "inshore_", immediately before the line number. If recording was prematurely terminated or reran, due to quality or acquisition issues, sequentially increasing numbers, beginning at .001, were appended to the trackline name (for example, 1.001, 1.002, etc.). 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 in the Esri ArcMap document; a folder containing all these .gif files, named "images", is included in 2021-322-FA_gis.zip. 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 2021-322-FA_nav.zip (Forde and others, 2022) 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, 2021-322-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 Format_Information_Content: 2021-322-FA_gis.zip contains the survey navigation data represented geospatially using a Google Earth Zip-compressed Keyhole Markup Language (KMZ) file, Esri map document, shapefiles, and a folder of processed subbottom profile images (accessible via hyperlinks included in the MXD). This metadata record describes the trackline locations provided in, 2021-322-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: 50.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9VRSD9J/data/2021-322-FA_gis.zip Fees: None Technical_Prerequisites: This shapefile was created for use with Esri ArcGIS 10.7 software. It may also be viewed with Esri public domain software Explorer for ArcGIS, GeoMapApp 3.6.14 (http://www.geomapapp.org, 2022), or other GIS software capable of importing the data. Metadata_Reference_Information: Metadata_Date: 20220503 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