Metadata: Identification_Information: Citation: Citation_Information: Originator: Arnell S. Forde Originator: Chelsea A. Stalk Originator: Jennifer L. Miselis Publication_Date: 20201015 Title: Archive of Chirp Subbottom Profile Data Collected in 2019 from Cedar Island, Virginia Geospatial_Data_Presentation_Form: Multimedia presentation Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P9S75Q0U 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/P9S75Q0U Description: Abstract: From August 9 to 14, 2019, researchers from the U.S. Geological Survey (USGS) conducted a geophysical survey to investigate shoreface morphology and geology near Cedar Island, Virginia. The Coastal Sediment Availability and Flux project objectives include understanding the morphologic evolution of the barrier island system on a variety of time scales (months to centuries) and resolving storm-related impacts, post-storm beach response, and recovery. This publication serves as an archive of high-resolution chirp subbottom data, survey trackline map, navigation files, geographic information system (GIS) data, and formal Federal Geographic Data Committee (FGDC) metadata. Processed subbottom profile images are also provided. The archived trace data are in standard Society of Exploration Geophysicists (SEG) SEG Y revision 0 format (Barry and others, 1975). In addition to this data release, the SEG Y files can be downloaded from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov. Bathymetry and backscatter data were also collected during this survey are available in Stalk and others (2020). Purpose: The purpose of this data release is to facilitate the archive of digital chirp subbottom profile data and associated files collected during USGS Field Activity Number 2019-332-FA. Additional survey and data details are available from the USGS CMGDS at, https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-332-FA. Supplemental_Information: Chirp systems use a signal of continuously varying frequency; the system used during this survey produces high-resolution, shallow-penetration (typically less than 75-milliseconds [ms]) profile images of sub-seafloor stratigraphy. The towfish contains a transducer that transmits and receives acoustic energy and is typically towed 1–2 meters (m) below the sea's surface. As transmitted acoustic energy intersects density boundaries, such as the seafloor or sub-surface sediment layers, energy is reflected toward the transducer, received, and recorded by a PC-based seismic acquisition system. This process is repeated at regular intervals (for example, 0.125 seconds [s]) and returned energy is recorded for a specific duration (for example, 50 ms). In this way, a two-dimensional (2D) vertical image of the shallow geologic structure beneath the towfish is produced. The seismic source utilized during 2019-332-FA consisted of an EdgeTech SB-512i towfish running DISCOVER version 4.09 acquisition software and towed on the port side of the research vessel (R/V) Sallenger, approximately 18 m behind the global positioning system (GPS) reference point. The data were acquired using a frequency sweep of 0.5-12 kilohertz (kHz), a 43 kHz sample frequency, and recording length was approximately 200 ms. Based on survey speeds of 3.5-4.5 knots, the shot spacing was approximately 0.450 m. The binary portion of the seismic data is stored in SEG Y rev. 0, IBM float format, which is a standard digital format that can be read and manipulated by most seismic processing software packages; the first 3,200 bytes of the file header are in American Standard Code for Information Interchange (ASCII) format instead of Extended Binary Coded Decimal Interchange Code (EBCDIC) format. The SEG Y formatted trace files have a .sgy extension and may be downloaded and processed with commercial or public domain software such as Seismic Unix (SU) (Cohen and Stockwell, 2010). The printable profiles provided are chirp subbottom profile images that were processed using SU software. Survey Field Activity Collection System (FACS) and geophysical logs are also provided as supplemental information in the download file, 2019-332-FA_logs.zip. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20190809 Ending_Date: 20190814 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.614853 East_Bounding_Coordinate: -75.539711 North_Bounding_Coordinate: 37.695744 South_Bounding_Coordinate: 37.570942 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sub-bottom profiling Theme_Keyword: marine geology Theme_Keyword: geology Theme_Keyword: coastal processes Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: distributions Theme_Keyword: physical habitats and geomorphology Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: seismic reflection profiling Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Seismic reflection Theme_Keyword: Chirp Theme_Keyword: Society of Exploration Geophysicists Theme_Keyword: SEG Y Theme_Keyword: Cedar Island Theme_Keyword: Coastal Sediment Availability and Flux Theme_Keyword: 2019-332-FA Place: Place_Keyword_Thesaurus: Common Geographic Areas Place_Keyword: United States Place_Keyword: Virginia Place_Keyword: North Atlantic 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 USGS Coastal and Marine Hazards and Resources Program. The authors thank Andrew Farmer of the USGS for his assistance in data collection and piloting the R/V Sallenger. This document was improved by scientific/editorial and metadata reviews from Daniel Ciarletta and Breanna Williams of the USGS - St. Petersburg, Florida. Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 10 Version 6.2 (Build 9200); Environmental Systems Research Institute (Esri) ArcGIS 10.6 (Build 8321) Cross_Reference: Citation_Information: Originator: Barry, K.M., Cavers, D.A., and Kneale, C.W. Publication_Date: 1975 Title: Recommended standards for digital tape formats Series_Information: Series_Name: Geophysics Issue_Identification: v. 40, no. 2 Other_Citation_Details: pages 344-352 Online_Linkage: https://doi.org/10.1190/1.1440530 Cross_Reference: Citation_Information: Originator: Cohen, J.K., and Stockwell, J.W., Jr., CWP/SU 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 Cross_Reference: Citation_Information: Originator: Stalk, C.A., Farmer, A.S., and Miselis, J.L. Publication_Date: 20201005 Title: Coastal Single-beam Bathymetry Data Collected in September 2019 from Cedar Island, Virginia Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P927Q8M1 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/P927Q8M1 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The validity or accuracy of marine subbottom profiles is highly qualitative and dependent on equipment and operating condition variables. Due to a problem with the acquisition computer's clock, the wrong day of year (DOY) was recorded to the SEG Y files acquired in the field; however, the correct DOY was recorded to the [proprietary] JSTAR Standard Format (JSF) files (.jsf) that were saved concurrently along with the SEG Y files. To correct this issue, the .jsf files were converted to .sgy format and subsequently used during subbottom processing. During preliminary chirp data processing, visual inspection of the images rendered from the subbottom data showed the presence of an anomaly at approximately 10 ms (two-way travel time [TWT]) on some profiles. This issue was resolved during post-processing and the data were re-checked for quality assurance/quality control compliance. Various equipment issues (for example, GPS or battery) were encountered during data collection; consequently, if post-processed navigation were unavailable for a line, real-time kinematic (RTK) navigation was used instead. Chirp lines with "_env_bp_mod" appended to the file name used post-processed differential global positioning system (DGPS) coordinates for navigation, all other lines used RTK positions recorded during acquisition. Logical_Consistency_Report: These datasets are from one field activity with consistent instrument calibrations. Completeness_Report: A total of 64 seismic lines were collected during this field activity. 11 tracklines had none or partial post-processed navigation. On DOY 222, only the JSF file for line 0002_1416 was recorded in the field, the .sgy file provided in this data release was created during seismic post-processing. The last line collected on DOY 223, 0016_1939, ended prematurely because of battery failure. Due to poor weather conditions, no data were collected on DOY 225 of this survey. Please see the "Corrections" tab of 2019_332_CHIRP_SBES_OpsLog.xlsx for detailed descriptions of changes made during seismic processing. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Both subbottom and bathymetry data were collected aboard a towed seismic sled, which was outfitted with a GPS receiver and single-beam echosounder. An Ashtech Proflex 800 GPS receiver was used to collect position information on the sled. Differential positioning was obtained through post-processing the base station (established on National Geodetic Survey benchmark AJ4587) data to the rover located on the sled. Manufacture stated accuracy for positioning utilizing a DGPS is 0.5-2 m. To ensure consistent spacing between survey lines (for example, 5 m in the nearshore and 10 m for offshore lines), a similar GPS set up was established aboard the R/V Sallenger, where pre-determined trackline locations were imported into HYPACK 2018 navigation software and followed during seismic data collection. Positions from the Proflex receiver located on the R/V Sallenger were recorded and written to seismic trace headers in arcseconds every 1 second (s) and were subsequently converted to latitude and longitude coordinates (World Geodetic System of 1984, WGS84, realization G1762). The approximate 18-m offset between the chirp shot/sled position and ship's GPS antenna reference point were not accounted for during acquisition. For additional positional accuracy and navigation details specific to the GPS and bathymetry data, please refer to the metadata included in Stalk and others (2020). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: These data are not to be used for bathymetry. TWT times shown on the printable profile images are relative to the chirp towfish position, not to the sea surface. Lineage: Process_Step: Process_Description: Chirp acquisition and processing - USGS scientists created a purpose-built, towed sled system to mount the 512i chirp subbottom profiler (just below the water's surface) and enable launching and recovery from the beach. The seismic sled was also configured to help ensure the quality of data collected in exceedingly shallow water depths, such as those observed near the shoreline, over shallow nearshore bars, and within the surf zone. Subbottom data were acquired from one survey platform, the seismic sled, which was towed by the 26-foot R/V Sallenger. 64 lines, equivalent to a total of 299.075 line-kilometers, were surveyed. The SEG Y data were processed with Seismic Unix (Release 44) software to produce gained Graphics Interchange Format (GIF) images of the subbottom profiles included in this data release. A representative chirp data processing sequence consisted of (1) applying a 3000-4000-10,000-12,000 bandpass filter to the analytic data to remove noise from the raw data, prior to creating the envelope seismic data file; corrected files included in this publication have "_env_bp" appended to the line name (2) removing raw navigation data for each shot and converting the SEG Y file to SU format, (3) inserting post-processed DGPS coordinates into the headers, these files have "_env_bp_mod" appended to file name (4) applying automatic gain control, (5) generating a PostScript image of the traces, and (6) converting the PostScript image to a GIF image. Source_Used_Citation_Abbreviation: SEG Y Process_Date: 20200225 Source_Produced_Citation_Abbreviation: SEG Y.gif 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 Process_Step: Process_Description: Navigation acquisition and processing: An Ashtech Proflex 800 unit with a global navigation satellite system antenna (positioned amidships) was used for positioning onboard the R/V Sallenger. Real-time positions from the Proflex were recorded and written to the seismic trace headers via a RS232 cable running from the Proflex receiver to the topside unit of the chirp system. Supplementary acquisition and processing information for the navigation data associated with the seismic sled and GPS are included in Cedar_Island_2019_SBES_metadata.txt (Stalk and others, 2020). Location data were extracted from the SEG Y headers of the processed subbottom profiles, using Seismic Unix software and output as ASCII text files; PROJ.5.1.0 (https://proj4.org/) software was used to project WGS84 latitude and longitude coordinates to Universal Transverse Mercator (UTM) northings and eastings (WGS84, Zone 18, meters). Navigation files for each seismic line, saved by line number, were concatenated into comma-delimited text files for use with Esri ArcGIS software. The final output files are as follows: (1) 2019-332-FA.txt contains unique shotpoint positions (along each line) for the entire survey, (2) s2019-332-FA.txt includes the 1,000-shot-interval locations that were generated to correlate shot locations on the trackline map with evenly spaced 1,000-shot index markers along the top of the printable profile images, and (3) 2019-332-FA_s has the start-of-line locations for each trackline. The concatenated, comma-delimited text files were later imported into ArcGIS and saved as either a point or polyline file (in Esri's shapefile format) for use in the map document (.mxd) included in this archive. Source_Used_Citation_Abbreviation: *_env_bp.txt, *_env_bp_mod.txt Process_Date: 20200729 Source_Produced_Citation_Abbreviation: 2019-332-FA.txt Source_Produced_Citation_Abbreviation: s2019-332-FA.txt Source_Produced_Citation_Abbreviation: 2019-332-FA_s.txt 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 Process_Step: Process_Description: Trackline map creation: 2019-332-FA_location.mxd and associated shapefiles (.shp) were created with Esri ArcGIS 10.6 software. The survey navigation file, 2019-332-FA.txt, was imported into ArcMap 10.6.0.8321 and processed using the ArcScript "Points to Lines" to create a polyline shapefile of the cruise tracklines called 2019-332-FA_trkln. The 1,000-shot-interval and start-of-line files, s2019-332-FA.txt and 2019-332-FA_s.txt, were imported into ArcMap and saved as point shapefiles. A non-proprietary version of the location map was created by utilizing the ArcToolbox "Map to KML" tool, which converted each layer included in the .mxd document to keyhole markup language (.kml) format prior to them being compressed and saved as a .kmz file. The ArcGIS and Google Earth geospatial files provided in this data release are unprojected (geographic coordinates, WGS84). For detailed information about the ArcGIS files provided in this data release, please refer to the individual metadata records (*_metadata.txt and *.shp.xml) accompanying each shapefile and the readme file included in 2019-332-FA_gis.zip. Source_Used_Citation_Abbreviation: 2019-332-FA.txt Source_Used_Citation_Abbreviation: s2019-332-FA.txt Source_Used_Citation_Abbreviation: 2019-332-FA_s.txt Process_Date: 20200729 Source_Produced_Citation_Abbreviation: 2019-332-FA_trkln.shp Source_Produced_Citation_Abbreviation: 2019-332-FA_shots.shp Source_Produced_Citation_Abbreviation: 2019-332-FA_sol.shp Source_Produced_Citation_Abbreviation: 2019-332-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: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 551935 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0197584720 Longitude_Resolution: 0.0248328387 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: 2019-332-FA.txt, s2019-332-FA.txt, 2019-332-FA_s.txt Entity_Type_Definition: These files, which are located in 2019-332-FA_nav.zip, represent the August 2019 seismic navigation data. The attributes described below are for the survey's shotpoint navigation file, 2019-332-FA.txt. For detailed information specific to the ArcGIS data, please see the associated shapefile metadata. Entity_Type_Definition_Source: SEG Y headers, https://seg.org/Publications/tech-stand. Attribute: Attribute_Label: UTMX Attribute_Definition: UTM-X coordinate (Zone 18) Attribute_Definition_Source: Universal Transverse Mercator Coordinate System Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 445722.143 Range_Domain_Maximum: 452416.263 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: UTMY Attribute_Definition: UTM-Y coordinate (Zone 18) Attribute_Definition_Source: Universal Transverse Mercator Coordinate System Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4158363.231 Range_Domain_Maximum: 4172213.632 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Line Attribute_Definition: Trackline name Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: The naming convention used for each subbottom profile line is as follows: FAN_Line#_env_bp or FAN_Line#_env_bp_mod, where 'FAN' is the USGS field activity number assigned to the survey (without the "-FA" suffix, for example, 2019-332), 'Line#' is a number representing a specific trackline, and '_env_bp' denotes that the seismic data were bandpass filtered then output as envelope data files. Files with "_env_bp_mod" appended to the filename used post-processed DGPS coordinates for navigation, all other files used real-time kinematic positions recorded during acquisition. Attribute: Attribute_Label: Shot Attribute_Definition: Shotpoint number Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 24511 Attribute: Attribute_Label: Lon Attribute_Definition: Longitude (decimal degrees) Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.614853 Range_Domain_Maximum: -75.539711 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Lat Attribute_Definition: Latitude (decimal degrees) Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.570942 Range_Domain_Maximum: 37.695744 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: YEAR Attribute_Definition: Year of data acquisition Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2019 Range_Domain_Maximum: 2019 Attribute: Attribute_Label: DOY:HR:MIN:SEC Attribute_Definition: Day of year:hour:minute:second Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Day of year, hour, minute and second of data acquisition. Overview_Description: Entity_and_Attribute_Overview: Binary data file: Seismic trace data are available as binary files in SEG Y format. These files have a .sgy extension and range in size from 4 to 480 MB. These data are included in the download file, 2019-332-FA_segy.zip, and can also be found by going to https://cmgds.marine.usgs.gov. The SEG Y rev. 0 format (Barry and others, 1975) data presented here consists of the following: a 3,600-byte reel identification header, with the first 3,200 bytes consisting of an ASCII header block followed by a 400-byte binary header block, both of which include information specific to line and reel number; a trace data block that follows the reel identification header, with the first 240 bytes of each trace block consisting of the binary trace identification header; and seismic data samples that follow the trace identification header. Entity_and_Attribute_Overview: Graphic image file: Printable versions of the processed subbottom profiles are available as GIF images and are included in the download file, 2019-332-FA_seisimag.zip. Entity_and_Attribute_Overview: Navigation file: Navigation files are available as ASCII text files. Provided are reprojected survey shotpoint navigation, 1,000-shot-interval locations, and start of line files. The final navigation files are provided in 2019-332-FA_nav.zip. Entity_and_Attribute_Overview: GIS file: The GIS data associated with this survey are provided as a compressed zip file, 2019-332-FA_gis.zip, which is composed of an Esri map document, shapefiles, individual shapefile metadata, a Google Earth KMZ file, a folder of processed profile images, and a readme file. The shapefiles provided may also be viewed using other versions of Esri desktop software including their free software Explorer for ArcGIS, which is available at https://www.esri.com/en-us/arcgis/products/explorer-for-arcgis. 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 Contact_Instructions: The SEG Y files included in this data release are also downloadable from the Coastal and Marine Geoscience Data System https://cmgds.marine.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: SEG Y Format_Version_Number: Revision 0 File_Decompression_Technique: Winzip or 7zip Transfer_Size: 7930 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9S75Q0U/data/2019-332-FA_segy.zip Digital_Form: Digital_Transfer_Information: Format_Name: ASCII File_Decompression_Technique: Winzip or 7zip Transfer_Size: 6.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9S75Q0U/data/2019-332-FA_nav.zip Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile, KMZ File_Decompression_Technique: Winzip or 7zip Transfer_Size: 62.3 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9S75Q0U/data/2019-332-FA_gis.zip Digital_Form: Digital_Transfer_Information: Format_Name: GIF File_Decompression_Technique: Winzip or 7zip Transfer_Size: 57.3 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9S75Q0U/data/2019-332-FA_seisimag Fees: None Technical_Prerequisites: Use of SEG Y data requires specialized seismic processing software, such as public domain software Seismic Unix (https://github.com/JohnWStockwellJr/SeisUnix). Metadata_Reference_Information: Metadata_Date: 20201015 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