Metadata: Identification_Information: Citation: Citation_Information: Originator: Arnell S. Forde Publication_Date: 20240129 Title: 2023-310-FA_sol: Digital Chirp Subbottom Profile Start of Line Data Collected During USGS Field Activity Number 2023-310-FA Offshore of Kailua, Hawaii, May 2023 Geospatial_Data_Presentation_Form: Vector Digital Dataset (Point) Larger_Work_Citation: Citation_Information: Originator: Arnell S. Forde Originator: Emily A. Wei Originator: Chelsea A. Stalk Publication_Date: 20240129 Title: Archive of Chirp Subbottom Profile Data Collected in 2023 From Oahu, Hawaii Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P9I2T4ZE 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/P9I2T4ZE Description: Abstract: From May 7-13, 2022, the U.S. Geological Survey (USGS) conducted a geologic assessment, including bathymetric mapping, near Kailua, Hawaii in support of efforts to construct an artificial coral reef offshore of Marine Corps Base Hawaii (MCBH). Geophysical data were collected as part of the Coastal Sediment Availability and Flux and Defense Advanced Research Protection Agency (DARPA) Reefense projects. Geophysical data were collected as part of the Coastal Sediment Availability and Flux and Defense Advanced Research Protection Agency (DARPA) Reefense projects. This shapefile represents a point dataset of field activity number (FAN) 2023-310-FA chirp subbottom profile start of trackline locations. Purpose: To aid in the registering of digital chirp subbottom profile data collected during USGS FAN 2023-310-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=2023-310-FA and in the Field Activity Collection System (FACS) and geophysical logs, which are included in the download file, 2023-310-FA_logs.zip (Forde and others, 2023). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20230507 Ending_Date: 20230513 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -157.795000 East_Bounding_Coordinate: -157.724867 North_Bounding_Coordinate: 21.410228 South_Bounding_Coordinate: 21.446028 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:a5a6423b-8e8c-4a3c-b929-77aac1edf179 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: start of line locations Theme_Keyword: barrier island mapping Theme_Keyword: seismic reflection Theme_Keyword: 2023-310-FA Theme_Keyword: chirp Place: Place_Keyword_Thesaurus: Common Geographic Areas Place_Keyword: Hawaii Place_Keyword: Oahu Place_Keyword: Kailua Place_Keyword: Southwest Pacific 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 Chelsea Stalk, Emily Wei, 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) ArcGIS 10.8.2. 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. Visual inspection of the shapefile created from the navigation data did not show any major anomalies. Logical_Consistency_Report: This dataset is from one field activity with consistent instrument calibrations. No seismic reflection data were collected on DOY 128 (May 8, 2023) or 129 (May 9, 2023). Completeness_Report: A total of 84 seismic lines were collected during this field activity. Three lines and their associated navigation were excluded from this data release (Forde and others 2023), due to equipment or acquisition issues, resulting in unusable data files. 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 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 files and trackline map. Lineage: Process_Step: Process_Description: Navigation files were extracted from the seismic trace headers using Seismic Unix release 44 software (https://github.com/JohnWStockwellJr/SeisUnix) and custom scripts, processed with PROJ.5.1.0 software (https://proj.org/) to generate Universal Transverse Mercator (UTM) Zone 4 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. A custom script was created to produce unique navigation fixes for each line and for all instances where the shot was equal to 1, that data point was output into a new text file. All the shotpoints with a shot value equal to 1 were concatenated in the CSV file, 2023-310-FA_sol.csv, which represents the start of each trackline collected during the survey. Process_Date: 20230807 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 file was imported into Esri ArcMap 10.8 software to produce a geographic representation of the shotpoint data collected within the survey area. ArcMap was used to create a point shapefile containing start of line locations for all chirp tracklines. Process_Date: 20231010 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: Entity point Point_and_Vector_Object_Count: 81 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0198168337 Longitude_Resolution: 0.0211353994 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: 2023-310-FA_sol.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: UTMX Attribute_Definition: UTM-X easting coordinate Attribute_Definition_Source: Universal Transverse Mercator (WGS 1984, Zone 4N) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 624877.207 Range_Domain_Maximum: 632135.187 Attribute: Attribute_Label: UTMY Attribute_Definition: UTM-Y northing coordinate Attribute_Definition_Source: Universal Transverse Mercator (WGS 1984, Zone 4N) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2368084.86 Range_Domain_Maximum: 2372047.496 Attribute: Attribute_Label: Line Attribute_Definition: Trackline name Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Line numbers were assigned by the EdgeTech 424 chirp topside unit during data acquisition and are composed of an alphanumeric identifier and trackline number. The naming convention used for each subbottom line is as follows: xy_line#, where 'x' represents a partial FAN, 'y' denotes the survey area, which is either Marine Corps Base Hawaii (MCBH) or Marine Corps Base Hawaii Coconut Island (MCBH_CI), and 'line#' is the trackline number (for example, 2023_310_MCBH_CI_line01 and 2023_310_MCBH_line01). If recording was prematurely terminated or reran, due to quality or acquisition issues, characters (specifically "a" or "b") or sequentially increasing numbers (such as .001, .002, etc.), were manually appended to the trackline name. 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: 1 Attribute: Attribute_Label: Lon Attribute_Definition: Longitude Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -157.795 Range_Domain_Maximum: -157.724867 Attribute: Attribute_Label: Lat Attribute_Definition: Latitude Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 21.410228 Range_Domain_Maximum: 21.446028 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: 2023 Range_Domain_Maximum: 2023 Attribute: Attribute_Label: DOY_HR_MIN 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, in Coordinated Universal Time. Overview_Description: Entity_and_Attribute_Overview: The entity and attribute information provided here describes the tabular data associated with the shapefile, 2023-310-FA_sol.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. Navigation files are available as ASCII delimited text files in CSV format. The final navigation files are provided in 2023-310-FA_nav.zip (Forde and others, 2023) and represent the reprojected survey shotpoint navigation, 1,000-shot-interval locations, and start of line files. 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: 2023-310-FA_gis.zip (Forde and others, 2023) contains the survey navigation data represented geospatially using a Google Earth Keyhole Markup Language Zipped (KMZ), Esri map document (MXD), shapefiles, and a folder of processed subbottom profile images (accessible via hyperlinks included in the MXD). This metadata record describes the start of line locations provided in 2023-310-FA_sol.shp, which is one of three Esri shapefiles included in the geographic information system (GIS) data ZIP file. File_Decompression_Technique: Winzip or 7zip Transfer_Size: 20.3 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9I2T4ZE/data/2023-310-FA_gis.zip Fees: None Technical_Prerequisites: This shapefile was created for use with Esri ArcGIS 10.8 software. It may also be viewed with QGIS (https://www.qgis.org/en/site/, 2023), GeoMapApp 3.6.15 (https://www.geomapapp.org, 2023), or other GIS software capable of importing the data. Metadata_Reference_Information: Metadata_Date: 20240129 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