2022-309-FA_trkln: Digital Chirp Subbottom Profile Trackline Data Collected During USGS Field Activity Number 2022-309-FA Offshore of Seven Mile Island, New Jersey, April and May 2022

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Arnell S. Forde
Publication_Date: 20231101
Title:

2022-309-FA_trkln: Digital Chirp Subbottom Profile Trackline Data Collected During USGS Field Activity Number 2022-309-FA Offshore of Seven Mile Island, New Jersey, April and May 2022

Geospatial_Data_Presentation_Form: Vector Digital Dataset (Polyline)
Larger_Work_Citation:

Citation_Information:

Originator: Arnell S. Forde
Originator: Nancy T. DeWitt
Originator: Emily A. Wei
Originator: Jennifer L. Miselis
Publication_Date: 20231101
Title:

Archive of Chirp Subbottom Profile Data Collected in 2022 From Seven Mile Island, New Jersey

Series_Information:

Series_Name: U.S. Geological Survey data release
Issue_Identification: doi:10.5066/P9PY4RR0

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/P9PY4RR0

Description:

Abstract:

From April 29 through May 2, 2022, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the geologic controls on barrier island evolution and sediment transport offshore of Seven Mile Island, New Jersey. Geophysical data were collected as part of the Coastal Sediment Availability and Flux project. This shapefile represents a line dataset of field activity number (FAN) 2022-309-FA chirp tracklines.

Purpose:

To aid in the registering of digital chirp seismic reflection data collected during USGS FAN 2022-309-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=2022-309-FA and in the Field Activity Collection System (FACS) and geophysical logs, which are included in the download file, 2022-309-FA_logs.zip (Forde and others, 2023).

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20220429
Ending_Date: 20220502

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -74.781167
East_Bounding_Coordinate: -74.685219
North_Bounding_Coordinate: 39.106286
South_Bounding_Coordinate: 39.008794

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:53934158-c1e9-4931-acff-a3f7150b15a4

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: 2022-309-FA
Theme_Keyword: chirp

Place:

Place_Keyword_Thesaurus: Common Geographic Areas
Place_Keyword: New Jersey
Place_Keyword: North Atlantic

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, Emily Wei, Jennifer Miselis, 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:

Logical_Consistency_Report:

This dataset is from one field activity with consistent instrument calibrations.

Completeness_Report:

A total of 54 seismic lines were collected during this field activity.

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 Spectra Precision SP90M global navigation satellite system antenna (GNSS) receiver (to collect position information) and a single-beam echosounder. Differential positioning was obtained through post-processing the base station (established on National Geodetic Survey benchmark Permanent Identifier JU0450) data to the rover located on the sled. As the subbottom profile data were acquired, the position of the vessel was continuously determined by an SP90M GNSS receiver. Positions from the SP90M were recorded and written to the seismic trace headers every 0.20 seconds. The approximately 18-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: 20220929
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 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: 20230405
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: 54

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0197524413
Longitude_Resolution: 0.0197524413
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: 2022-309-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 512i chirp topside unit during data acquisition and are composed of a 3-digit Hypack trackline number and a 4-digit timestamp corresponding to the line's start time. The naming convention used for each subbottom line is as follows: x_env_bp, where 'x' is a 7-digit number indicating a specific trackline (for example, 002_1741) and 'env_bp' denotes that the seismic traces were output as an envelope and a bandpass filter was applied. A transit line (029_2041_transit_env_bp) had its file name manually entered and therefore did not follow the aforementioned convention.

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 2022-309-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 2022-309-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, 2022-309-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:

2022-309-FA_gis.zip contains the survey navigation data represented geospatially using a Google Earth 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 trackline locations provided in 2022-309-FA_trkln.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: 30.6

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://coastal.er.usgs.gov/data-release/doi-P9PY4RR0/data/2022-309-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 Esri public domain software Explorer for ArcGIS, GeoMapApp 3.6.15 (http://www.geomapapp.org, 2023), or other GIS software capable of importing the data.

Metadata_Reference_Information:

Metadata_Date: 20230621
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/2022-309-FA_trkln.shp.html>