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Bathymetry Data, 2014-2015, Gateway National Recreation Area

Metadata Updated: September 26, 2025

The side scan sonar survey was done simultaneously with the bathymetry swath survey and used an EdgeTech Model 4125 Towfish bow-mounted from Lookdown at 400 and 900 kHz. The 4125 Towfish utilizes EdgeTech’s Full Spectrum CHIRP technology to produce higher resolution images than a non-CHIRP system. EdgeTech Discovery Software was used to acquire the side scan sonar data using the JSF format at a resolution of about 2.3 cm. All JSF files collected using EdgeTech’s Discover Software were processed using John Gann’s Chesapeake Technology SonarWiz5. Dimensions of contacts should be considered accurate to +/- 30% of the measured dimensions. This system also records the direct arrival intensity data.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date September 12, 2025
Metadata Updated Date September 26, 2025

Metadata Source

Harvested from DOI NPS DCAT-US

Additional Metadata

Resource Type Dataset
Metadata Created Date September 12, 2025
Metadata Updated Date September 26, 2025
Publisher National Park Service
Maintainer
Identifier http://datainventory.doi.gov/id/dataset/nps-datastore-2278670
Data First Published 2017-02-10T00:00:00Z
Data Last Modified 2017-02-10T00:00:00Z
Category geospatial
Public Access Level public
Bureau Code 010:24
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://ddi.doi.gov/nps-data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 599a5c0c-e8f7-414a-aa38-ecf553dbdf87
Harvest Source Id d917c1a9-26b7-43ea-b8c5-c77ec750a850
Harvest Source Title DOI NPS DCAT-US
Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2278670
Metadata Type geospatial
Old Spatial -74.14016,40.3950768,-73.77641,40.65834
Program Code 010:119, 010:118
Source Datajson Identifier True
Source Hash 435f7b86e10843b1ea755399e9d7323dbb0d13efaf623ce29a1ee143723a98d2
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -74.14016, 40.3950768, -74.14016, 40.65834, -73.77641, 40.65834, -73.77641, 40.3950768, -74.14016, 40.3950768}

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