1m Depth Contours, 2015, Gateway National Recreation Area

Metadata Updated: November 12, 2020

1m depth contours, derived from Sandy Hook bayside bathymetry, 1m resolution raster. 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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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher National Park Service
Unique Identifier Unknown
Identifier NPS_DataStore_2278682
Data First Published 2017-02-10
Data Last Modified 2017-02-10
Category Geospatial Dataset
Public Access Level public
Bureau Code 010:24
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID D:\IRMA\DataStore\Application\OpenData\v1.1\NPS-DataStore.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
Data Quality True
Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2278682
Program Code 010:118, 010:119
Related Documents https://irma.nps.gov/DataStore/Reference/Profile/2278682
Source Datajson Identifier True
Source Hash c550508fc014ef10bcdf94c111e98e4af499955b
Source Schema Version 1.1
Spatial -74.14016,40.3950768,-73.77641,40.65834
Temporal 2015-07-01/2015-08-01

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