Service Description: Data on bottom hardness from sampling conducted in Southern New Jersey.
Service ItemId: ae9a3a0803284482839f812714c10c3e
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
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Description: Bottom hardness and bathymetry:Sidescan sonar maps of bottom hardness and depth (bathymetry) were created using a Humminbird Helix 10 Chirp SI GPS unit with the Auto Chart feature which record data to the Auto Chart Zero Lines sd card. The recording feature of the Auto Chart program is turned on and set to record the bottom hardness of the area the boat is covering. Depth is recorded automatically. The Zero lines card is then put into the Auto Chart Pro Software on a PC and converted into maps. Humminbird data is encrypted and not available for export into other formats but the maps produced by the Auto Chart Pro Software are georeferenced allowing them to be properly placed into a GIS.
Hard bottom sample composition:Point data were also collected using the Humminbird Helix 10 Chirp SI GPS after using the sidescan sonar to identify hard bottom. A small sampling dredge or oyster tongs were used to determine the presence of oysters, other benthic organisms, and cultch on the hard bottom areas. Data, consisting of what was collected, were recorded with the corresponding gps co-ordinates.
Copyright Text: Data collected by the Rutgers Haskin Research Lab and The Pew Charitable Trust. GIS datasets created by the NJAES Office of Research Analytics.
Spatial Reference: 4326 (4326)
Initial Extent:
XMin: -75.5600397390555
YMin: 38.6272398592967
XMax: -74.6145741441526
YMax: 39.7583508725535
Spatial Reference: 4326 (4326)
Full Extent:
XMin: -75.45273
YMin: 38.9470600000001
XMax: -74.75494
YMax: 39.4407400000001
Spatial Reference: 4326 (4326)
Units: esriDecimalDegrees
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