Benthic Habitat Data

Bathymetry

Zipped data files contain 1) grid data file (GMT or ASCII), 2) high-res JPG of image, and 3) explanatory metadata text file (identical to linked file listed below).

20m grid data
5m grid data
Merged Multibeam Bathymetry, IKONOS Derived Depths

Zipped data files contain 1) Arc ASCII file, 2) layer (.lyr) file for symbology, 3) high-res JPG of image, and 4) explanatory metadata text file (identical to linked file listed below).

20m grid data files

PRIA: Johnston Atoll

[ Bathymetry | Backscatter | Optical Validation | Geomorphology ]

Image of Johnston Atoll. Johnston Atoll includes 4 islands and a small lagoon and is located at 16°45′N 169°31′W in the Central Pacific, about 885 km (478 nautical miles) south and slightly west of French Frigate Shoals (FFS) in the NWHI. It is a National Wildlife Refuge under the USFWS and public access is by permit only; permits are usually issued for scientists and educators. The atoll was discovered when the American brig Sally ran aground in 1796. The largest island was named Johnston Island for the captain of the frigate HMS Cornwallis from which the island was sighted in 1807. More…

 

Click thumbnail maps below to explore PIBHMC's data sets.

Bathymetry

Go to Johnston bathymetry page.

Backscatter

Go to Johnston Island backscatter page.

Optical Validation

Go to Johnston optical validation page.

Go to Johnston Geomorphology page.

 

 

 

 

 

 

 

 

 

 

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