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
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Northwest Hawaiian Islands: Nihoa Island

[ Bathymetry | Backscatter | Optical Validation | Geomorphology ]

IKONOS satellite image of Photo of Nihoa Island.

IKONOS satellite image of Photo of Nihoa Island. (Click thumbnail map to open a larger version.)

Nihoa Island, with its unique 300 meter basalt cliffs, is about 1 sq. km. and is the most southeastern island in the Northwestern Hawaiian Islands at 23 4'N, 161 55'W. Approximately 575 sq. km. of coral reef habitat surrounds the island. As many as 175 Polynesians lived there between the 11th and 18th century. It was discovered by Europeans in 1789, and wasn't officially annexed as part of the Hawaiian Kingdom until 1857. Nihoa's fragile ecosystem is protected by permit requirements to regulate the number and purpose of visitors.

Reference: Hawaiian Atolls

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

Bathymetry

Small Nihoa 20 meter grid image.

 

 

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