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).

5m grid data

NetCDF/GMT:
Metadata text • Zipped data
Arc ASCII:
Metadata text • Zipped data

Merged Multibeam Bathymetry, IKONOS Derived Depths

View Metadata:
- Coverage Map Metadata text
- 5m Metadata text
Zipped Data:Arc ASCII

Optical Validation

View: Metadata
2002 | 2004 | 2006 | Map
Download: Shapefiles, JPG & metadata
2002 | 2004 | 2006 | All

Geomorphology

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).

5m grid data

Substrate GeoTIFFs:

Hard bottom vs. Soft bottom
Metadata text • Zipped data

Integrated Hard bottom vs. Soft bottom
Metadata text • Zipped data

Slope Arc ASCII:
Metadata text • Zipped data
Rugosity Arc ASCII:
Metadata text • Zipped data
BPI Structures Arc ASCII:
Metadata text • Zipped data
BPI Zones Arc ASCII:
Metadata text • Zipped data

American Samoa: Ofu and Olosega

[ Bathymetry | Backscatter | Optical Validation | Geomorphology ]

The National Park of American Samoa, Ofu Island looking on to Olosega and Ta‘u Islands. (Click on it to open a larger version.)

Ofu and Olosega are part of the Manu‘a Island group in the U.S. Territory of American Samoa; these islands lie approximately 100 km northeast of Tutuila. Ofu and Olosega are steep, high, volcanic islands that lie only 75 m apart and are connected by a bridge and road built across the shallow reef flat. Ofu is the western island, and Olosega is the eastern island in the pair. Shallow multibeam mapping was conducted in 2004 and revealed ~60 sq. km of previously uncharted bank top (<300 m) that extends 0.2 to 2 km from shore and then drops abruptly to oceanic depths. An underwater portion of the National Park of American Samoa, which has exceptionally prolific coral growth, is located on the south shore of Ofu.

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