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Bathymetric Position Index (BPI) Zones 5 m grid derived from gridded bathymetry of of Galvez Bank, South Galvez Bank, and 11-Mile Reef, Territory of Guam, USA.

Published by Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA National Marine Fisheries Service (NMFS) | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2012-11-30T00:00:00.000+00:00
BPI Zones are derived from a focal mean analysis on bathymetry and slope. The grid is based on gridded (5 m cell size) multibeam bathymetry, collected aboard NOAA Ship Oscar Elton Sette. BPI Zones was created using the Benthic Terrain Modeler (https://coast.noaa.gov/digitalcoast//tools/btm/). Cell values represent one of 4 classes (crest, depression, slope, flat) in an index of seafloor terrains.

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