Bathymetric Position Index (BPI) Zones Grid Derived from Gridded Bathymetry for Select U.S. Locations in the Pacific

Bathymetric Position Index (BPI) Zones are derived for islands and banks across the U.S. Pacific Islands Region from a focal mean analysis on bathymetry and slope, and were created using the Benthic Terrain Modeler ( Cell values represent one of 4 classes (crest, depression, flat, slope) in an index of seafloor terrains.

The grids are based primarily on gridded multibeam bathymetry collected aboard NOAA Ships Hi'ialakai and Oscar Elton Sette and aboard R/V AHI (Acoustic Habitat Investigator) from 2003 to 2012 by the NOAA Coral Reef Ecosystem Program (CREP). Other sources of available data used to derive BPI Zones for a few locations include estimated depths derived from IKONOS satellite imagery from 2000 to 2002, LIDAR data from 2001 and 2007, and multibeam bathymetry collected in 2001 and 2002.

The BPI Zone grid generated for each location is available via the Pacific Islands Benthic Habitat Mapping Center (PIBHMC) wesite at The data, associated map products, layer files, and detailed documentation (more specific than this pacific-wide record) about the data sources and data processing steps used are included in a zip file for each location.

Data and Resources

Additional Info

Field Value
Last Updated September 18, 2017, 16:58
Created June 10, 2017, 17:49
access_constraints ["Access Constraints: None | Use Constraints: These data are not to be used for navigation purposes. \n\nPlease cite NOAA Coral Reef Ecosystem Program (CREP) when using the data. \n\nSuggested citation:\n\nCoral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2017). Bathymetric Position Index (BPI) Zones Grid Derived from Gridded Bathymetry for Select U.S. Locations in the Pacific. Pacific Islands Benthic Habitat Mapping Center, [access date]\n | Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty."]
bbox-east-long -166.11682
bbox-north-lat 28.453633
bbox-south-lat 23.62792
bbox-west-long -178.378433
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2017"}]
frequency-of-update notPlanned
guid gov.noaa.nmfs.inport:12616
licence []
metadata-date 2017-06-14T21:36:21
metadata-language eng
progress completed
resource-type dataset
responsible-party [{"name": "Pacific Islands Fisheries Science Center", "roles": ["pointOfContact", "custodian"]}]
spatial {"type": "Polygon", "coordinates": [[[-178.378433, 23.62792], [-166.11682, 23.62792], [-166.11682, 28.453633], [-178.378433, 28.453633], [-178.378433, 23.62792]]]}
spatial_harvester true
temporal-extent-begin 2000
temporal-extent-end 2001