Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
20100824
Bathymetric Position Index (BPI) Structures 5 m grid derived from gridded
bathymetry of Ni'ihau Island, Hawaii, USA.
raster digital data
http://www.soest.hawaii.edu/pibhmc
http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/main-hawaiian-islands/nihau/geomorphology/
BPI Structures are derived from two scales of a focal mean
analysis on bathymetry and slope. The grid is based on
gridded (5 m cell size) multibeam bathymetry, collected aboard NOAA ship
Hi'ialakai and R/V AHI. BPI Structures was created using the Benthic
Terrain Modeler (http://www.csc.noaa.gov/products/btm/). Cell values
represent one of 13 classes in an index of seafloor terrains. This data set
is for Ni'ihau Island, Hawaii, USA.
The data were derived in support of Coral Reef Conservation
Program goals. Goal 1 is to map all U.S. Coral Reef Ecosystems.
This data set specifically addresses Objective 1 and 4: to develop
high-resolution benthic maps and to characterize priority deep
water reefs and associated habitats. This derivative of
bathymetry provides a GIS layer that may be used for benthic and
essential fish habitat characterization, and for the study of
geologic features. By combining the dataset with bathymetry,
backscatter, other derivatives, and in situ data, they
collectively compose benthic habitat maps which are designed to
be used to understand and predict moderate depth (~20m to ~150m)
benthic habitats for different organisms that inhabit coral
reef ecosystems.
Gridded bathymetry data were collected aboard the NOAA ship Hi'ialakai a 218'research ship and
R/V AHI (Acoustic Habitat Investigator), a 25' survey launch owned and
operated by the NOAA Pacific Islands Fisheries Science Center in
Honolulu, HI. The metadata for the bathymetry is documented in
the product metadata, Nii_5m.asc.
References:
Lundblad et al., 2006, A benthic terrain classification scheme for
American Samoa, Marine Geodesy, 29(2):89 - 111.
http://www.csc.noaa.gov/products/btm/
20050613
20050708
ground condition
As needed
-160.282350
-160.024013
22.056460
21.735042
NCEI Geoportal FilterCoRIS_Metadata
CRCP Project
Benthic Habitat Mapping and Characterization - Northwestern and Main Hawaiian Islands
1217
CoRIS Discovery Thesaurus
Geographic Information > Habitats
ISO 19115 Topic Category
imageryBaseMapsEarthCover
010
CoRIS Theme Thesaurus
EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > geomorphology Mapping
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Habitat Mapping
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetric Position Index Structures
CoRIS Place Thesaurus
COUNTRY/TERRITORY > United States of America > Hawaii > Kauai > Niihau Island (21N160W0001)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Niihau Island > Niihau Island (21N160W0001)
CoRIS Region
MHI
None
These data are not to be used for navigation purposes. Please acknowledge the NOAA Pacific Islands Fisheries
Science Center (PIFSC) Coral Reef Ecosystem Division (CRED) and
the Pacific Islands Benthic Habitat Mapping Center, and the Joint
Institute for Marine and Atmospheric Research (JIMAR) and School
of Ocean and Earth Science and Technology (SOEST), University of
Hawaii as the sources of this information.
http://www.soest.hawaii.edu/pibhmc/MHI_images/Nii_5m_BPIStructures_445.jpg
Gridded Bathymetry Derivative
JPEG
NOAA PIFSC CRED PIBHMC, JIMAR, and SOEST
Not applicable
Unclassified
Not applicable
ArcGIS ASCII file, derived from bathymetry and
slope in ArcGIS 9.3 (Spatial Analyst and Benthic Terrain Modeler)
Data are collected for resource
management and research purposes and are tested for
internal consistency; however, no effort is made to compare
these data to external references or to other published data.
These data are believed to be logically
consistent though no tests were performed
Complete
Horizontal positioning system: GPS C/A
Horizontal position accuracy: 25 meters
Range resolution of sonar: varies with depth
Raw sounding resolution: varies with depth
Vertical accuracy of gridded product ~ 1% of water depth
Bathymetric Position Index Structures were derived from the gridded
multibeam bathymetry (nii_5m) using the Benthic Terrain Modeler
(BTM). The BTM (written for ArcGIS 8.x or 9.x) may be downloaded from
http://dusk2.geo.orst.edu/djl/samoa/tools.html.
BPI Structures are derived from two scales of a focal mean analysis
on bathymetry and slope. After testing 10 experimental
combinations, two scales (50 and 250) best identified fine scale
structures for Ni'ihau Island while
minimizing noise and optimizing possible reef structures (also
after Lundblad et al. 2006; see Supplemental_Information). Three
ranges of slope define flat, slope, and near vertical: x < 5;
5 < x < 70; x > 70. There may be edge effects on both landward and
seaward sides.
20100715
Raster
Grid Cell
7078
5285
1
Universal Transverse Mercator
4
0.9996
-159
0
500000
10000000
Row and Column
5
5
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
none
none
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
John Rooney
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
Downloadable Data
These data are not to be used for navigational purposes.
NOAA makes no warranty regarding these data, expressed or implied,
nor does the fact of distribution constitute such a warranty.
NOAA cannot assume liability for any damages caused by any errors
or omissions in these data, nor as a result of the failure of
these data to function on a particular system.
Arc ASCII
Arc ASCII can be converted to Arc
Raster using ArcToolbox Conversion Tools (ASCIItoRaster).
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/Nii_5m_BPIStructures.zip
None
20190605
20101006
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
Universal Time
None
None
20101006082512
None
20050613
20050708
https://www.coris.noaa.gov/metadata/records/html/nii_5m_bpi_structures.html
6000