Citation:
Citation_Information:
Originator:
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)
Publication_Date: 20090219
Title:
Bathymetric Position Index (BPI) Structures 10 m grid derived from gridded
bathymetry of Agrihan Island, Commonwealth of the Northern Mariana
Islands (CNMI), USA.
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage: http://www.soest.hawaii.edu/pibhmc
Description:
Abstract:
BPI Structures are derived from two scales of a focal mean
analysis on bathymetry and slope. The grid is based on
gridded (10 m cell size) multibeam bathymetry, collected aboard NOAA
Ship Hi'ialakai and R/V AHI, and it was created using the Benthic
Terrain Modeler (
https://coast.noaa.gov/digitalcoast/tools/btm.html). Cell values
represent one of 14 classes in an index of seafloor terrains. This
data set is for the shelf and slope environments of Agrihan Island. As
part of the northern islands of the Mariana Islands archipelago,
Agrihan's offshore shelf, a small area on the south side, is above -60m.
A deep shelf (below -60m) is northwest of the island and forms a small
plateau. Conversely, the southern islands each have a shelf (above -100m)
with escarpments that lead to broad flat areas without forming a deeper
shelf.
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 (~10m to 800m)
benthic habitats for different organisms that inhabit coral
reef ecosystems.
Supplemental_Information:
Gridded multibeam data were collected aboard the Hi'ialakai, a
218' United States National Oceanographic and Atmospheric
Administration (NOAA) research ship, and aboard the 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, agrihan_10m.txt.
(
http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi_bathy.htm)
References:
Lundblad et al., 2006, A benthic terrain classification scheme for
American Samoa, Marine Geodesy, 29(2):89 - 111.
https://coast.noaa.gov/digitalcoast/tools/btm.html
The terrestrial elevation data shown in the map for this data set are
SRTM Finished 3 arc sec Shaded Relief. They were collected during
NASA's Shuttle Radar Topograph Mission (SRTM). For more information
on the mission, go to:
http://www2.jpl.nasa.gov/srtm/faq.html#data. The data are available
from the United States Geological Survey (USGS) as reformatted
elevation data that are consistent with other Digital Elevation Models.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070525
Ending_Date: 20070608
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 145.599
East_Bounding_Coordinate: 145.721
North_Bounding_Coordinate: 18.842
South_Bounding_Coordinate: 18.708
Keywords:
Theme:
Theme_Keyword_Thesaurus: NCEI Geoportal Filter
Theme_Keyword: CoRIS_Metadata
Theme:
Theme_Keyword_Thesaurus: CRCP Project
Theme_Keyword:
Benthic Habitat Mapping and Characterization - Commonwealth of the Northern Mariana Islands and Guam
Theme_Keyword: 1398
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Habitats
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: 010
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword:
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetric Position Index Structures
Theme_Keyword:
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > geomorphology Mapping
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetric Position Index Structures
Theme_Keyword: Bathymetry
Theme_Keyword: Multibeam sonar
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Agrihan Island
Place_Keyword: Commonwealth of the Northern Mariana Islands
Place_Keyword: United State of America
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Agrihan Island > Agrihan Island (18N145E0002)
Place_Keyword:
COUNTRY/TERRITORY > Northern Mariana Islands > Agrihan Island > Agrihan Island (18N145E0002)
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: CNMI
Access_Constraints: None
Use_Constraints:
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 (PIBHMC), and
the Joint Institute for Marine and Atmospheric Research (JIMAR)
as the sources of this information.
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description: Gridded Bathymetry Derivative
Browse_Graphic_File_Type: JPG
Data_Set_Credit: NOAA PIFSC CRED PIBHMC and JIMAR
Security_Information:
Security_Classification_System: Not applicable
Security_Classification: Unclassified
Security_Handling_Description: Not applicable
Native_Data_Set_Environment:
ArcGIS ASCII file, derived from bathymetry and
slope in ArcGIS 9.3 (Spatial Analyst and Benthic Terrain Modeler)
