Identification_Information:
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: 20081022
Title: Bathymetric Position Index (BPI) Structures 10 m grid derived from gridded
bathymetry of Maug Island, Commonwealth of the Northern Mariana
Islands (CNMI), USA.
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage: https://www.soest.hawaii.edu/pibhmc/cms/
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 Maug Island. As
part of the northern islands of the Mariana Islands archipelago,
Maug's offshore shelf, though barely present at Maug, is above -60m.
A deep shelf (below -60m) is inside the crater just outside of the
depressions that form a moat around the post-collapse dome.
Conversely, the southern islands each have a shelf (above -100m) with
escarpments that lead to broad flat areas without forming a deeper shelf.
Purpose: 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, maug_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: 145.186
East_Bounding_Coordinate: 145.263
North_Bounding_Coordinate: 20.069
South_Bounding_Coordinate: 19.989
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: Maug 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 > Maug Island > Maug Island (20N145E0001)
Place_Keyword: COUNTRY/TERRITORY > Northern Mariana Islands > Maug > Maug Island (20N145E0001)
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: https://www.soest.hawaii.edu/pibhmc/CNMI_images/maug_10m_BPIstructures_445.jpg
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)
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: 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.
Logical_Consistency_Report: These data are believed to be logically
consistent though no tests were performed
Completeness_Report: Complete
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Horizontal positioning system: GPS C/A
Horizontal position accuracy: 25 meters
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Range resolution of sonar: varies with depth
Raw sounding resolution: varies with depth
Vertical accuracy of gridded product ~ 1% of water depth
Lineage:
Process_Step:
Process_Description: Bathymetric Position Index Structures were derived from the gridded
multibeam bathymetry (maug_10m) 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 multiple scale factors at other
northern islands within CNMI and applying them to Maug, two scales
50 and 250 best identified fine scale structures for Maug Island while
minimizing noise and optimizing possible reef structures. In order to
promote effective and accurate comparisons of islands, the same scale
factors were used for most islands within CNMI and Guam (with only a
few exceptions). The Terrain Classification Builder (part of the BTM)
was used to create the zone and structure grids. Three ranges of
slope define flats, slopes, and near vertical: x < 5; 5 < x < 70;
x > 70. Depth bounds separated flat structures into shelf (0 to -60m)
and deep shelf (-60 to -1000m) environments. The same depths were used
for all of the northern islands within CNMI.
Process_Date: 20081018
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 803
Column_Count: 869
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 55
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: 147
Latitude_of_Projection_Origin: 0
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Row and Column
Coordinate_Representation:
Abscissa_Resolution: 10
Ordinate_Resolution: 10
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: 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)
Contact_Person: John Rooney
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Resource_Description: Downloadable Data
Distribution_Liability: 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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Arc ASCII
Format_Information_Content: Arc ASCII can be converted to Arc Raster
using ArcToolbox Conversion Tools (ASCIItoRaster).
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://www.soest.hawaii.edu/pibhmc/cms/data-by-location/cnmi-guam/maug-island/maug-island-geomorphology/
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20241215
Metadata_Review_Date: 20090917
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: 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)
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Universal Time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
CoRIS:
CoRIS_ID: 20090917124614
CoRIS_Children: None
CoRIS_Beginning_Date: 20070525
CoRIS_Ending_Date: 20070608
CoRIS_Metadata_Link: https://www.coris.noaa.gov/metadata/records/html/maug_10m_bpistructures.html
CoRIS_Tracking_ID: 4096