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)
20080915
Slope 60 m grid derived from gridded bathymetry of Guam Island,
Mariana Islands, USA
raster digital data
http://www.soest.hawaii.edu/pibhmc
Slope is derived from gridded (60 m cell size) multibeam
bathymetry, collected aboard NOAA Ship Hiialaka'i and R/V AHI.
Cell values reflect the maximum rate of change (in degrees) in
elevation between neighboring cells derived with the ArcGIS
Spatial Analyst extension. This data set is for the shelf environment
of Guam Island. CNMI and Guam slope maps are all symbolized
with the same classified color ramp (with the exception of a unique
maximum value) in order to provide a standard for qualitative
comparisons between islands.
The data were derived in support of NOAA 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 to deep depth (~10m to 3500m) benthic habitats for different
organisms that inhabit coral reef ecosystems.
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,
guam_60m.txt. (http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi_bathy.htm)
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.
20030922
20070522
ground condition
As needed
144.326
145.116
13.913
12.761
NCEI Geoportal FilterCoRIS_MetadataCRCP ProjectM218 Benthic Habitat Mapping and Characterization in the Pacific Islands Region1217
CoRIS Discovery Thesaurus
Geographic Information > Habitats
ISO 19115 Topic Category
imageryBaseMapsEarthCover
010
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Slope
None
Slope
Bathymetry
Multibeam sonar
None
Guam Island
Mariana Islands
United States Territory
United States of America
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)
COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)
CoRIS Region
Guam
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 (PIBHMC), and
the Joint Institute for Marine and Atmospheric Research (JIMAR)
as the sources of this information.
http://www.soest.hawaii.edu/pibhmc/CNMI_images/guam_60m_slope_445.jpg
Gridded Bathymetry
JPEG
NOAA PIFSC CRED PIBHMC and JIMAR
Not applicable
Unclassified
Not applicable
ArcGIS ASCII file, derived from bathymetry in
ArcGIS 9.3, Spatial Analyst
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
The Spatial Analyst extension was used in ArcMap 9.3 to derive
slope from the gridded (60m) bathymetry.
Spatial Analyst --> Surface Analysis --> Slope
using the following parameters.
Input surface: - Guam_60m; Output measurement - Degree;
Z factor - 1; Output cell size: 60
20080903
Raster
Grid Cell
2113
1408
1
Universal Transverse Mercator
55
0.9996
147
0
500000
0
Row and Column
60
60
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
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).
http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi_gua_geomorph.htm
None
20200329
20090506
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
20090506014121
None
20030922
20070522
https://www.coris.noaa.gov/metadata/records/html/guam_60m_slp.html
2699