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)
20140821
Mosaic of gridded multibeam bathymetry and bathymetry derived from multispectral World View-2 satellite imagery of Sarigan Island, Territory of Mariana, USA.
raster digital data
http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/cnmi-guam/sarigan-island/sarigan-island-bathymetry/
https://www.soest.hawaii.edu/pibhmc/cms/
Gridded multibeam bathymetry is integrated with bathymetry
derived from multpectral World View-2 satellite data. Gridded (10 m cell
size) multibeam bathymetry collected aboard NOAA Ship Hiialaka'i and
R/V AHI in 2007, a 224’ (68 m) United States National Oceanographic and Atmospheric
Administration research ship. Bathymetry values shallower than ~20 m were derived
by gauging the reletive attenuation of coastal, blue, green and yellow spectral
radiance as a function of depth. A multiple linear regression analysis of coastal,
blue, green and yellow band spectral values against depth determined the variables
of y-intercept, coastal,blue, green and yellow slope values. Variables then used
in multivariate slope intercept formula to derive depth. Digital image processing
to derive depths conducted with the ENVI 4.8 software program while data editing
and integration was performed using ArcGIS 10.1 This data set is for the shelf
environment of Sarigan Island, Mariana.
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 integration of derived
bathymetry with multibeam sonar data provides a GIS layer with
expanded spatial coverage that may be used for benthic and essential
fish habitat characterization, and for the study of geologic features.
By combining the dataset with other bathymetry, backscatter, derivatives,
and in situ data, they collectively compose benthic habitat maps
designed to be used to understand and predict shallow depth (0m to 600m)
benthic habitats for 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 operated by the NOAA
Pacific Islands Fisheries Science Center in Honolulu, HI. The
metadata for the bathymetry is documented in the product metadata,
Sarigan_10m.txt.
http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/cnmi-guam/sarigan-island/sarigan-island-bathymetry/
Original World View-2 imagery was purchased to support the Pacific Islands
Geographic Information System (GIS) project and National Ocean Service's
(NOS) coral mapping activities. Orthographically corrected World View-2 Imagery
was provided by NOAA. The metadata for this World View-2 imagery is documented
in the original product metadata, 13FEB09011102-M2AS-052760757110_04_P003
(http://www.soest.hawaii.edu/pibhmc/).
20070525
20140419
ground condition
As needed
145.745
145.827
16.738
16.673
NCEI Geoportal FilterCoRIS_Metadata
CRCP Project
Benthic Habitat Mapping and Characterization in the Pacific Islands Region
467
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Water Depth
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing > Satellite (digital scans) > WorldView-2
CoRIS Discovery ThesaurusGeographic Information > Bathymetry
None
Slope
Bathymetry
Multibeam sonar
ISO 19115 Topic Category
elevation
006
None
Sarigan Island
Commonwealth of the Northern Mariana Islands
United States of America
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Sarigan Island > Sarigan Island (16N145E0003)
COUNTRY/TERRITORY > Northern Mariana Islands > Sarigan Island > Sarigan Island (16N145E0003)
None
These data are not to be used for navigation purposes.
Please acknowledge the NOAA Coral Reef Ecosystem Division,
Pacific Islands Fisheries Science Center and the Pacific Islands Benthic
Habitat Mapping Center, School of Ocean and Earth Science and Technology, University
of Hawaii as the sources of this information.
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
USA
808 725-5360
pibhmc@soest.hawaii.edu
http://www.soest.hawaii.edu/pibhmc/CNMI_images/SAR_DBMB_10m_445.jpg
Gridded Bathymetry
jpg
Benthic Habitat Mapping Group, Coral Reef Ecosystem Division
(CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
Not applicable
Unclassified
Not applicable
ArcGIS ASCII file or ArcGIS Grid file,
bathymetry derived from 2x2m multispectral satellite imagery (World View-2)
using ENVI 4.8, multibeam and derived bathymetry were integrated using
ArcGIS 10.1
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 sonar product: ~ 1% of water depth
Vertical accuracy of derived bathymetry product: 2 meter range
Multiple tools in ENVI 4.8 were used to complete the following
processing steps: Data conversion from digital number to radiance,
correction for atmosphere and water surface reflection, masking of
non-applicable values, and bathymetric derivation using variables
from multiple linear regression analysis. Multiple tools in
ArcGIS 10 were used for dataset integration and to extract values
for the multiple linear regression analysis and subsequent error
analyses. The Microsoft program Excel was used for the multiple
linear regression analysis to provide original variables for depth
derivation. The multivariate slope intercept formula used to
derive depth was Depth=Yint+(Mcoastal)(Xcoastal)+(Mblue)(Xblue)+
(Mgreen)(Xgreen)+(Myellow)(XYellow). The product was derived, from the
original image 13FEB09011102-M2AS-052760757110_04_P003. The MLR
variables for Yint = 16.8896761, Mcoastal = -0.818321229######,
Mblue = -1.061473284, Mgreen = 3.184051914, Myellow = -0.562316809.
This derived bathymetry product (SAR_DBAll_2m) was then integrated
with the multibeam sonar data, with sonar data prioritized
over derived data, to create the final product (SAR_DBMB_10m).
A detailed description of all processing steps and an error analysis
of each derived bathymetry grid used is available upon request.
20140820
Raster
Pixel
697
844
1
Universal Transverse Mercator
55
0.999600
147
0.000000
500000.000000
0
row and column
10
10
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)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
USA
808 725-5360
pibhmc@soest.hawaii.edu
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 Grid
Arc Grid can be opened directly using ArcMap or ArcCatalog.
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/bathymetry/SAR_10m_DBMB.zip
None
20200329
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
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
universal time
None
None
https://www.coris.noaa.gov/metadata/records/html/sarigan_metadata_dbmb_10m.html
7242