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)
20060930
Gridded bathymetry of Tutuila Island, American Samoa, South Pacific
raster digital data
http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_bathy.htm
Gridded (5 m cell size) bathymetry of the shelf and slope environments
of Tutuila Island, American Samoa, South Pacific.
Almost complete bottom coverage was achieved in depths between
2 and 3409 meters (5 m grid includes data to 250 m). The bathymetry dataset
includes Simrad EM300, EM3002D, and Reson 8101ER multibeam data collected
during Jan. to March of 2004 and during Feb. to March of 2006.
The data were collected in support of Coral Reef Conservation Program goals
to map all shallow (0-30 m) coral reefs in US Pacific waters and priority
moderate (> 30 m) depth areas by 2009. The data are being used to provide
bathymetric and backscatter data for previously unmapped areas; in support
of ecosystem management requirements for benthic habitat mapping and
location of Essential Fish Habitat; and to study the geologic features of
the area.
Data were collected aboard the NOAA Ship Hiialakai, a 218' United States
National Oceanographic and Atmospheric Administration research ship. The NOAA
Ship Hiialakai's survey sensors include a 30 kHz Simrad EM300 sonar
and a 300 kHz Simrad EM3002D sonar, which provide bathymetry and
imagery data, a TSS/Applanix POS/MV Model 320, which measures position,
velocity, attitude and heading, and a Seabird SBE 9/11 plus CTD used to
measure sound velocity profiles. Sensor configuration for the Hi'ialakai for
cruise HI-06-02 is documented in the cruise/multibeam metadata file
HI0602_MB_Metadata.txt.
Data were also collected 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 R/V AHI's survey sensors
include a 240 kHz RESON 8101-ER sonar providing bathymetry and imagery
data, a TSS/Applanix POS/MV Model 320 which measures position, velocity,
attitude and heading, and a Seabird SBE 19 CTD used to measure sound
velocity profiles. Sensor configuration for the AHI for cruise
AHI-06-02 is documented in the cruise/multibeam metadata file
AHI0602_MB_Metadata.txt. Sensor configuration for the AHI for
cruise AHI-04-02 is documented in the cruise/multibeam metadata
file AHI0402_MB_Metadata.txt.
Additional data for the Faga'itua bay area were gathered by the Kongsberg Simrad EM-3000 system,
contracted from the Center for Coastal Ocean Mapping of the University of South Florida (USF),
and operated from a boat owned by the Department of Marine & Wildlife Resources (DMWR)
of the America Samoa Government. For more information please contact: Dawn Wright email:dawn@dusk.geo.orst.edu
20040130
20060313
ground condition
As needed
-170.928197
-170.484814
-14.195351
-14.384053
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
CoRIS Discovery Thesaurus
Geographic Information > Bathymetry
ISO 19115 Topic Category
elevation
006
None
Bathymetry
Multibeam sonar
None
Tutuila Island
American Samoa
South Pacific
Pacific Ocean
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016)
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016)
CoRIS Region
AmSam
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
1125B Ala Moana Blvd.
Honolulu
HI
96814
(808) 983-3776
(808) 983-2902
pibhmc@soest.hawaii.edu
e-mail preferred
http://www.soest.hawaii.edu/pibhmc/amsamoa_images/Tutuila_5m_445px.jpg
Gridded Bathymetry
JPG
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA and Pacific Islands Benthic Habitat Mapping Center, School of Ocean and Earth Science and Technology, University of Hawaii
Not applicable
Unclassified
Not applicable
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
Specifics of data processing are recorded in cruise metadata
reports HI0602_MB_Metadata.txt, AHI0602_MB_Metadata.txt,
AHI0402_MB_Metadata.txt
20060313
Raster
Grid Cell
4162
9559
1
Universal Transverse Mercator
-2
0.9996
-171
0
500000
0
Row and Column
5
5
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
mean lower low water
0.01
meters
Attribute Values
Depth values are real values based on the average of the
soundings that fell within the extracted grid cells. The number of
soundings per grid cell range from >1000 soundings in shallow depths
to as few as 20 soundings in deeper areas. A total error budget for
this survey has not been developed. Therefore, the accuracy of depth
measurements should be considered to be within 1 per cent of water depth.
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)
mailing and physical address
1125B Ala Moana Blvd.
Honolulu
HI
96814
(808) 983-3776
(808) 983-2902
pibhmc@soest.hawaii.edu
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.
netCDF
Binary netCDF Grid:
This file is formatted as a 2-D binary netCDF grid file. This is the
default grid file format used by GMT (Generic Mapping Tools), which created
this file.
More information can be located at http://gmt.soest.hawaii.edu and
http://unidata.ucar.edu/packages/netcdf/index.html and in
http://www.ldeo.columbia.edu/res/pi/MB-System/formatdoc/gsf_spec.pdf
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/bathymetry/Tutuila_5m.grd.zip
Arc ASCII
Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools.
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/bathymetry/Tutuila_5m.asc.zip
None
20121214
20110319
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
1125B Ala Moana Blvd.
Honolulu
HI
96814
(808) 983-3776
(808) 983-2902
pibhmc@soest.hawaii.edu
e-mail preferred
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
Universal Time
None
None
20091218081123
None
20040130
20060313
http://www.coris.noaa.gov/metadata/records/html/tutuila_5m.html
4373