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)
20071130
CRED 10m Gridded multibeam bathymetry of Supply Reef, Commonwealth
of the Northern Mariana Islands (CNMI).
digital data
http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi.htm
Gridded bathymetry shelf, bank and slope environments of
Supply Reef, CNMI. Bottom coverage was achieved in depths between
4 and 3275 meters.This 10 m grid contains data only to 800 m. The
netCDF and Arc ASCII grids include multibeam bathymetry from the
Simrad EM300 and Reson 8101 multibeam sonars collected as of
June 2007 by the NOAA Coral Reef Ecosystem Division. The sonar
frequencies are 30 and 240 kHz respectively.
These netCDF and ASCII grids were created using data gathered
from multibeam soundings for use as a planning and reference
document. The data are also being used for benthic habitat
geologic features of the area. Refer to supplemental information
for description of instrument and survey.
Multibeam data were collected aboard the NOAA Ship Hi'ialakai, a
218' United States National Oceanographic and Atmospheric
Administration research ship. The NOAA Ship Hi'ialakai'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.
Multibeam 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.
Specific equipment configurations are documented in metadata from
cruises AHI0703 and HI0703. These metadata can be accessed at:
http://www.soest.hawaii.edu/pibhmc/pibhmc_cruise-catalog.htm
20070525
20070608
ground condition
As needed
145.073
145.129
20.175
20.117
CoRIS Discovery Thesaurus
Geographic Information > Bathymetry
ISO 19115 Topic Category
elevation
006
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
None
Bathymetry
Multibeam sonar
None
Supply Reef
Commonwealth of the Northern Mariana Islands
United States of America
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Supply Reef (16N145E0004)
COUNTRY/TERRITORY > Northern Mariana Islands > Supply Reef (16N145E0004)
CoRIS Region
CNMI
None
These data are not to be used for navigation purposes. Please acknowledge NOAA Pacific Islands Fisheries
Science Center, and the Joint Institute for Marine and
Atmospheric Research (JIMAR) 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
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
http://www.soest.hawaii.edu/pibhmc/CNMI_images/supply_10m_500.jpg
Multibeam Bathymetry
JPEG
PIBHMC, CRED, PIFSC, NOAA and JIMAR
Not applicable
Unclassified
Not applicable
netCDF file created using the Generic
Mapping Tools (GMT) and ArcGIS ASCII file, both created in a
LINUX environment
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 (SPS)
Horizontal position accuracy: 25 m
1 m
Raw sounding resolution: Variable
Multibeam swath files are acquired on and around each island and
bank in the Generic Sensor Format (GSF) and are edited on a swath
by swath basis using SAIC's SABER editing software. The edited
swath files are then combined into a Pure File Magic (PFM) format
with a defined grid cell size (10 m) in SABER and area based
editing is performed. The edited PFM is then exported as X,Y,Z
data with a value at each grid node. The X,Y,Z data are then and
gridded using nearneighbor, a Generic Mapping Tools (GMT)
algorithm that converts an ASCII or binary table to a netCDF grid
file format. NetCDF grids are then converted to an ArcGIS ASCII
file format using LINUX/UNIX commands in combination with GMT.
GMT is an open source collection of tools for manipulating
geographic data sets. Additional information about GMT can be
found at: www.soest.hawaii.edu/gmt and additional information
about the multibeam data processing is recorded in the cruise
metadata.
20070926
Raster
Grid Cell
602
565
1
Universal Transverse Mercator
55
0.9996
147
0
500000
0
Row and Column
10
10
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 these data have not been developed. Therefore, the
accuracy of depth measurements should be considered to be within
1 meter.
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
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.
netCDF and Arc ASCII
These data can be downloaded as either a 2-D binary netCDF raster
grid or an ArcGIS ASCII text file. The netCDF grid
is the default grid file format used by GMT (Generic Mapping
Tools), which created this file. More information can be located
at http://www.soest.hawaii.edu/gmt/and
http://www.unidata.ucar.edu/software/netcdf/. The Arc ASCII file,
for use in ESRI's (http://www.esri.com) GIS software, can be
converted to an Arc Raster Grid using ArcToolbox ASCII to Raster
conversion tool.
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/bathymetry/supply_10m.grd.zip
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/bathymetry/supply_10m.asc.zip
None
20151017
20090217
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
20090217085453
None
20070525
20070608
http://www.coris.noaa.gov/metadata/records/html/cred_gridded_bathy_supply_cnmi_10m.html
2635