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)
20070301
CRED 60 m Gridded bathymetry and IKONOS estimated depths of UTM Zone 2,
Northwestern Hawaiian Islands, USA (Arc ASCII format)
digital data
http://www.soest.hawaii.edu/pibhmc
Gridded bathymetry and IKONOS estimated depths of the shelf and slope
environments of the Northwestern Hawaiian Islands, USA within UTM Zone 2. Bottom
coverage was achieved in depths between 0 and 5000 meters. The ASCII includes
multibeam bathymetry from the Simrad EM1002, EM120, EM300, and EM3002d, and Reson 8101
multibeam sonars collected as of October 2006 by the NOAA Coral Reef Ecosystem Division
in depths between 20 and 5000 meters. The ASCII grid also includes estimated depths
derived from high resolution IKONOS satellite imagery by the NOAA/NOS/NCCOS/CCMA
Remote Sensing Team in shallow water between 0 and 16 meters.
This ASCII was created using data gathered from multibeam soundings and IKONOS
estimated depths for use as a planning and reference document. The data were collected
to provide information on the 25, 50, and 100 fm contours in the NWHI, which are important
for establishing management boundaries for the NWHI Coral Reef Ecosystem Reserve. The data
are also being used for benthic habitat mapping, for locating Essential Fish Habitat,
and for studying geologic features of the area. Refer to supplemental information for description of instrument and survey.
Multibeam data were collected aboard the R/V Kilo Moana, a 186' United States Navy owned
research vessel. The R/V Kilo Moana's survey sensors include a 12 kHz Simrad EM120
sonar and a 95 kHz Simrad EM1002 sonar, which provide bathymetry and imagery data,
a TSS/Applanix POS/MV Model 320, which measures position, velocity, attitude and
heading, and a Sippican MK-21/PC based XBT system plus a Seabird SBE 9/11 CTD both
of which measured sound velocity profiles. The EM1002 sonar was placed in stand-by
mode in water depths greater than 500 m. EM1002 data have ~0.6 m heave artifacts
on shallow bank-tops.
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.
IKONOS estimated depths were produced using rule-based, semi-automated image analysis
of high-resolution satellite imagery for nine locations in the Northwestern Hawaiian
Islands. For more information about the estimated depth data see the following
online link: http://mercury.ornl.gov/metadata/nbii/html/nos/est%5Fdepth%5Fnwhi.html
Specific equipment configurations are documented in metadata from IKONOS Estimated
Depths and cruises KMO206, HI0503, HI0507, HI0508, and AHI0508. These metadata can be accessed at:
http://www.soest.hawaii.edu/pibhmc/cms/cruise-catalog/
20021001
20051029
ground condition
As needed
-174.169
-168.208
26.3644
24.3749
NCEI Geoportal FilterCoRIS_Metadata
CRCP Project
Benthic Habitat Mapping and Characterization - Northwestern and Main Hawaiian Islands
1217
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
satellite imagery
estimated depth
None
UTM Zone 2
Northwestern Hawaiian Islands
Hawaii
United States of America
Lisianski Island
Pioneer Bank
Northampton Seamounts
Laysan Island
Maro Reef
Raita Bank
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands (28N178W0000)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Northwestern Hawaiian Islands (28N178W0000)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Lisianski Island (25N173W0001)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Pioneer Bank (25N173W0003)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Laysan Island (25N171W0001)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Maro Reef (25N170W0001)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Raita Bank (25N168W0002)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Lisianski Island (25N173W0001)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Pioneer Bank (25N173W0003)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Laysan Island (25N171W0001)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Maro Reef (25N170W0001)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Raita Bank (25N168W0002)
CoRIS Region
NWHI
None
These data are not to be used for navigation purposes.
Please acknowledge NOAA (Office of Ocean Exploration and the Pacific
Islands Fisheries Science Center), the Joint Institute for Marine and
Atmospheric Research University of Hawaii, and Hawaii Mapping
Research Group (HMRG) 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/NWHI_images/NWHI_Zone2_60m_labels_600.jpg
Multibeam Bathymetry and IKONOS Estimated Depths
JPEG
PIBHMC, CRED, PIFSC, NOAA and JIMAR
Not applicable
Unclassified
Not applicable
ArcGIS ASCII file 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 bank and atoll in
UTM Zone 2 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 in SABER for each bank and
atoll and area based editing is performed. The edited PFM is then exported
as X,Y,Z points with a defined grid cell size and the points are combined
with X,Y,Z IKONOS estimated depth points. The resulting X,Y,Z data for each
bank, atoll, and intervening seafloor are then combined using LINUX commands
and gridded using xyz2grd, a Generic Mapping Tools (GMT) algorithm that converts
an ASCII or binary table to a netCDF grid file format. GMT is an open source
collection of tools for manipulating geographic data sets. Grid nodes with more
than one value are set to the average value and unconstrained nodes are set to
NaN. The netCDF grid file is then converted to an ArcGIS ASCII file format using
LINUX/UNIX commands in combination with GMT. 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.
20061213
Raster
Grid Cell
3661
10001
1
Universal Transverse Mercator
2
0.9996
-171
0
500000
0
Row and Column
60
60
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.
ArcGIS ASCII
Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools.
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/bathymetry/NWHI_Zone2_60m.asc.zip
None
20190605
20090401
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
20090401072443
None
20021001
20051029
https://www.coris.noaa.gov/metadata/records/html/cred_nwhi_zone2_60m_asc.html
2671