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 5 m Gridded bathymetry of Brooks Banks, Hawaii, USA (Arc ASCII format)
digital data
http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/northwest-hawaiian-islands/
Gridded bathymetry (5m) of the shelf and slope environments of Brooks Banks,
Hawaii, USA. The ASCII includes multibeam bathymetry from the Simrad EM300,
Simrad EM3002d, and Reson 8101-ER multibeam sonars collected as of December 2006
by the NOAA Coral Reef Ecosystem Division in depths between 20 and 300 meters.
This ASCII was created using data gathered from multibeam soundings for use as a
planning and reference document. 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 NOAA Ship Hi'ialakai, 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.
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 HI0503, HI0612, and AHI0612. These metadata can be accessed at:
http://www.soest.hawaii.edu/pibhmc/cms/cruise-catalog/
20050418
20061030
ground condition
As needed
-167.056304
-166.626562
24.316486
23.914123
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
None
Brooks Banks
Hawaii
Northwestern Hawaiian Islands
United States of America
CoRIS Place Thesaurus
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Brooks Banks (24N166W0002)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Brooks Banks (24N166W0002)
CoRIS Region
NWHI
None
These data are not to be used for navigation purposes.
Please acknowledge NOAA 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/NWHI_images/Brooks_5m_500.jpg
Multibeam Bathymetry
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 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 and area based editing is performed. The edited PFM is then exported
as X,Y,Z points with a defined grid cell size. The resulting X,Y,Z data are then
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. Finally, the netCDF grid is clipped at a depth that minimizes data gaps
for the specified grid cell size and 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.
20061218
Raster
Grid Cell
8801
8623
1
Universal Transverse Mercator
3
0.9996
-165
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 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.
Arc ASCII
Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools.
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/bathymetry/Brooks_5m.asc.zip
None
20190605
20110323
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
20090220083610
None
20050418
20061030
https://www.coris.noaa.gov/metadata/records/html/cred_gridded_bathy_brooks_nwhi_5m_arc_asc.html
2968