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)
20110301
Gridded bathymetry of Reef Runway, Oahu Hawaii, USA
digital data
http://www.soest.hawaii.edu/pibhmc
http://www.soest.hawaii.edu/pibhmc/pibhmc_mhi_oah_bathy.htm
Gridded bathymetry (1m) of Reef Runway ship grounding site, Oahu,
Hawaii, USA. The data include multibeam bathymetry from the Reson 8101 multibeam sonar collected
in December, 2010 by the NOAA Coral Reef Ecosystem Division in depths between ~ 4 and 23 meters.
These netCDF and ASCII grids were created using data gathered from multibeam soundings to document
the impact of a ship grounding on the benthic habitat, and for use as a planning and reference
document. Further data were collected to fill gaps in the existing bathymetry.
Refer to supplemental information for description of instrument and survey.
Data were collected aboard the R/V AHI (Acoustic Habitat
Investigator), a 8 m (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 which measures bathymetry and
acoustic backscatter imagery, a TSS/Applanix POS/MV Model
320 which measures time, 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 cruise AHI1012.
These metadata can be accessed at:
http://www.soest.hawaii.edu/pibhmc/pibhmc_cruise-catalog.htm
20101213
20101214
ground condition
As needed
-157.93
-157.92
21.30
21.29
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
ISO 19115 Topic Category
elevation
006
CoRIS Discovery Thesaurus
Geographic Information > Bathymetry
None
Bathymetry
Multibeam sonar
None
Hawaiian Islands
Oahu
CoRIS Region
MHI
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)
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
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/MHI_images/Oahu_ReefRunway_1m_445.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 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 (1 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
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: http://www.soest.hawaii.edu/gmt and additional
information about the multibeam data processing is recorded in
the cruise metadata.
20110112
Raster
Grid Cell
674
1487
1
Universal Transverse Mercator
4
.9996
-165
0
500000
0
Row and Column
1
1
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
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 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.
http://www.soest.hawaii.edu/pibhmc/pibhmc_mhi_oah_bathy.htm
None
20121207
20110425
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
20110425072713
None
20101213
20101214
http://www.coris.noaa.gov/metadata/records/html/reefrunway_1m_bathy.html
6255