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)
200305
CRED Gridded Bathymetry of Necker Island (100-021) in the Northwestern Hawaiian Islands
raster digital data
https://www.ncei.noaa.gov/data/oceans/coris/data/NOAA/nmfs/pifsc/cred/griddedbathymetry/BathyAtlasNWHI2003/necker_island/
File 100-021b is a 60-m ASCII grid of depth data collected near Necker Island in the Northwestern Hawaiian Islands as of May 2003. This grid has been produced as part of the "Bathymetric Atlas of the Northwestern Hawaiian Islands -- A Planning Document for Benthic Habitat Mapping -- Draft -- May 2003. Data sources for the downloadable grids include: multibeam bathymetry from Simrad EM1002 and EM120 sonars aboard the R/V Kilo Moana collected in October/November 2003; multibeam bathymetry data from a SeaBeam 210 sonar aboard the R/V Kai'imikai-O-Kanaloa collected in 2000-2002; LIDAR data obtained using the LADS MK II lidar system; and depth data derived from IKONOS satellite imagery. No tidal corrections have been applied to the data. The data source location for each type of data is indicated in the "dot plot" browse objects. Additional single-beam bathymetric data are available in this area and are indicated on the 100-021b Plot C browse object, but these less accurate depths are not included in the downloadable grid. Multibeam data were processed using SABER editing software and MBSystem and multibeam, LIDAR and IKONOS data were integrated using MBSystem, and GMT. Grid spacing is 60-m, horizontal accuracy is 20m (no differential GPS correctors applied), vertical accuracy is depth dependent (~1% of water depth), WGS84 datum. These data are not to be used for navigation.
The data provide baseline information about the location of bathymetric data that are available in the NWHI as of May 2003. The data have been synthesized as a starting point for formulation of a coordinated NOAA plan for future work in the area and as a guideline to data quality and usefulness for a variety of purposes, including coral reef analyses, reserve, sanctuaries and fisheries interests, and charting.
Browse_Graphic_File_Name: https://www.ncei.noaa.gov/data/oceans/coris/data/NOAA/nmfs/pifsc/cred/griddedbathymetry/BathyAtlasNWHI2003/necker_island/100-021c.pdf
Browse_Graphic_File_Description: These files shows all data available (multibeam, LIDAR, IKONOS depths, and single-beam echosounder)
2000
2003
ground condition
As needed
-165.05
-164.108
23.887
23.147
NCEI Geoportal FilterCoRIS_MetadataCRCP ProjectBenthic Habitat Mapping and Characterization - Northwestern and Main Hawaiian Islands1217
CoRIS Discovery Thesaurus
Map Images > Bathymetry
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Base map > Satellite Imagery
None
Bathymetry
Multibeam sonar
IKONOS depth data
LIDAR
echosounding
grid
ISO 19115 Topic Category
elevation
006
None
Necker Island
Northwestern Hawaiian Islands
Pacific Ocean
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Necker Island (23N164W0001)
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Necker Island (23N164W0001)
CoRIS Region
NWHI
None.
These data are NOT TO BE USED FOR NAVIGATION
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
1) Joyce E. Miller, Joint Institute for Marine and Atmospheric Research, University of Hawaii/ Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center 2) Dr. Bruce Appelgate and Paul Johnson, Hawaii Mapping Research Group, University of Hawaii 3) Dr. John R. Smith, Hawaii Undersea Research Laboratory, University of Hawaii. 4) Dr. Richard Stumpf and Kristine Holderied, NOAA National Center for Coastal Ocean Science 5) Dr. Michael Parke, Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center
Not applicable
Unclassified
Not applicable
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800
NOAA, U.S. Dept. of Commerce, National Ocean Service
200303
Atlas of the Shallow-Water Benthic Habitats of the Northwestern Hawaiian Islands
Draft
https://products.coastalscience.noaa.gov/collections/benthic/e98nwhi/default.aspx
Horizontal accuracy is approximately 20 m as data were collected using GPS with no differential corrections. Vertical accuracy of data is data type and depth dependent; no tidal corrections were applied multibeam, IKONOS or single-beam data. Multibeam echosounder data are good to approximately 1 percent of water depth (depth ranges from approximately 10-5000m) ; IKONOS satellite depths are estimated to have a vertical accuracy of plus or minus 15 per cent; LIDAR data are accurate to IHO class 1 standards and are tide corrected.
These data are believed to be logically consisten though no tests were performed
Varies
Variable
20
Multibeam sonar data. No DGPS corrections applied; 20 m accuracy
20
LADS LIDAR data reported to be collected to IHO class I standards
100
NOS Single-beam data collected before GPS available and were shifted horizontally; accuracy 100 m
20
CRED Single-beam data were collected in 2001-2003 using GPS with no differential correctors applied. 20 m.
15
IKONOS data collected from satellite source; 15 m
Variable
1
Accuracy varies with water depth. No tide correctors applied; multibeam data vertical accuracy is approximately 1 percent of water depth.
0.5
NOS Single-beam data depths good to 0.5 m
15
IKONOS estimated accuracy to 15 meters plus or minus 15 percent
1
LADS LIDAR data reported to be collected to IHO class I standards
1
CRED Single-beam sonar data depth accuracy estimate 15 percent of depth
Dr. Bruce Appelgate & Paul Johnson, University of Hawaii
Unknown
Simrad EM 120 multibeam bathymetric data
Digital data
2002
ground condition
Simrad EM 120
Simrad EM 120 (12 kHz) bathymetry and imagery data were collected in depths of approximately 100m and greater.
The EM 120 system was placed in stand-by mode in shallower water due to high noise levels.
Dr. Bruce Appelgate & Paul Johnson, University of Hawaii
Unknown
Simrad EM1002 Bathymetric Data
Digital data
2002
ground condition
Simrad EM1002
Simrad EM 1002 (95 kHz) bathymetry and imagery data were collected in depths of approximately 20-1000m.
The EM 1002 system was placed in stand-by mode in water depths greater than approximately 500 m.
Dr. John R. Smith, University of Hawaii
Unknown
SeaBeam 210 multibeam bathymetric data
Digital data
2000
2002
ground condition
SeaBeam 210
The SeaBeam 210 multibeam sonar system is a hull-mounted, roll and pitch compensated
bathymetric deep seafloor mapping system capable of ensonifying a swath 70-80 percent of
the water depth. These data were used to plan and lay out the KM0206 multibeam surveys.
The SeaBeam bathymetric data, however, are of sufficient quality to provide depth information
that can be used for determination of the 25-, 50, and 100-fm boundaries.
Joyce E. Miller, Joint Institute for Marine and Atmospheric Research
Unknown
Simrad EK50 single-beam echosounder data
Digital data
2001
2002
ground condition
Simrad EK50
The depth information was used to plan and layout the 25-fm survey lines, which facilitated
more efficient surveying. The QTC system is designed for use in bottom classification;
processing and analysis of the QTC information for benthic habitat mapping is on-going.
Dr. Richard Stumpf and Kristine Holderied, NOAA National Ocean Services
Unknown
IKONOS estimated depths
Digital data
Unknown
Unknown
IKONOS
IKONOS estimated depth data are used to map very shallow water, up to 16 meters in depth.
Dr. Michael Parke, NOAA Coral Reef Ecosystem Division/Pacific Island Fisheries Sciences Center
Unknown
NOS Single-beam data
Digital data
Unknown
Unknown
NOS Single-beam
Historical data are used for water depth data in areas not surveyed for this project.
Metadata imported
20031210
Raster
Grid Cell
1345
1586
1
Universal Transverse Mercator
3
0.999600
-177.000000
0.000000
500000.000000
0.000000
Row and Column
60.482560
60.482560
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
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.
JPEG
8.200
https://www.ncei.noaa.gov/data/oceans/coris/data/NOAA/nmfs/pifsc/cred/griddedbathymetry/BathyAtlasNWHI2003/necker_island
None
20200329
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 Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
Local Time
20041007032721
None
20000101
20031231
https://www.coris.noaa.gov/metadata/records/html/cred_bathy_atlas_necker_island_2003.html
713