NCCOS Mapping: Satellite derived bathymetry and benthic habitat mapping to support sea level rise models for the area surrounding Roi-Namur Island, Kwajalein Atoll, Republic of the Marshall Islands (NCEI Accession 0259452)
Satellite Derived Bathymetry (SDB), benthic habitat, and hydrodynamic friction maps were generated for a study area surrounding Roi-Namur Island, part of the Kwajalein Atoll of the Republic of the Marshall Islands. The SDB and habitat maps were generated from WorldView-2 and -3 satellite imagery. These layers were needed as part of a larger effort to model the impacts of sea-level rise and inundation on Department of Defense installations on atolls in the Pacific Ocean. Tide corrected depth data to parameterize the SDB models and underwater video to aid in classification of the benthic habitat map were collected in the field during an April 2014 mission to Kwajalein Atoll. No video data were submitted in this dataset. For a complete description technique and results see Field et al. 2022.
Dataset Citation
- Cite as: Field, Don; Malhotra, Amit; Piniak, Greg (2022). NCCOS Mapping: Satellite derived bathymetry and benthic habitat mapping to support sea level rise models for the area surrounding Roi-Namur Island, Kwajalein Atoll, Republic of the Marshall Islands (NCEI Accession 0259452). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/89ns-h092. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:0259452
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
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NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
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NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 2009-12-09 to 2015-01-23 |
Spatial Bounding Box Coordinates |
West: 167.4436
East: 167.5021
South: 9.36092
North: 9.40841
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Dataset Progress Status | Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information | Submission Package ID: 83U2H4 Methods: The satellite imagery that was the basis of this effort was from the WorldView-2 and -3 commercial satellites (2m pixel size, 8 spectral bands). Due to issues with tides and cloud cover, 4 satellite images were needed for complete coverage of the study area (12/09/2009, 09/24/2014, 12/29/2014 and 1/23/2015). Non-linear band ratio models were utilized with depth data collected in the field during an April 2014 mission to Kwajalein Atoll to create the SDB. Random points, not used in the SDB models, were selected from the field depth data to provide an estimate of the accuracy of the final product. The benthic habitat maps were generated with the same satellite imagery using a combination of automated image processing techniques and on-screen, heads up digitizing. Underwater video collected during the April 2014 field mission was used as training data for creating the maps, but is not included in this dataset. The resulting benthic habitat map was converted to a spatially varying friction coefficient map, using friction values for coral reef habitats from the literature. File Information: Total File Size: 128 MB total, 17 files in 1 folder (unzipped), 5.13 MB (zipped) Data File Format(s): GeoTiff .TIF (and ancillary files .TFW, .AUX, .OVR, .XML) Data File Resolution: 2m X 2m resolution; 3193 cols X 2605 rows GIS Projection: Projected Coordinate System: UTM Zone 58N (WKID 32658), Geographic Coordinate System: WGS 84 (WKID 4326) Data Files: •Satellite_Derived_Bathymetry_Roi-Namur.tif •Benthic_habitats_Roi-Namur.tif •Hydrodynamic_Friction_Roi-Namur.tif Documentation Files: •BrowseGraphic.JPG •DataDocumentation.PDF |
Purpose | The SDB, benthic habitat and hydrodynamic friction maps developed through this effort were a necessary component of a larger research project led by the USGS Pacific Coastal and Marine Science Center. That project is examining the impacts of sea-level rise and climate change on Department of Defense installations on atolls in the Pacific Ocean. The products described here were a necessary and crucial component of the project models that assessed the impact of seal-level rise and storm-wave inundation on atoll infrastructure and freshwater availability. This was a cooperative effort between the USGS Pacific Coastal and Marine Science Center, the University of Hawaii and NCCOS. |
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Last Modified: 2024-03-20T16:42:07Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov