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Dataset Overview | National Centers for Environmental Information (NCEI)

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)

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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.
  • 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].
gov.noaa.nodc:0259452
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  • GeoTIFF
  • Shapefile
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact 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
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2022-09-14
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
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.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Related Funding Agency: US DOC; NOAA; NOS; National Centers for Coastal Ocean Science (NCCOS)
  • Related Funding Agency: US DOD; Strategic Environmental Research and Development Program (SERDP)
  • Partner: U.S. Geological Survey
  • Partner: USGS Pacific Coastal and Marine Science Center
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords NCCOS Research Keywords
  • NCCOS Research Data Type > Derived Data Product
  • NCCOS Research Data Type > Geospatial
  • NCCOS Research Data Type > Model
  • NCCOS Research Priority > Marine Spatial Ecology (MSE)
  • NCCOS Research Topic > Climate Impacts
  • NCCOS Research Topic > Coral Reefs
  • NCCOS Research Topic > Habitat Mapping
  • NCCOS Research Topic > Remote Sensing
Provider Keywords
  • Hydrodynamic Friction
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords Provider Instruments
  • Fathometer
  • Models/Analyses > Data Analysis > Environmental Modeling
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords NCCOS Location Keyword
  • NCCOS Research Location > Region > International
Provider Place Names
  • Kwajalein Atoll
  • Republic of the Marshall Islands
  • Roi-Namur Island
Project keywords NODC PROJECT NAMES THESAURUS Provider Project Names
  • Coral Reef Project: Kwajalein Island
  • Development of Satellite-derived Bathymetry and Benthic Habitat Maps to Support Sea Level Rise Studies in the South Pacific
  • Impacts of Changing Climate on Pacific Island-Based Defense Installations - RC-2336
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • 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].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2022-09-14T20:09:32Z - NCEI Accession 0259452 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Depth (calculated); Units: meters; Observation Category: model output; Sampling Instrument: Fathometer; Sampling and Analyzing Method: Depth measured from Ellipsoid WGS 84 Datum by fathometer in the field for calibrating the depth model and assessing accuracy. The dataset is an estimate of bathymetry from commercial satellite imagery. The bathymetry model is based on satellite band ratios scaled to depth using actual depth data collected in the field during an April 2014 field mission to the study site. WorldView-2 and WorldView-3 satellite imagery (2m spatial resolution, 8 spectral bands) purchased from DigitalGlobe (https://www.digitalglobe.com/); Data Quality Method: The accuracy of the final bathymetry layer was estimated via a random sample of field points collected during the April 2014 field mission that were not used in the bathymetry model; fathometer was used to measure depths in the field for calibrating the depth model and assessing accuracy..
  • Parameter or Variable: Benthic Habitat Type (calculated); Units: square meters; Observation Category: model output; Sampling Instrument: Models/Analyses > Data Analysis > Environmental Modeling; Sampling and Analyzing Method: This data set is a thematic map, a benthic habitat classification of 18 benthic habitat classes. WorldView satellite imagery was classified into 18 different benthic habitat types. WorldView-2 and WorldView-3 satellite imagery (2m spatial resolution, 8 spectral bands) purchased from DigitalGlobe (https://www.digitalglobe.com/); Data Quality Method: The benthic habitat maps were generated 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..
  • Parameter or Variable: Hydrodynamic Friction (calculated); Units: N/A; Observation Category: other; Sampling Instrument: Models/Analyses > Data Analysis > Environmental Modeling; Sampling and Analyzing Method: Assigned Hydrodynamic Friction values from the literature to the classes in the Benthic Habitat Classification. A measure of the relative ability of a habitat to reduce wave energy. It can be measured in the field or in a lab setting. No measurements were made for this study – all values were derived from the literature. Complete list of the reported parameter, value, and citation in Field et al. (2022).; Data Quality Method: No data were processed or analyzed for this study. Values were derived from the literature and applied to the habitats in the benthic habitat map..
Acquisition Information (collection)
Instrument
  • echo sounder
Last Modified: 2024-03-20T16:42:07Z
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