NCEI (formerly NGDC)
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Mariana Trench Bathymetric Digital Elevation Model

browse graphicPerspective view of DEM
NOAA's National Geophysical Data Center (NGDC) created a bathymetric digital elevation model (DEM) for the Mariana Trench and adjacent seafloor in the Western Pacific Ocean.
Bathymetric data used in DEM compilation were obtained from various sources, including internation, federal and academic partners. The DEM is referenced to the horizontal datum of
World Geodetic System 1984 (WGS 84) and the vertical datum of sea level. Grid spacings for the Mariana Trench DEM is 6 arc-seconds (~180 meters). Please note that while positive
elevations (elevations greater than 0 meters) are present in the DEM over 'dry' land (i.e. islands such as Guam and the Northern Mariana Islands), they should be ignored as the
focus of DEM development was solely in the bathymetric realm.
Cite this dataset when used as a source.
  • ID not available.
Search Data
  • DEM text search (search)
    Text search for locating completed and planned DEMs.
  • Bathymetric Data Viewer (search)
    The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI).
Distribution Formats
  • ESRI Arc ASCII (Version: 1)
    • File Specification: ASCII text version of ESRI ArcGIS raster format
    • File Compression: WINZIP
Distributor DEM Information
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
dem.info@noaa.gov
Dataset Point of Contact DEM Information
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
dem.info@noaa.gov
Time Period: 1985-01-01 to 2011-12-31
Spatial Reference System: urn:ogc:def:crs:EPSG::4326urn:ogc:def:crs:EPSG::5715
Spatial Bounding Box Coordinates:
N: 22.00
S: 10.00
E: 150.00
W: 139.00
Dataset Information
Associated Resources
  • NOAA Bathymetry and Global Relief
    • Bathymetric Data Viewer (search)
      The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI).
    • DEM text search (search)
      Text search for locating completed and planned DEMs.
  • Bathymetric Digital Elevation Model of the Mariana Trench
Date(s)
  • publication: 2013-02-14
Edition: First
Data Presentation Form: mapDigital
Dataset Progress Status Complete
Data Update Frequency: As needed
Purpose: Developed for the Mississippi State University Geosystems Research Institute and NOAA National Marine Fisheries Service to support scientific visualization efforts.
Use Limitations
  • Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
  • Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
  • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Originator(s)
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Publisher(s)
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science and Services Keywords
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
NASA/GCMD Platform Keywords
  • Models/Analyses > DEM > Digital Elevation Model
NASA/GCMD Data Resolution Keywords
  • 100 meters - < 250 meters
  • 1 meter - < 10 meters
Uncontrolled
  • Bathymetric Digital Elevation Model
  • Gridded elevations
Global Change Master Directory (GCMD) Service Keywords
  • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
  • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
  • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Global Change Master Directory (GCMD) Service Keywords
  • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
  • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
  • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Ocean > Pacific Ocean > Western Pacific Ocean
  • Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Guam
  • Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Northern Mariana Islands
  • Vertical Location > Sea Floor
Uncontrolled
  • Mariana Trench
  • Pacific Ocean
Project keywords Global Change Master Directory (GCMD) Project Keywords
  • ICSU-WDS > International Council for Science - World Data System
Use Constraints No constraint information available
Fees Fee information not available.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Lineage information for: dataset
Processor
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps
  • 2012-12-15T00:00:00 - All datasets obtained by NGDC were converted to a common ASCII XYZ file format. All data obtained were natively referenced to WGS84. No vertical datum transformations were performed, as any vertical datum offsets between datasets are assumed to be less than vertical accuracy associated with 6 arc-second grid, and are thus effectively equivalent.
  • 2012-12-15T00:00:00 - The data were visually inspected with Fledermaus and ArcGIS for identification and editing of data anomalies. Datasets were compared with overlapping datasets to ensure data consistency. In some cases, overlapping data were edited to ensure a smooth transition between adjacent datasets.
  • 2012-12-15T00:00:00 - ASCII XYZ files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to more recent, higher-accuracy datasets.
  • 2012-12-15T00:00:00 - The DEM was reviewed qualitatively for any noticeable artifacts introduced during the gridding process using imagery and other ancillary data. If necessary, problematic source data were edited and the an updated grid was created.
Source Datasets
  • NGDC Multibeam Bathymetry Database
    • NGDC Multibeam Bathymetry Database (download)
      Digital database of NGDC multibeam surveys.
    • Description of Source: Source Contribution: downloaded from web site. ; Source Type: online
    • Temporal extent used: 1985-01-01 to 2011-12-31
  • NAVOCEANO Multibeam Bathymetry
    • NGDC Multibeam Bathymetry Database (download)
      Digital data obtained via database of NGDC multibeam surveys.
    • Description of Source: Source Contribution: downloaded from web site. ; Source Type: online
    • Temporal extent used: 2010-01-01 to 2011-12-31
  • Japanese Agency for Marine-Earth Science and Technology Multibeam Bathymetry
    • Description of Source: Source Contribution: obtained via data request ; Source Type: DVD
    • Temporal extent used: 2002-01-01 to 2011-12-31
  • Japanese Coast Guard Hydrographic and Oceanographic Department Multibeam Bathymetry
    • Description of Source: Source Contribution: obtained via data request; Source Type: DVD
    • Temporal extent used: 1993-01-01 to 2005-12-31
  • NOAA NGDC ETOPO1 Global Relief Model
    • ETOPO1 Global Relief Model (download)
      Global relief model integrating bathymetry and topography, in raster form (DEM)
    • Description of Source: Source Contribution: downloaded from web site. ; Source Type: online
    • Temporal extent used: Unknown to
Acquisition Information (collection)
Instrument
    Platform
    • Digital Elevation Model
    Last Modified: 2017-07-03
    For questions about the information on this page, please email: dem.info@noaa.gov