Bermuda 1 arc-second Coastal Digital Elevation Model
Thumbnail of DEM
The 1 arc-second Bermuda DEM will be used to support NOAA's tsunami forecast system
and for tsunami inundation modeling. This DEM encompasses the islands of Bermuda and
the adjacent off-shore coastal area.
Cite this dataset when used as a source.
gov.noaa.ngdc.mgg.dem:5010
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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).
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Download Data |
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Distribution Formats |
- netCDF(Version:4 Classic)
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Distributor |
DEM Information NOAA National Centers for Environmental Information dem.info@noaa.gov |
Dataset Point of Contact |
DEM Information NOAA National Centers for Environmental Information dem.info@noaa.gov
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Time Period |
1993-01-01 to 2012-12-31 |
Spatial Reference System |
urn:ogc:def:crs:EPSG::4326urn:ogc:def:crs:EPSG::5715 |
Spatial Bounding Box Coordinates |
West:-65.06
East:-64.51
South:32.17
North:32.55
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Spatial Coverage Map |
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General Documentation |
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Associated Resources |
- Data Stewardship Maturity Report for Bermuda 1 arc-second Coastal Digital Elevation
Model
- Digital Elevation Models of Bermuda: Data Sources, Processing and Analysis
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Publication Dates |
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Edition |
First |
Data Presentation Form |
mapDigital
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Dataset Progress Status |
Complete - production of the data has been completed |
Data Update Frequency |
As needed |
Purpose |
Developed for the Pacific Marine Environmental Laboratory (PMEL), NOAA Center for
Tsunami Research program in support of NOAA's tsunami forecasting and warning 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 Centers for Environmental Information. Not subject to
copyright protection within the United States.
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Originators |
- NOAA National Centers for Environmental Information
- DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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Custodians |
- NOAA National Centers for Environmental Information
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Publishers |
- NOAA National Centers for Environmental Information
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Theme keywords |
Global Change Master Directory (GCMD) Science Keywords
- Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
- Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
- Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
- Earth Science > Land Surface > Topography > Terrain Elevation
- Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief
Maps
- Earth Science > Oceans > Coastal Processes > Coastal Elevation
Uncontrolled
- Coastal Relief
- Gridded elevations
- Integrated bathymetry and topography
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
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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
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Platform keywords |
Global Change Master Directory (GCMD) Platform Keywords
- Models/Analyses > DEM > Digital Elevation Model
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Place keywords |
Global Change Master Directory (GCMD) Location Keywords
- Ocean > Atlantic Ocean > North Atlantic Ocean > Bermuda
- Vertical Location > Land Surface
- Vertical Location > Sea Floor
Uncontrolled
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Project keywords |
Global Change Master Directory (GCMD) Project Keywords
- ICSU-WDS > International Council for Science - World Data System
- NOAA OneStop Project
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Data Resolution keywords |
Global Change Master Directory (GCMD) Horizontal Data Resolution KeywordsGlobal Change Master Directory (GCMD) Vertical Data Resolution Keywords
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Use Constraints |
No constraint information available |
Access Constraints |
- 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.
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Fees |
Fee information not available. |
Lineage information for:dataset
Processor |
- NOAA National Centers for Environmental Information
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Processing Steps |
- 2013-11-01T00:00:00 -All data obtained by NGDC were converted to a common horizontal reference frame (WGS84)
using the Proj4 Cartographic Projections Library. All bathymetry data were converted
to MSL using single values offsets between various tidal datums based on information
obtained from the Government of Bermuda, Ministry of Environment and Planning. The
topographic data were left referenced to Bermuda Ordinance Datum (OD); the offset
between MSL and the OD is approximately 0.9m. It was assumed the magnitude of this
difference was less than the vertical accuracy associated with the data and spatial
resolution of the grids.
- 2013-11-01T00:00:00 -Datasets were visually inspected with ArcGIS, QT Modeler and MB-System for identification
and editing of data anomalies, including but not limited to inconsistencies between
overlapping or adjacent datasets, 'noisy' data, etc.
- 2013-11-01T00:00:00 -All data were converted to ASCII XYZ files. A 1 arc-second bathymetric 'pre-surface'
grid was generated using a tensioned spline algorithm within GMT's 'surface' utility
that interpolated depth values to areas where data were sparse and/or nonexistent.
The bathymetric 'pre-surface' was then imported into ArcGIS and clipped to the coastline
of Bermuda to remove values over land. The clipped 'pre-surface' was then converted
to ASCII XYZ point data.
- 2013-11-01T00:00:00 -The final integrated 1 arc-second topo-bathy DEM was created using GMT's 'blockmedian'
and 'surface' utilities. The topographic spot heights and bathymetric surface points
were used as source datasets in the spline gridding algorithm.
- 2013-11-01T00:00:00 -The DEM was qualitatively evaluated to identify any artifacts that may have been introduced
during the gridding process. If necessary, the data were edited and the gridding routine
was re-run. Once the DEM was deemed suitable, it was compared to nautical charts to
ensure data consistency.
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Source Datasets |
- Data table with established relationships between various vertical datums
- Description of Source: Absolute Differences Between Hydrographic and Topographic Datums
- Time Instant:
2010-05-01T00:00:00
- Sounding depths digitized from various Admiralty Charts of Bermuda
- Description of Source: Source Contribution: Nautical chart derived sounding depths
- Temporal extent used:
1993-01-01 to 1997-12-31
- Bathymetric lidar of Bermuda, South Coast
- Description of Source: Source Contribution: Bathymetric lidar
- Time Instant:
2004-01-01
- Multibeam derived ESRI grids (2m horizontal resolution)
- CSUMB Seafloor Mapping Lab homepage (download)
CSUMB Seafloor Mapping Lab homepage
- Description of Source: Source Contribution: Gridded multibeam bathymetry
- Time Instant:
2009-01-01
- NGDC Multibeam Bathymetry Database
- NGDC Multibeam Bathymetry Database (download)
Multibeam swath sonar survey data
- Description of Source: Source Contribution: Multibeam bathymetry data
- Temporal extent used:
1993-01-01 to 2012-12-31
- Generalized Bathymetric Chart of the Oceans 30 arc-second grid (2008)
- GEBCO organizational website (download)
GEBCO organizational website with links to general information webpages and data access
- Description of Source: Source Contribution: GEBCO08 Global Bathymetric Model
- Time Instant:
2008-01-01
- Topographic spot elevations of Bermuda
- Description of Source: Source Contribution: Topographic surveyed spot elevations
- Time Instant:
2013-01-01
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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.
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Acquisition Information (collection)
Instrument |
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Platform |
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Last Modified: 2022-03-25
For questions about the information on this page, please email:
dem.info@noaa.gov