Digital Elevation Model of Akutan, Alaska, Integrating Bathymetric and Topographic DatasetsEntry ID: gov.noaa.ngdc.mgg.dem.737
Abstract: ABSTRACT: NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. ... Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 8/15 arc-second (~16 meters) to 8 arc-seconds (~240 meters).
CURRENTNESS REFERENCE: ground condition
SPATIAL DATA ORGANIZATION INFORMATION
Direct Spatial Reference: Raster
Raster Object Type: Grid Cell
Row Count: 541
Column Count: 1216
Vertical Count: 1
SPATIAL REFERENCE INFORMATION - GEODETIC MODEL
Horizontal Datum Name: D_WGS_1984
Ellipsoid Name: WGS_1984
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257224
NATIVE: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 18.104.22.1680
Purpose: PURPOSE: Developed for the University of Alaska at Fairbanks (UAF), Geophysical Institute for tsunami and coastal inundation modeling efforts for the State of Alaska.
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Data Set Citation
Dataset Originator/Creator: DRAPEK, R.NEILSON, R.P.
Dataset Title: MAPSS: MAPPED ATMOSPHERE-PLANT-SOIL SYSTEM MODEL, VERSION 1.0
Dataset Release Date: 2007
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/853Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=853&term2attribut...
Start Date: 1995-01-01Stop Date: 1995-01-01
BIOSPHERE > TERRESTRIAL ECOSYSTEMS > AGRICULTURAL LANDS
BIOSPHERE > VEGETATION > CANOPY CHARACTERISTICS
BIOSPHERE > TERRESTRIAL ECOSYSTEMS > FORESTS
BIOSPHERE > TERRESTRIAL ECOSYSTEMS > GRASSLANDS
LAND SURFACE > SOILS > NITROGEN
LAND SURFACE > SOILS > PHOSPHORUS
BIOSPHERE > TERRESTRIAL ECOSYSTEMS > SAVANNAS
LAND SURFACE > SOILS > SULFUR
Data Set Progress
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-12-31
Last DIF Revision Date: 2012-08-31