1950 - 2023 NOAA Seamless Topobathy DEM (Compiled 2023): Kachemak, Point Hope, Teller, AK
NOAA Seamless Topobathy Digital Elevation Model Pilot Incorporating Satellite-Derived Bathymetry - Kachemak, Teller, Point Hope, Alaska, project number 1305M223FNCNP0283DPR. Seamless topographic-bathymetry models were produced for three AOIs along the Alaskan coast, integrating multiple source datasets including bathymetric lidar, topographic lidar, multibeam and singlebeam echosounder, IFSAR, and satellite-derived bathymetry (SDB). Satellite-derived bathymetry was produced using empirical and physics-based radiative transfer models, derived from Maxar and Planet Labs mutlispectral imagery. All data sources were adjusted from MLLW to NAVD88 before integrating to a weighted grid, with weights assigned based on quality and data currency. The weighted grid was then interpolated utilizing Generic Mapping Tools (GMT) surface module, leveraging a spline-in-tension interpolation. DEMs were delivered at 2m resolution. Each DEM delivery includes ancillary files including an in situ source map raster, a known issue polygon feature class, source imagery utilized for SDB production, the individual SDB rasters integrated with the topographic-bathymetry model.
Kachemak AOI covers approximately 1012 km2
Point Hope AOI covers approximately 2329 km2
Teller AOI covers approximately 1160 km2
Complete Metadata
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|---|---|
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| description | NOAA Seamless Topobathy Digital Elevation Model Pilot Incorporating Satellite-Derived Bathymetry - Kachemak, Teller, Point Hope, Alaska, project number 1305M223FNCNP0283DPR. Seamless topographic-bathymetry models were produced for three AOIs along the Alaskan coast, integrating multiple source datasets including bathymetric lidar, topographic lidar, multibeam and singlebeam echosounder, IFSAR, and satellite-derived bathymetry (SDB). Satellite-derived bathymetry was produced using empirical and physics-based radiative transfer models, derived from Maxar and Planet Labs mutlispectral imagery. All data sources were adjusted from MLLW to NAVD88 before integrating to a weighted grid, with weights assigned based on quality and data currency. The weighted grid was then interpolated utilizing Generic Mapping Tools (GMT) surface module, leveraging a spline-in-tension interpolation. DEMs were delivered at 2m resolution. Each DEM delivery includes ancillary files including an in situ source map raster, a known issue polygon feature class, source imagery utilized for SDB production, the individual SDB rasters integrated with the topographic-bathymetry model. Kachemak AOI covers approximately 1012 km2 Point Hope AOI covers approximately 2329 km2 Teller AOI covers approximately 1160 km2 |
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|
| identifier | gov.noaa.nmfs.inport:71901 |
| issued | 2023-01-01T00:00:00.000+00:00 |
| keyword |
[
"EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION",
"EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM)",
"EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY > COASTAL BATHYMETRY",
"EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION",
"CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA",
"CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA",
"VERTICAL LOCATION > LAND SURFACE",
"LIDAR > Light Detection and Ranging",
"Airplane > Airplane",
"DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce",
"DEMs"
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|
| landingPage | https://www.fisheries.noaa.gov/inport/item/71901 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2023-12-20T00:00:00.000+00:00 |
| publisher |
{
"name": "Office for Coastal Management",
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|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/71901.pdf"
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|
| rights | otherRestrictions, unclassified |
| spatial | -165.94523956925,68.02897429398,-167.39811989563,68.51960420703 |
| temporal | 1961-07-22T00:00:00+00:00/2023-09-23T00:00:00+00:00 |
| title | 1950 - 2023 NOAA Seamless Topobathy DEM (Compiled 2023): Kachemak, Point Hope, Teller, AK |
