Sitka, Alaska Coastal Digital Elevation Model
type: Dataset
description: NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and modeling efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. 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 the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters).
keyword: alaska
keyword: amerigeo
keyword: amerigeoss
keyword: baranof-island
keyword: boulder
keyword: boulder-world-data-center-for-marine-geology-and-geophysics
keyword: ckan
keyword: coastal-relief
keyword: dem-digital-elevation-model
keyword: doc-noaa-nesdis-ngdc-national-geophysical-data-center
keyword: earth-science-land-surface-topography-terrain-elevation
keyword: earth-science-land-surface-topography-topographical-relief
keyword: earth-science-oceans-bathymetry-seafloor-topography-bathymetry
keyword: earth-science-oceans-bathymetry-seafloor-topography-seafloor-topography
keyword: earth-science-oceans-bathymetry-seafloor-topography-water-depth
keyword: earth-science-oceans-coastal-processes-coastal-elevation
keyword: geo
keyword: geoss
keyword: gridded-elevations
keyword: h-1-meter-30-meters
keyword: integrated-bathymetry-and-topography
keyword: japonski-island
keyword: national
keyword: nesdis
keyword: noaa
keyword: north-america
keyword: ocean-pacific-ocean-gulf-of-alaska-southeast-alaskan-islands
keyword: sitka
keyword: sitka-harbor
keyword: u-s-department-of-commerce
keyword: united-states
keyword: v-1-meter
keyword: vertical-location-land-surface
keyword: vertical-location-sea-floor
keyword: wdc-mgg
issued: 2025-11-20T11:58:14.692221
modified: 2011-07-26
language: {en-US}
contact point: Organization
  fn: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
spatial: Location

US Migrating
type: Agent

Sitka, Alaska Coastal Digital Elevation Model ASCII DEM
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/1981
issued: 2021-03-11T05:13:49.047316
modified: 2025-11-20T11:58:14.667006

Sitka, Alaska Coastal Digital Elevation Model Homepage
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/download/1981
issued: 2021-03-11T05:13:49.047323
modified: 2025-11-20T11:58:14.667455

DEM text search tool
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/search
issued: 2021-03-11T05:13:49.047326
modified: 2025-11-20T11:58:14.667878

Map Interface
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/map
issued: 2021-03-11T05:13:49.047329
modified: 2025-11-20T11:58:14.668277

Integrated Models of Coastal Relief at NGDC
type: Distribution
description: coastal.html
media type: text/html
format: HTML
access URL: http://ngdc.noaa.gov/mgg/coastal/coastal.html
issued: 2021-03-11T05:13:49.047332
modified: 2025-11-20T11:58:14.668678

NOAA GeoPlatform Entry for Digital Elevation Models: Color Shaded Relief
type: Distribution
media type: text/html
format: HTML
access URL: http://noaa.maps.arcgis.com/home/item.html
issued: 2021-03-11T05:13:49.047335
modified: 2025-11-20T11:58:14.669062

DEM Footprints ArcGIS Map Service
type: Distribution
media type: text/html
format: HTML
access URL: http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer
issued: 2021-03-11T05:13:49.047337
modified: 2025-11-20T11:58:14.669445

NOAA GeoPlatform Entry for Digital Elevation Model Footprints
type: Distribution
media type: text/html
format: HTML
access URL: http://noaa.maps.arcgis.com/home/item.html
issued: 2021-03-11T05:13:49.047340
modified: 2025-11-20T11:58:14.669821

DEM Color Shaded Relief Image Service
type: Distribution
media type: text/html
format: HTML
access URL: http://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/ImageServer
issued: 2021-03-11T05:13:49.047342
modified: 2025-11-20T11:58:14.670195

Digital Elevation Models: Color Shaded Relief ArcGIS Image Service
type: Distribution
media type: text/html
format: HTML
access URL: http://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/ImageServer
issued: 2021-03-11T05:13:49.047345
modified: 2025-11-20T11:58:14.670640

Digital Elevation Models: Color Shaded Relief Web Map Service (WMS)
type: Distribution
media type: text/html
format: HTML
access URL: http://gis.ngdc.noaa.gov/arcgis/services/dem_hillshades/ImageServer/WMSServer
issued: 2021-03-11T05:13:49.047347
modified: 2025-11-20T11:58:14.671041

Digital Elevation Model Footprints ArcGIS Dynamic Map Service
type: Distribution
media type: text/html
format: HTML
access URL: http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer
issued: 2021-03-11T05:13:49.047350
modified: 2025-11-20T11:58:14.671428

Digital Elevation Model Footprints Web Map Service (WMS)
type: Distribution
media type: text/html
format: HTML
access URL: http://maps.ngdc.noaa.gov/arcgis/services/web_mercator/dem_extents/MapServer/WMSServer
issued: 2021-03-11T05:13:49.047352
modified: 2025-11-20T11:58:14.671877

Sitka, AK 3 arc-second Tsunami Inundation DEM
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/1981
issued: 2021-03-11T05:13:49.047355
modified: 2025-11-20T11:58:14.672364

NOAA Tsunami Inundation Gridding Project
type: Distribution
description: inundation.html
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html
issued: 2021-03-11T05:13:49.047357
modified: 2025-11-20T11:58:14.672783

DEM text search tool
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/searchForm
issued: 2021-03-11T05:13:49.047360
modified: 2025-11-20T11:58:14.673171

Digital Elevation Models of Sitka, Alaska: Procedures, Data Sources and Analysis
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/1981
issued: 2021-03-11T05:13:49.047363
modified: 2025-11-20T11:58:14.673560

GCMD Feedback Form
type: Distribution
media type: text/html
format: HTML
access URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf
issued: 2021-03-11T05:13:49.047365
modified: 2025-11-20T11:58:14.673944

GCMD Keywords Page
type: Distribution
description: keyword_list.html
media type: text/html
format: HTML
access URL: http://gcmd.nasa.gov/learn/keyword_list.html
issued: 2021-03-11T05:13:49.047368
modified: 2025-11-20T11:58:14.674320