Sand Point, 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 warning 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-peninsula
keyword: aleutian-islands
keyword: amerigeo
keyword: amerigeoss
keyword: boulder
keyword: boulder-world-data-center-for-marine-geology-and-geophysics
keyword: ckan
keyword: coastal-relief
keyword: continent-north-america-united-states-of-america-alaska
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-90-meters
keyword: integrated-bathymetry-and-topography
keyword: national
keyword: nesdis
keyword: noaa
keyword: north-america
keyword: ocean-pacific-ocean-north-pacific-ocean-gulf-of-alaska
keyword: sand-point
keyword: u-s-department-of-commerce
keyword: unga-island
keyword: united-states
keyword: v-1-meter
keyword: vertical-location-land-surface
keyword: vertical-location-sea-floor
keyword: wdc-mgg
issued: 2025-11-21T05:18:37.340055
modified: 2006-09-29
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

Sand Point, 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/395
issued: 2021-03-11T05:15:58.034416
modified: 2025-11-21T05:18:37.316668

Sand Point, Alaska Coastal Digital Elevation Model Homepage
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/download/395
issued: 2021-03-11T05:15:58.034423
modified: 2025-11-21T05:18:37.317080

DEM text search tool
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/search
issued: 2021-03-11T05:15:58.034426
modified: 2025-11-21T05:18:37.317465

Map Interface
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/map
issued: 2021-03-11T05:15:58.034429
modified: 2025-11-21T05:18:37.317849

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: 2021-03-11T05:15:58.034431
modified: 2025-11-21T05:18:37.318243

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: 2021-03-11T05:15:58.034434
modified: 2025-11-21T05:18:37.318648

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: 2021-03-11T05:15:58.034437
modified: 2025-11-21T05:18:37.319032

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: 2021-03-11T05:15:58.034440
modified: 2025-11-21T05:18:37.319416

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: 2021-03-11T05:15:58.034442
modified: 2025-11-21T05:18:37.319784

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: 2021-03-11T05:15:58.034445
modified: 2025-11-21T05:18:37.320153

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: 2021-03-11T05:15:58.034449
modified: 2025-11-21T05:18:37.320518

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: 2021-03-11T05:15:58.034454
modified: 2025-11-21T05:18:37.320901

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: 2021-03-11T05:15:58.034459
modified: 2025-11-21T05:18:37.321275

Sand Point, AK 3 arc-second Tsunami Inundation DEM
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/download/395
issued: 2021-03-11T05:15:58.034463
modified: 2025-11-21T05:18:37.321638

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: 2021-03-11T05:15:58.034468
modified: 2025-11-21T05:18:37.321999

Digital Elevation Models of Sand Point, Alaska: Procedures, Data Sources and Analysis
type: Distribution
media type: text/html
format: HTML
access URL: http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/395
issued: 2021-03-11T05:15:58.034472
modified: 2025-11-21T05:18:37.322362

GCMD Feedback Form
type: Distribution
media type: text/html
format: HTML
access URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf
issued: 2021-03-11T05:15:58.034476
modified: 2025-11-21T05:18:37.322746

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: 2021-03-11T05:15:58.034481
modified: 2025-11-21T05:18:37.323119