Midway Atoll Coastal Digital Elevation Model

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 (WGS 84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters).

Data and Resources

Field Value
accessLevel public
accrualPeriodicity irregular
bureauCode {006:48}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier gov.noaa.ngdc.mgg.dem:642
language {en-US}
modified 2009-06-30
old-spatial {"type": "Polygon", "coordinates": [[[-177.57, 28.09], [-177.16, 28.09], [-177.16, 28.42], [-177.57, 28.42], [-177.57, 28.09]]]}
programCode {006:059}
publisher DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash ab52ead991351c9a4b3683abfd78301048f5532e
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-177.57, 28.09], [-177.16, 28.09], [-177.16, 28.42], [-177.57, 28.42], [-177.57, 28.09]]]}
temporal 1961-01-01T00:00:00/2009-01-01T00:00:00
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • boulder
  • boulder-world-data-center-for-marine-geology-and-geophysics
  • ckan
  • coastal-relief
  • continent-north-america-united-states-of-america-pacific-ocean
  • dem-digital-elevation-model
  • doc-noaa-nesdis-ngdc-national-geophysical-data-center
  • earth-science-land-surface-topography-terrain-elevation
  • earth-science-land-surface-topography-topographical-relief
  • earth-science-oceans-bathymetry-seafloor-topography-bathymetry
  • earth-science-oceans-bathymetry-seafloor-topography-seafloor-topography
  • earth-science-oceans-bathymetry-seafloor-topography-water-depth
  • earth-science-oceans-coastal-processes-coastal-elevation
  • geo
  • geoss
  • gridded-elevations
  • integrated-bathymetry-and-topography
  • midway-atoll
  • national
  • nesdis
  • noaa
  • north-america
  • ocean-pacific-ocean-north-pacific-ocean
  • pacific-ocean
  • u-s-department-of-commerce
  • united-states
  • vertical-location-land-surface
  • vertical-location-sea-floor
  • wdc-mgg
isopen False
license_id notspecified
license_title License not specified
maintainer DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
maintainer_email dem.info@noaa.gov
metadata_created 2025-11-20T17:30:59.120709
metadata_modified 2025-11-20T17:30:59.120713
notes 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 (WGS 84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters).
num_resources 18
num_tags 31
title Midway Atoll Coastal Digital Elevation Model