Albemarle Sound, NC (S010) Bathymetric Digital Elevation Model (30 meter resolution) Derived From Source Hydrographic Survey Soundings Collected by NOAA

Description

Bathymetry for Albemarle Sound was derived from twenty-five surveys containing 187,065 soundings. Two older, less accurate, overlapping surveys were omitted before tinning. The average separation between soundings was 115 meters. There was one survey in the west that dated from 1874. The remaining twenty-four surveys used dated from 1917 to 1942. The total range of sounding data was 0.7 meters to - 14.3 meters at mean low water. A mean high water value of 0.2 meters was assigned to the shoreline. Eight points were found that were not consistent with the surrounding data. These were removed prior to tinning. DEM grid values outside the shoreline (on land) were assigned null values (-32676). Albemarle Sound has forty-nine 7.5 minute DEMs and four one degree DEMs. The 1 degree DEMs were generated from the higher resolution 7.5 minute DEMs which covered the estuary. A Digital Elevation Model (DEM) contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A- record), followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations (typically in units of 1 centimeter) per each profile. The last physical record of the DEM is an accuracy record (C-record). The 7.5-minute DEM (30- by 30-m data spacing) is cast on the Universal Transverse Mercator (UTM) projection. It provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle but the DEM contains over edge data. Coverage is available for many estuaries of the contiguous United States but is not complete.

Resources

Name Format Description Link
0 text search https://www.ngdc.noaa.gov/mgg/bathymetry/estuarine
21 OPeNDAP Dataset Access Form https://www.ngdc.noaa.gov/thredds/dodsC/regional/albemarle_sound_s010_30m.nc.html
50 Web Coverage Service GetCapabilities https://www.ngdc.noaa.gov/thredds/wcs/regional/albemarle_sound_s010_30m.nc?service=WCS&version=1.0.0&request=GetCapabilities
0 map search https://www.ngdc.noaa.gov/mgg/bathymetry/estuarine
52 Web Map Service GetCapabilities https://www.ngdc.noaa.gov/thredds/wms/regional/albemarle_sound_s010_30m.nc?service=WMS&version=1.3.0&request=GetCapabilities
32 NetCDF Markup Language file https://www.ngdc.noaa.gov/thredds/ncml/regional/albemarle_sound_s010_30m.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Falbemarle_sound_s010_30m.nc
32 Download NetCDF File https://www.ngdc.noaa.gov/thredds/fileServer/regional/albemarle_sound_s010_30m.nc
21 Download a subset of the NetCDF https://www.ngdc.noaa.gov/thredds/ncss/regional/albemarle_sound_s010_30m.nc/dataset.html

Tags

  • bathymetry
  • oceans
  • north carolina
  • 1 meter - < 10 meters
  • coastal elevation
  • 1 meter - < 30 meters
  • earth science
  • bathymetry/seafloor topography
  • gridded elevations
  • coastal relief
  • albemarle sound
  • water depth
  • coastal processes
  • seafloor topography

Topics

Categories