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1-km bed topography digital elevation model (DEM) of the Weddell Sea sector, West Antarctica

Jeofry, Hafeez; Ross, Neil; Corr, Hugh F.J.; Li, Jilu; Gogineni, Prasad; Siegert, Martin J.


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{
  "description": "<p>We present a new bed elevation digital elevation model (DEM) of\u00a0the Weddell Sea sector, West Antarctica. The DEM consists a total area of ~125,000 km<sup>2</sup>\u00a0covering the Institute,\u00a0M\u00f6ller and Foundation ice streams and the Bungenstock Ice Rise with a 1 km spatial resolution.\u00a0</p>\n\n<p>In order to produce the bed elevation DEM, ice thickness DEM was formed\u00a0from the available radio-echo sounding (RES) data using the 'Topo to Raster' function in ArcGIS. The RES data used in this study were compiled from four main sources which are (1) Scott Polar Research Institute (SPRI) survey collected during several campaigns in\u00a0the 1970s (Drewry, 1983), (2) British Antarctic Survey (BAS) airborne radar survey conducted during the austal summer 2006/07 (GRADES/IMAGE) (Ashmore et al., 2014). , (3) BAS airborne survey accomplished during the\u00a0Institute and\u00a0M\u00f6ller Antarctic Funding Initiative (IMAFI) in 2010/2011 (Ross et al., 2012)\u00a0and (4) Center for the Remote Sensing of Ice Sheet (CReSIS) data during the NASA Operation IceBridge (OIB) programme in 2012,\u00a02014 and 2016 (Gogineni, 2012). The ice thickness picks were\u00a0gridded at a uniform 1-km spacing using the Nearest Neighbour interpolation within the Topo to Raster. The ice thickness DEM was later subtracted\u00a0from the 1-km ice-sheet surface elevation derived from the combined European Remote Sensing Satellite-1 (ERS-1) radar and Ice, Cloud and land Elevation Satellite (ICESat) laser satellite altimetry DEM (Bamber et al., 2009), to produce the bed topography referenced to the Polar Stereographic projection (Snyder, 1987).\u00a0</p>", 
  "license": "https://creativecommons.org/licenses/by-nc/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "Imperial College London", 
      "@type": "Person", 
      "name": "Jeofry, Hafeez"
    }, 
    {
      "affiliation": "Newcastle University", 
      "@type": "Person", 
      "name": "Ross, Neil"
    }, 
    {
      "affiliation": "British Antarctic Survey", 
      "@type": "Person", 
      "name": "Corr, Hugh F.J."
    }, 
    {
      "affiliation": "Center for Remote Sensing of Ice Sheets", 
      "@type": "Person", 
      "name": "Li, Jilu"
    }, 
    {
      "affiliation": "The University of Alabama", 
      "@type": "Person", 
      "name": "Gogineni, Prasad"
    }, 
    {
      "affiliation": "Imperial College London", 
      "@type": "Person", 
      "name": "Siegert, Martin J."
    }
  ], 
  "url": "https://zenodo.org/record/1035488", 
  "datePublished": "2017-09-25", 
  "keywords": [
    "1-km bed topography digital elevation model (DEM), subglacial water pathway, radio-echo sounding (RES)."
  ], 
  "@context": "https://schema.org/", 
  "distribution": [
    {
      "contentUrl": "https://zenodo.org/api/files/0aabe20c-38d6-41e7-a4e3-e82c69edc788/1km_bed_elevation.zip", 
      "encodingFormat": "zip", 
      "@type": "DataDownload"
    }
  ], 
  "identifier": "https://doi.org/10.5281/zenodo.1035488", 
  "@id": "https://doi.org/10.5281/zenodo.1035488", 
  "@type": "Dataset", 
  "name": "1-km bed topography digital elevation model (DEM) of the Weddell Sea sector, West Antarctica"
}
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