Subglacial bed roughness of Greenland, provided using two independent metrics

  • Michael Cooper (Creator)
  • Thomas Jordan (Contributor)
  • Michael Cooper (Contributor)
  • Dustin M. Schroeder (Contributor)
  • Martin Siegert (Contributor)
  • Chris Williams (Contributor)
  • Jonathan L Bamber (Contributor)

Dataset

Description

These two files (.csv) provide independent methods of quantifying subglacial roughness in Greenland, both calculated from radio-echo sounding (or ice penetrating radar) data collected by the Operation Ice Bridge programme using CReSIS instrumentation. They are an output of the Basal Properties of Greenland (BPOG) project (http://bpog.blogs.ilrt.org/), with funding from NERC grant NE/M000869/1. Roughness here, and in the wider literature, is defined as the variation in bed elevation (in the vertical) at the ice-bed interface, over a given length-scale. These two metrics calculate/quantify this variation in different ways: one shows topographic-scale roughness, calculated from the variation in along-track topography (bed elevation measurements derived from the radar pulse); and the other shows scattering-derived roughness, calculated from quantifying characteristics of each bed-echo (the return from the radar pulse at the ice-bed interface).
Date made available2 Feb 2018
PublisherPolar Data Centre, Natural Environment Research Council, UK
Date of data production1 Jan 1993 - 1 Jan 2016
Geographical coverageGreenland
Geospatial polygon60.0, 10.0, 90.0, -80.0

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