Glaciological investigations in east greenland using digital landsat imagery ...

• Main Author: Nuttall, Anne-Marie
• Format: Thesis
• Language: English
• Published: Apollo - University of Cambridge Repository 1993
• Subjects: East Greenland; Greenland
• Online Access: https://dx.doi.org/10.17863/cam.12847; https://www.repository.cam.ac.uk/handle/1810/266776

Sixteen late summer Landsat MSS scenes of East Greenland from 1986 to 1989 were acquired for use in glaciological and marine geological investigations. Drainage basin areas and snowline elevations were determined for 74 tidewater glaciers in the study area, and turbid meltwater plumes were identified. A method of correcting digital Landsat MSS data for the effects of atmospheric haze has been developed and tested. The method consists of subtracting the radiance value of clear, open water measured in each of the four bands from the total radiance of each band. Verification of the haze correction technique, by comparing two overlapping scenes acquired two days apart, showed that the results were consistent to within 6% or less in all bands over four terrain types: bare ice, snow, bare rock and turbid lakewater. Analysis of band 4 Landsat MSS data (0.8 to 1.1 ?m) has been used to identify ice divides and drainage basin areas for tidewater glaciers in East Greenland between 67°N and 75°N. Basin areas ranged from ...