Jakobshavn Glacier, West Greenland: 30 years of spaceborne observations

Hong Gyoo Sohn, Kenneth C. Jezek, C. J. Van Der Veen

Research output: Contribution to journalArticle

128 Citations (Scopus)

Abstract

Early 1960's reconnaissance satellite images are compared to more recent image and map data in an inter-annual and seasonal study of West Central Greenland margin fluctuations. From 1962 to 1992, ice sheet margins to the north and south of Jakobshavn Glacier retreated despite a decline in average summer temperatures. The retreat may be reversing along the southern flank of the ice stream where regional mass balance estimates are positive. From 1950 to 1996, the terminus of Jakobshavn Glacier seasonally fluctuated approx. 2.5 km around its annual mean position. The total calving flux during the summer is more than six times that during winter. We identified that summer melting and the break-up of sea ice and icebergs in the fjord are important in controlling the rate of iceberg production. If correct, calving rates may be expected to increase should climate become warmer in the near future.

Original languageEnglish
Pages (from-to)2699-2702
Number of pages4
JournalGeophysical Research Letters
Volume25
Issue number14
DOIs
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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