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Investigating the potential to determine the upstream accumulation rate, using mass flux calculations along a cross-section on a small tributary glacier in Heimefrontfjella, Dronning Maud Land, Antarctica
Uppsala universitet, Luft-, vatten och landskapslära.
Uppsala universitet, Miljö- och landskapsdynamik.
Responsible organisation
2004 (English)In: Annals of Glaciology, ISSN 0260-3055, E-ISSN 1727-5644, Vol. 39, no 1, 175-180 p.Article in journal (Refereed) Published
Abstract [en]

How well can we estimate the incoming ice flux by calculating the ice flux through a well-defined cross-section? We test this by comparing calculated ice flux out from the small glacier Bonnevie-Svendsenbreen with the measured accumulation rate integrated over the well-defined catchment area in the Sivorgfjella plateau, Dronning Maud Land, Antarctica (74°45′S, 11°10′W). The ice flux is calculated using ice-dynamical properties from an ice temperature model and the distribution of forces calculated using a force-budget model. The input we use includes velocity data of the glacier surface, combined with ice-thickness measurements. The result is an accumulation rate on the Sivorgfjella plateau of 0.50 ± 0.05 m w.e.a−1. We find that this is similar to the accumulation rate recorded by ground-penetrating radar work in the area. We therefore find the balance-flow method, in combination with the force-budget technique and ice temperature modeling, to be a useful tool for studies of mass fluxes in a catchment area. The most important source of uncertainty in these calculations is the quality and the spatial distribution of the ice surface velocity data. The high accumulation rate shows the effect of orographic enhancement on accumulation in montane areas in Antarctica.

Place, publisher, year, edition, pages
2004. Vol. 39, no 1, 175-180 p.
National Category
Earth and Related Environmental Sciences
Research subject
SWEDARP 2002/03, DML 2002/03; SWEDARP 1989/90, ANT VIII/5
Identifiers
URN: urn:nbn:se:polar:diva-3412DOI: 10.3189/172756404781814555OAI: oai:DiVA.org:polar-3412DiVA: diva2:1078192
Conference
Papers from the Seventh International Symposium on Antarctic Glaciology(ISAG-7)held at Milano, Italy,25-29 August, 2003
Available from: 2004-04-16 Created: 2017-03-02

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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