Changes in the extent and geometry of the Scott Glacier, Spitsbergen

• Autorzy: Zagorski P , Siwek K. , Gluza A. , Bartoszewski S.A.
• Języki publikacji: EN

Abstrakty

EN

Spitsbergen glaciers react rapidly to changes in the polar environment, which is expressed in differences in extent of their fronts and surface geometry. The Scott Glacier, which is situated in the NW part of Wedel Jarlsberg Land, is an example of the glacier that has undergone almost continuous recession since the Little Ice Age, interrupted by surges. The variations in recession are characterised based on multiannual data with particularly consideration of the period 1990-2005 and the season 2005/2006. Acceleration of front recession and lowering the surface was found only within the tongue up to a height of about 220 m a.s.l. Whereas, in the area situated in the zone of rock steps and above in the ablation zone, the change of glacier surface ablation (∆h) has been recorded compared to the mean annual recession for the period 1990-2005. Moreover, for the upper firn field, the positive surface ablation (∆AhS7 = +0.19 m) was observed. As the result of progressive reduction of the Scott Glacier mass, with the participation of other factors (bedrock relief among others), new surfaces of roche moutonnée are uncovering particularly in the tongue zone.

• Wydawca: -
• Czasopismo: Polish Polar Research
• Rocznik: 2008
• Tom: 29
• Numer: 2
• Opis fizyczny: p.163-185,fig.,ref.

Twórcy

autor

Zagorski P

• Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland

autor

Siwek K.

autor

Gluza A.

autor

Bartoszewski S.A.

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