In:
Antarctic Science, Cambridge University Press (CUP), Vol. 25, No. 4 ( 2013-08), p. 575-582
Kurzfassung:
We report on 475 measurements of depth to ice-cemented ground in four high-elevation valleys of the Quartermain Mountains, McMurdo Dry Valleys, Antarctica. These valleys have pervasive ice-cemented ground, and the depth to ice-cemented ground and the ice composition may be indicators of climate change. In University Valley, the measured depth to ice-cemented ground ranges from 0–98 cm. There is an overall trend of increasing depth to ice-cemented ground with distance from a small glacier at the head of the valley, with a slope of 32 cm depth per kilometre along the valley floor. For Farnell Valley, the depth to ice-cemented ground is roughly constant ( c. 30 cm) in the upper and central parts of the valley, but increases sharply as the valley descends into Beacon Valley. The two valleys north of University Valley also have extensive ice-cemented ground, with depths of 20–40 cm, but exhibit no clear patterns of ice depth with location. For all valleys there is a tendency for the variability in depth to ice-cemented ground at a site to increase with increasing depth to ice. Snow recurrence, solar insolation, and surface albedo may all be factors that cause site to site variations in these valleys.
Materialart:
Online-Ressource
ISSN:
0954-1020
,
1365-2079
DOI:
10.1017/S095410201200123X
Sprache:
Englisch
Verlag:
Cambridge University Press (CUP)
Publikationsdatum:
2013
ZDB Id:
2104104-0
ZDB Id:
1009128-2
SSG:
12
SSG:
13
SSG:
14
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