SPATIAL-PATTERN AND TEMPORAL-PATTERN IN SNOW ACCUMULATION, WESTERN DRONNING-MAUD-LAND, ANTARCTICA

Citation
E. Isaksson et W. Karlen, SPATIAL-PATTERN AND TEMPORAL-PATTERN IN SNOW ACCUMULATION, WESTERN DRONNING-MAUD-LAND, ANTARCTICA, Journal of Glaciology, 40(135), 1994, pp. 399-409
Citations number
45
Categorie Soggetti
Geology
Journal title
ISSN journal
00221430
Volume
40
Issue
135
Year of publication
1994
Pages
399 - 409
Database
ISI
SICI code
0022-1430(1994)40:135<399:SATISA>2.0.ZU;2-N
Abstract
During the Swedish Antarctic Expedition to Dronning Maud Land, Antarct ica, 1988-89 the net accumulation was estimated for an area from the c oast to about 400 km inland. Stake measurements were used to obtain th e spatial variability and firn cores were used for the temporal variab ility. The mean annual accumulation for the period 1976-88 is about 0. 4 m w.e, for Riiser-Larsenisen and about 0.3 m w.e. for the area above the grounding line. The accumulation rate at higher altitudes, > 2500 m a.s.l., is about 0.1 m w.e. for 1955-88. One record from the ice sh elf covers the period 1957-88, and suggests an increase in accumulatio n of about 12%. Between 1976 and 1988, the accumulation has decreased by about 50%, most likely due to lower temperatures as suggested by th e temperature record from Halley.