Spatial and temporal patterns in snow accumulation, western Dronning Maud Land, Antarctica
نویسندگان
چکیده
منابع مشابه
Moisture source of precipitation in Western Dronning Maud Land, Antarctica
Moisture sources for snow falling in Dronning Maud Land (DML), Antarctica, are calculated for 1998 using three dimensional 5-days backward air parcel trajectories. The drilling site of the European Project onIce CoringinAntarctica(EP1CA) inDMLischosenasthemainarrivalpoint (75.0°S, 0.01"E). Adistinction is made between trajectories with and without snowfall at arrival. Of the snowfall trajectori...
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We study the presence and effect of subglacial water on the motion of inland ice in western Dronning Maud Land, Antarctica. A full-Stokes model including three routing schemes for a thin film of subglacial water and a modification of a Weertman-type sliding relation, to account for higher sliding velocities under wet basal conditions, were used to perform 200 ka spin-up simulations on a 2.5 km ...
متن کاملEvidence for physical and chemical stratification in Lake Untersee (central Dronning Maud Land, East Antarctica)
Lake Untersee is the largest freshwater lake in the interior of East Antarctica. It is a perennially ice-covered, max. 169 m deep, ultra-oligotrophic lake. In contrast to earlier studies, we found clear evidence for physical and chemical stratification in the summer of 1991-92. However, the stratification was restricted to a trough, c. 500 m wide and up to 105 m deep, in the south-western part ...
متن کاملBiogeochemistry of methane in the permanently ice-covered Lake Untersee, central Dronning Maud Land, East Antarctica
We found unprecedentedly high abundances of microbially produced CH4 in the anoxic deep waters of Lake Untersee, an oligotrophic, perennially ice-covered Antarctic freshwater lake. The maximum CH4 concentration (approaching 21.8 6 1.4 mmol L21) is one of the highest observed so far in a natural aquatic ecosystem. Although surficial lake sediments are the predominant source of CH4 in Lake Unters...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 1994
ISSN: 0022-1430,1727-5652
DOI: 10.1017/s0022143000007486