Depositional environment of the snow cover on West Antarctic pack-ice floes
نویسندگان
چکیده
منابع مشابه
Snow on Antarctic Sea Ice
Snow on Antarctic sea ice plays a complex and highly variable role in air-sea-ice interaction processes and the Earth’s climate system. Using data collected mostly during the past 10 years, this paper reviews the following topics: snow thickness and snow type and their geographical and seasonal variations; snow grain size, density, and salinity; frequency of occurrence of slush; thermal conduct...
متن کاملChemistry of Antarctic Snow and Ice
We have studied 1000 samples of snow and ice from East and West Antarctica (coastal as well as central areas). These samples cover different time periods ua to 30,900 y$ars+$.P+. 1% the-meltwaterl we have measured major ions (i.e. Na, NH4 , K , Ca , Mg , H , C1 , NO3 , and SO4 ) using stringent contamination free tehniques. A very close balance between anions and cations is observed, making it ...
متن کاملWest Antarctic Ice Sheet Initiative
The ocean's influence upon and response to Antarctic ice sheet changes is considered in relation to sea level rise over recent and future decades. Assuming present-day ice fronts are in approximate equilibrium, a preliminary budget for the ice sheet is estimated from accumulation vs. iceberg calving and the basal melting that occurs beneath floating ice shelves. Iceberg calving is derived from ...
متن کاملBacteria beneath the West Antarctic ice sheet.
Subglacial environments, particularly those that lie beneath polar ice sheets, are beginning to be recognized as an important part of Earth's biosphere. However, except for indirect indications of microbial assemblages in subglacial Lake Vostok, Antarctica, no sub-ice sheet environments have been shown to support microbial ecosystems. Here we report 16S rRNA gene and isolate diversity in sedime...
متن کاملSeasonal change of antarctic sea ice cover.
The winter expansion of the sea ice surrounding Antarctica and the subsequent retreat of the ice in summer may be linked with the wind stress acting on the Southern Ocean in conjunction with the heat exchange in open water regions within the ice fields.
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 1994
ISSN: 0260-3055,1727-5644
DOI: 10.3189/172756494794587546