Glacier mass balances (1993–2001), Taylor Valley, McMurdo Dry Valleys, Antarctica
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چکیده
منابع مشابه
Shallow seismic surveys and ice thickness estimates of the Mullins Valley debris-covered glacier, McMurdo Dry Valleys, Antarctica
Several debris-covered glaciers occupy tributaries of upper Beacon Valley, Antarctica. Understanding their flow dynamics and ice thickness is important for palaeoclimate studies and for understanding the origins of ancient ice elsewhere in the McMurdo Dry Valleys region. We present the results of several shallow seismic surveys in Mullins Valley, where the largest of these debris-covered glacie...
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The cold polar glaciers of the McMurdo Dry Valleys (MCMDV), Antarctica, are characterized by low accumulation (10 cmw.e. a), high sublimation (7–9 cmw.e. a) and low melt rates (1–3 cmw.e. a) (Fountain and others, 1998). Meltwater production and flow is limited to the near surface of these cold polar glaciers, where the average ice temperature at 15m depth is –178C. Meltwater flow, as on other g...
متن کاملGlacier advance during Marine Isotope Stage 11 in the McMurdo Dry Valleys of Antarctica
We mapped six distinct glacial moraines alongside Stocking Glacier in the McMurdo Dry Valleys, Antarctica. Stocking Glacier is one of several alpine glaciers in the Dry Valleys fringed by multiple cold-based drop moraines. To determine the age of the outermost moraine, we collected 10 boulders of Ferrar Dolerite along the crest of the moraine and analyzed mineral separates of pyroxene for cosmo...
متن کاملAccelerated thermokarst formation in the McMurdo Dry Valleys, Antarctica
Thermokarst is a land surface lowered and disrupted by melting ground ice. Thermokarst is a major driver of landscape change in the Arctic, but has been considered to be a minor process in Antarctica. Here, we use ground-based and airborne LiDAR coupled with timelapse imaging and meteorological data to show that 1) thermokarst formation has accelerated in Garwood Valley, Antarctica; 2) the rate...
متن کاملDraft genome sequence of Paenisporosarcina sp. strain TG-14, a psychrophilic bacterium isolated from sediment-laden stratified basal ice from Taylor Glacier, McMurdo Dry Valleys, Antarctica.
The psychrophilic bacterium Paenisporosarcina sp. TG-14 was isolated from sediment-laden stratified basal ice from Taylor Glacier, McMurdo Dry Valleys, Antarctica. Here we report the draft genome sequence of this strain, which may provide useful information on the cold adaptation mechanism in extremely variable environments.
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 2006
ISSN: 0022-1430,1727-5652
DOI: 10.3189/172756506781828511