Sea-bed depths at the mouth of Rutford Ice Stream, Antarctica
نویسندگان
چکیده
منابع مشابه
Radar surveys of the Rutford Ice Stream onset zone, West Antarctica: indications of flow (in)stability?
We present 1 and 100MHz ground-based radar data from the onset region of Rutford Ice Stream, West Antarctica, which indicate the form and internal structure of isochrones. In the flowparallel lines, modelled isochrone patterns reproduce the gross pattern of the imaged near-surface layers, assuming steady-state flow velocity from GPS records and the current accumulation rate for the last 200 yea...
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To better understand the influence of stress changes over floating ice shelves on grounded ice streams, we develop a Bayesian method for inferring time-dependent 3-D surface velocity fields from synthetic aperture radar (SAR) and optical remote sensing data. Our specific goal is to observe ocean tide-induced variability in vertical ice shelf position and horizontal ice stream flow. Thus, we con...
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[1] Surface all-wave albedo and physical parameters (grain radius, mass density, surface temperature, and stratification) of an austral summer snow cover on sea ice were measured in the Ross Sea during January-February 1999. It was observed that (1) from north to south the snow surface temperature decreases, albedo increases, snow mass density decreases, snow composite grain radius decreases, a...
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To ascertain whether the , ·elocity of Ice Stream B, \\'est Antarctica, may be controlled by the stres e in its marginal shear zones \ the .. Snake" and the .. Dragon'· ), we undertook a determination of the marginal hear stress in the Dragon near Camp up B by using ice itself as a stress meter. The ob erved marginal shear strain rate of0.14 a I is used to calculate the marginal shear stress fr...
متن کاملChanges in the Margin of Ice Stream C, Antarctica
We present results from satellite imagery, ice motion surveys, and ice-penetrating radar studies of a portion of the north margin of Ice Stream C, one of the ice streams draining the West Antarctic Ice Sheet to the Ross Embayment. Our studies suggest that the shutdown of Ice Stream C about 150 years ago was not a single event but a sequence involving stagnation of ice and migration of the ice s...
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 1994
ISSN: 0260-3055,1727-5644
DOI: 10.3189/172756494794587320