Reconstructing ice-sheet accumulation rates at ridge B, East Antarctica
نویسندگان
چکیده
منابع مشابه
Spatio-temporal variability of past accumulation rates inferred from isochronous layers at Dome A, East Antarctica
Studies of palaeo-accumulation rates at Dome A, East Antarctica, are entirely absent. Here, spatio-temporal variations in ice accumulation rates for the past ∼161 ka are calculated from isochronous internal layering, traced from radio-echo sounding (RES) data collected by the Polar Research Institute of China (PRIC) during the 21st CHINARE. The layers are dated by linking them to the site of Vo...
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The dynamics of ocean-terminating outlet glaciers are an important component of ice-sheet mass balance. Using satellite imagery for the past 40 years, we compile an approximately decadal record of outlet-glacier terminus position change around the entire East Antarctic Ice Sheet (EAIS) marine margin. We find that most outlet glaciers retreated during the period 1974-1990, before switching to ad...
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A lateral moraine band on Mount Waesche, a volcanic nunatak in Marie Byrd Land, provides estimates of past ice sheet surface elevations in West Antarctica. Helium-3 and chlorine-36 surface exposure ages indicate that the proximal part of the moraine, up to 45 meters above the present ice surface, was deposited about 10,000 years ago, substantially later than the maximum ice extent in the Ross E...
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The dual-frequency altimeter of Topex allows since few years the observations of earth from 62°N to 62°S both in Ku and in C band. Previous works has been already performed above continental areas by [1, 2, 3, 4] and above the southern part of the Greenland ice sheet [5, 6]. These works show the great interest of a dual-frequency above both for the retrieval of some geophysical parameters and f...
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The Late Pliocene epoch is a potential analogue for future climate in a warming world. Here we reconstruct Plio-Pleistocene East Antarctic Ice Sheet (EAIS) variability using cosmogenic nuclide exposure ages and model simulations to better understand ice sheet behaviour under such warm conditions. New and previously published exposure ages indicate interior-thickening during the Pliocene. An ice...
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 2004
ISSN: 0260-3055,1727-5644
DOI: 10.3189/172756404781814519