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|Title: ||Late Quaternary glacial history constrains glacio-isostatic rebound in Enderby Land, East Antarctica|
|Authors: ||White, DA|
|Keywords: ||ICES PROGRAM|
|Issue Date: ||1-Mar-2014|
|Publisher: ||AGU Publications|
|Citation: ||White, D. A., & Fink, D. (2014). Late Quaternary glacial history constrains glacio-isostatic rebound in Enderby Land, East Antarctica. Journal of Geophysical Research-Earth Surface, 119(3), 401-413. doi: http://dx.doi.org/10.1002/2013jf002870|
|Abstract: ||Measurements of the loss or gain of ice mass from large ice sheets are presently achieved through satellite-based techniques such as GRACE (Gravity Recovery and Climate Experiment). The accuracy of these satellite-based measurements to changes in modern ice sheet mass depends on our knowledge of present-day glacio-isostatic crustal uplift rates caused by past ice sheet changes. To improve models of glacio-isostatic rebound in East Antarctica, we investigated ice histories along Rayner Glacier, Enderby Land, and a little explored sector of the ice sheet where GRACE data had suggested significant mass gain during the last decade. Observations from a recent glacial geomorphic reconnaissance coupled with cosmogenic nuclide dating indicate that in the lower part of the Rayner Glacier, Enderby Land, ice heights lowered by at least 300 m and the calving margin retreated by at least 10 km in the early Holocene (~6 to 9 ka B.P.). The magnitude and timing of deglaciation are consistent with ice histories used to model the postglacial rebound corrections for present-day GRACE mass trends. These observations strengthen the body of evidence that suggests ice mass gain in Enderby Land is presently partly offsetting mass loss in other parts of Antarctica.© 2014, American Geophysical Union.|
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