University of Tasmania
Browse
131769 - Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr.pdf (4.55 MB)

Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr

Download (4.55 MB)
journal contribution
posted on 2023-05-20, 02:28 authored by Cavitte, MGP, Parrenin, F, Ritz, C, Young, A, Van Liefferinge, B, Blankenship, DD, Frezzotti, M, Jason RobertsJason Roberts
We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow model to invert for accumulation rates in the region. The shallowest four isochrones are then used to calculate paleoaccumulation rates between isochrone pairs using a 1-D assumption where horizontal advection is negligible in the time interval of each layer. We observe that the large-scale (100skm) surface accumulation gradient is spatially stable through the last 73kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10skm) accumulation variations linked to snow redistribution at the surface, due to changes in its slope and curvature in the prevailing wind direction that remain spatially stationary since the last glacial.

History

Publication title

Cryosphere

Volume

12

Issue

4

Pagination

1401-1414

ISSN

1994-0416

Department/School

Institute for Marine and Antarctic Studies

Publisher

Copernicus GmbH

Place of publication

Germany

Rights statement

© Author(s) 2018. Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/

Repository Status

  • Open

Socio-economic Objectives

Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts)

Usage metrics

    University Of Tasmania

    Categories

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC