Late-Holocene East Antarctic climate trends from ice-core and lake-sediment proxies

A high-resolution record of evaporation for the last 650 years was derived from the diatom-salinity signal preserved in a sediment core taken from Ace Lake, Vestfold Hills (68 28S, 78 11E), Antarctica. The seasonal oxygen isotope signal preserved in an ice core from Law Dome (66 44S, 112 50E), Antar...

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Bibliographic Details
Published in:The Holocene
Main Authors: Roberts, D, van Ommen, TD, McMinn, A, Morgan, VI, Roberts, JL
Format: Article in Journal/Newspaper
Language:English
Published: Arnold, Hodder Headline Plc 2001
Subjects:
Earth Sciences
Geology
Palaeontology (incl. Palynology)
Antarctic
East Antarctica
Vestfold Hills
Vestfold
Law Dome
Ace Lake
Antarc*
Antarctica
ice core
Online Access:https://doi.org/10.1191/095968301677143452
http://ecite.utas.edu.au/22157
Description
Summary:A high-resolution record of evaporation for the last 650 years was derived from the diatom-salinity signal preserved in a sediment core taken from Ace Lake, Vestfold Hills (68 28S, 78 11E), Antarctica. The seasonal oxygen isotope signal preserved in an ice core from Law Dome (66 44S, 112 50E), Antarctica, revealed a high-resolution summer temperature record for the same time period. The two proxies show highly correlated behaviour despite having significantly different climatic response mechanisms and a large geographic separation. The correlation observed between proxies based on such differing processes and analytical methodologies provides not only a climate record for the past 650 years that is both robust and regionally representative of coastal East Antarctica but also confirmation of the utility of reconstructions using these methods.

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