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° 28's, 78° 11'E), Antarctica. The seasonal oxygen isotope signal preserved in an ice core from Law Dome (66° 44�...

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Bibliographic Details
Published in:The Holocene
Main Authors: Roberts, Donna, van Ommen, Tas D., McMinn, Andrew, Morgan, Vin, Roberts, Jason L.
Format: Article in Journal/Newspaper
Language:English
Published: SAGE Publications 2001
Subjects:
Paleontology
Earth-Surface Processes
Ecology
Archeology
Global and Planetary Change
Ace Lake
Antarctic
East Antarctica
Law Dome
Vestfold
Vestfold Hills
Antarc*
Antarctica
E. Antarctica
ice core
Online Access:http://dx.doi.org/10.1191/095968301677143452
http://journals.sagepub.com/doi/pdf/10.1191/095968301677143452
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° 28's, 78° 11'E), Antarctica. The seasonal oxygen isotope signal preserved in an ice core from Law Dome (66° 44'S, 112° 50'E), 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 method ologies 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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