Trapping of aeolian sediments and build-up of the ice cover of a dry-based Antarctic lake Earth Surface Processes and Landforms

Among the perennially frozen lakes of the Dry Valleys of South Victoria Land (Antarctica), some are dry-based, i.e. frozen to the bottom. One of these is studied here by a multiparametric investigation (isotopic composition in δD and δ18O, ions, gas and ice texture analyses). A sediment layer about...

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Bibliographic Details
Main Authors: Sleewaegen, Suzanne, Lorrain, Reginald, Offer, Zvi Yehoshua, Azmon, E, Fitzsimons, Sean, Souchez, Roland
Format: Article in Journal/Newspaper
Language:English
Published: 2002
Subjects:
Glaciologie
Aeolian sediments
Antarctica
Dry valleys
Lake ice
Stable isotopes
Antarc*
Antarctic
Victoria Land
Online Access:http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/94878
https://dipot.ulb.ac.be/dspace/bitstream/2013/94878/3/94878.pdf
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Summary:Among the perennially frozen lakes of the Dry Valleys of South Victoria Land (Antarctica), some are dry-based, i.e. frozen to the bottom. One of these is studied here by a multiparametric investigation (isotopic composition in δD and δ18O, ions, gas and ice texture analyses). A sediment layer about 10 cm thick appearing at a depth of 3.5 m is also studied by grain size, X-ray diffraction and scanning electron microscope analyses. The information retrieved indicates that this ice-block lake results from a build-up in two steps and explains how acolian sediments were included as a layer into the ice. Copyright © 2002 John Wiley and Sons, Ltd. SCOPUS: ar.j FLWIN info:eu-repo/semantics/published

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