THERMAL AND GEOCHEMICAL INVESTIGATIONS ABOUT SOME ICE WEDGES OF NORTHERN VICTORIA LAND (ANTARCTICA)

During the XIV, XVI and XIX Italian Antarctic Expeditions geomorphologic surveys of permafrost-related polygons were carried out in the northern Victoria land. Ice wedges were found in sites with different altitudes and climatic conditions in a vast area extending from the Terra Nova Bay up to Freyb...

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Bibliographic Details
Main Authors: RAFFI, Rossana, B. STENNI, O. FLORA, U. GENTILI
Other Authors: Raffi, Rossana, B., Stenni, O., Flora, U., Gentili
Format: Conference Object
Language:English
Published: GeoUnion Alfred-Wegner-Stiftung 2005
Subjects:
Ice wedge
thermal regime
isotope composition
tritium activity
Antarctic
Freyberg Mountains
Terra Nova Bay
Victoria Land
Antarc*
Antarctica
Ice
permafrost
wedge*
Online Access:http://hdl.handle.net/11573/213634
Description
Summary:During the XIV, XVI and XIX Italian Antarctic Expeditions geomorphologic surveys of permafrost-related polygons were carried out in the northern Victoria land. Ice wedges were found in sites with different altitudes and climatic conditions in a vast area extending from the Terra Nova Bay up to Freyberg Mountains. All the samples were measured for their oxygen isotope ratios and in some cases a co-isotopic study was performed. Tritium activity measurements were also carried out. Ice-wedge thermal regime monitoring at two selected sites showed high temperature gradients between the ground surface and the top of ice wedge.

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