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.
THERMAL AND GEOCHEMICAL INVESTIGATIONS ABOUT SOME ICE WEDGES OF NORTHERN VICTORIA LAND (ANTARCTICA) / Raffi, Rossana; B., Stenni; O., Flora; U., Gentili. - In: TERRA NOSTRA. - ISSN 0946-8978. - STAMPA. - (2005), pp. 112-112. (Intervento presentato al convegno Second European Conference on Permafrost tenutosi a Potsdam - Germany nel 12 - 16 June, 2005).
THERMAL AND GEOCHEMICAL INVESTIGATIONS ABOUT SOME ICE WEDGES OF NORTHERN VICTORIA LAND (ANTARCTICA)
RAFFI, Rossana;
2005
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
