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The composition and structure of modern ice as indicators for the origin of ancient tabular ground ice and the Pleistocene-Holocene climate history of the Western Arctic

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Only very few glacio- kryological investigations of ancient tabular ground ice of Western Arctic and Subarctic Russia have been undertaken until today. Therefore, the origin and the related Pleistocene-Holocene climate history are still poorly understood.
The aim of the proposed research project is to establish models for the formation of different types of ground ice using comparative studies of various types of natural ice as snow, snow patches, firn (névé), glaciers, ice wedges, pingo ice, icing, massive buried ice and interground ice.
Multidisciplinary studies will be carried out on the different types of natural ice. These include morphometrical and structural-stratigraphic studies as well as a wide range of laboratory analyses as stable isotopes (H, C, O, S) major and trace elements, insoluble micro inclusions and others. Major emphasis is put on the reconstruction of the spatial and temporal distribution of these parameters.
With help of these investigations it is aimed to model the structural transformation and the migration of elements and components in the two typical sequences which may result in the formation of ancient tabular ground ice. e.g. the first sequence of atmospheric precipitation-snow-firn-modern glacier ice-ancient (buried) glacier ice, and the second of atmospheric precipitation- ground water- modern ice wedges ice-ancient ice wedge ice-tabular ground ice. In order to obtain the necessary information natural ice will be studied in the continental Arctic (Polar Urals, Yamal and Yugorskiy peninsulas) and in Svalbard as an example for a more maritime influenced Arctic region. As one expected result an electronic data base of various characteristics of natural ice will be compiled.
Since the Arctic glaciers and ground ice occurrences are known to be the good indicators of climate and environmental change, the complex analysis of these bodies will also make it possible to reconstruct the history of the climate and environment development during late Pleistocene and Holocene times.

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Koordinator

Alfred-Wegener Institute for Polar and Marine Research
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Adresse
Telegrafenberg A43
14471 Potsdam
Deutschland

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Letzte Aktualisierung: 30 Oktober 2002

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Permalink: https://cordis.europa.eu/project/id/INTAS-2001-02211/de

European Union, 2024