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(Article of periodic en Anglais - 2013)

Document title

The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, Northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines

published at : The 50th Anniversary of the First International Conference on Permafrost and Beyond

Authors(s) and Affiliation(s)

LILLEØREN K.S. (1) ; ETZELMÜLLER B. (1) ; GÄRTNER-ROER I. (2) ; KÄÄB A. (1) ; WESTERMANN S. (1) ; GUƠMUNDSSON Á (3) ;
(1) Dept. of Geosciences, Univ., Oslo, NORVEGE
(2) Dept. of Geography, Univ., Zürich, SUISSE
(3) Jarðfræðistofan GEOICE Geological Services, Reykjavik, ISLANDE

Abstract

This study combines recently published aerial photographs (2002–07), radar interferometry based on Advanced Land Observing Satellite phased array type L-band synthetic aperture radar (ALOS PALSAR) data (2007), land surface temperatures estimated from moderate-resolution imaging spectroradiometer satellite data (MODIS; 2003–10) and field mapping to re-examine the permafrost distribution, thermal characteristics and dynamics on the Tröllaskagi peninsula. An inventory of 265 landforms, mostly active or inactive (intact), categorised them by genesis and activity, the latter independently investigated by PALSAR interferometry. Intact landforms are mainly glacigenic, occurring as moraine-derived rock glaciers or ice-cored moraines. Their dominant orientation is between north and northeast, suggesting that topography and exposure influence their present-day formation. Permafrost landforms exist at all elevations on the Tröllaskagi peninsula, with intact landforms at high elevations and relict landforms reaching down to sea level. Rock glaciers at sea level may imply early deglaciation of northern Iceland

Source

Thematical fascicle

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2013, vol. 24, no 4 [pp. 322-335]

Bibliographic references : 2 p.

Collation : fig., tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1792

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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