IGB

Connexion

(LongyearbyenPACE21 Field Workshop en Anglais - 2005)

Document title

Ground penetrating radar investigations of open system pingos, Adventdalen, Svalbard

published at : Permafrost geomorphological systems in a changing global climate. Special issue

Authors(s) and Affiliation(s)

ROSS N. ; HARRIS C. ; CHRISTIANSEN H.H. ; BRABHAM P.J. ;

Abstract

Ground penetrating radar (GPR) investigations conducted on 2 open system pingos, Innerhytte pingo and Riverbed pingo, are described. Surface exposures suggest that both pingos are largely formed in weak Jurassic shales. Little evidence for the presence of large bodies of massive ice was found. Strong subsurface reflections within the core of both pingos are interpreted as representing either the presence of alternating shale and ice units, or variations in the chemistry, ice crystal properties or air content of pingo ice. Both pingos are characterized by conspicuous surface icings, with groundwater flow to the surface in late winter, prior to initiation of actve-layer thawing, suggesting derivation from a deep groundwater source

Source

Congrès

PACE21 Field Workshop, Longyearbyen , NORVEGE (08/09/2004)

published at : Norsk geografisk tidsskrift / ISSN 0029-1951 / CODEN NGGTA2

Editor : Norske geografiske selskab, Oslo ; Universitetsforlaget, Oslo - NORVEGE (1926)

Millesime : 2005, vol. 59, no 2 [pp. 129-138]

Bibliographic references : 55 ref.

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 3914

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2005.
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