Periglacial Appalachia : palaeoclimatic significance of blockfield elevation gradients, eastern USA

Papers in honour of the 90th birthday of Professor emeritus J. Ross Mackay. Special issue

Auteurs :
PARK NELSON, K.J.
NELSON, F.E.
WALEGUR, M.T.
LEWKOWICZ, A.G.

Description :
Locational data for 96 allochtonous blockfields distributed throughout the Appalachian Mountains of eastern USA were obtained using TerraServer, an online resource for viewing air-photo and satellite imagery. Palaeotemperatures calculated using known Appalachian lapse rates and published LGM temperature departures indicate that most blockfields in the study area were formed under climatic conditions conducive to permafrost. Complementary use of these resources and spatial-analytic techniques holds considerable potential for addressing the broad-scale problems with which traditional climatic geomorphology is concerned.


Type de document :
Article de monographie

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2007, vol. 18, n°. 1, p. 61-73, nombre de pages : 13, Collation : Illustration, Références bibliographiques : 58 ref.

Date :
2007

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley