Propose une intéressante méthode de délignage des données multispectrales plus performante que celle de Horn et Wood Ram (Computer Graphics and Image Processing, vol. 10, p. 69-83). - (CB)
Radiocarbon dating of fossil wood remains buried by the Piancabella rock glacier, Blenio Valley (Ticino, Southern Swiss Alps) : implications for rock glacier, treeline and climate history
Alps (The) ; C 14 dating ; Fossil wood ; Middle Ages ; Mountain ; Palaeo-environment ; Palaeoclimate ; Permafrost ; Rock glacier ; Switzerland ; Ticino ; Tree line
This paper presents the results of radiacarbon dating of fossil wood stem remains of larch (Larix decidua) found 1 m below the surface at the base of the front of the Piancabella rock glacier in September 2005 within the framework
8000 year old wood from the Athabasca Glacier, Alberta
De nombreux morceaux de bois de Pinus sp. (datés à 8230 +- 80 et 8000 +- 90 B. P.) et d'Abies sp. ont été récupérés dans le front du glacier d'Athabasca. Ce bois dérivé d'un lieu inconnu mais situé en amont dans la vallée, révèle que le glacier
durant l'optimum climatique postglaciaire était moins étendu qu'actuellement et qu'il y a environ 8000-8300 ans B. P. une région dans la vallée, en amont du front actuel du glacier, était recouverte d'arbres.
This paper describes the habitats used by migrant species at a migratory stop-over site in an urban wooded environment in Georgia. The diversity of habitat use by migrating and resident species will be compared, as well as the degree to which
The AA. discuss the vegetation record obtained from fossil pollen and wood, a possible history of sediment deposition, and the sequence of environmental change that is implied. Finally, they consider the chronology of this site, and of others
Author reports on the research performed at the Department of Environmental Protection, University of Forestry and Wood Industry (Sopron). The objective of the research was to investigate the general problems of environmental monitoring, first