Palaeoclimatic information from stable water isotopes of Holocene ice wedges on the Dmitrii Laptev Strait, northeast Siberia, Russia

Special Issue : Stable isotopes and geochemistry of ground ice

Auteur(s) et Affiliation(s)

OPEL, T.

Alfred Wegener Inst. for Polar and Marine Research, Research Unit, Potsdam, Allemagne

Dep. of Geography, Humboldt-Univ., Berlin, Allemagne

DEREVIAGIN, A.Y.

Fac. of Geology, State Univ., Moscou, Russie, Federation de

MEYER, H.

Alfred Wegener Inst. for Polar and Marine Research, Research Unit, Potsdam, Allemagne

SCHIRRMEISTER, L.

Alfred Wegener Inst. for Polar and Marine Research, Research Unit, Potsdam, Allemagne

WETTERICH, S.

Alfred Wegener Inst. for Polar and Marine Research, Research Unit, Potsdam, Allemagne

MEYER, H.

Alfred Wegener Inst. for Polar and Marine Research, Research Unit, Potsdam, Allemagne

SLETTEN, R.S.

Univ. of Washington, Seattle, Etats-Unis

Description :
The stable isotopic composition (andO 18, andD, d) of 3 Holocene-age ice wedges at the Dmitrii Laptev Strait was studied at high resolution in order to develop palaeoclimatic records. AMS C 14 ages of organic matter in the ice prove the Late Holocene age of the studied horizontal ice-wedge profiles and indicate syngenetic growth associated with sediment accumulation. A general Late Holocene winter warming trend is inferred from andO 18 data with periods of marked variability superimposed on the trend. This trend is accompanied by a shift in the d excess, probably caused by varying proportions of differing moisture sources for precipitation.

Type de document :
Article de monographie

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2011, vol. 22, n°. 1, p. 84-100, nombre de pages : 17, Références bibliographiques : 60 ref.

Date :
2011

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

Langue :
Anglais