Mots-clés
Changement global Datation C 14 Dendrochronologie Etats-Unis Holocène Lac Ligne de rivage Michigan Niveau lacustre Oscillation climatique Paléo-environnement Variation climatique C 14 dating Climate oscillation Climatic variation Dendrochronology Global change Holocene Lake Lake level Michigan Palaeo-environment Shoreline United States of AmericaLate-Holocene formation of Lake Michigan beach ridges correlated with a 70-yr oscillation in global climate
Auteur(s) et Affiliation(s)
DELCOURT, P.A.
University of Tennessee, Dept. of Geological Sciences, Knoxville, Tennessee, Etats-Unis
Description :
A radiocarbon-dated series of 75 beach ridges, formed at regular intervals averaging 72 yr over the past 5400 yr, provides further support for the existence of a 70-yr oscilllation in Northern Hemisphere climate, postulated recently from instrument data representing less than two cycles of this climate oscillation. Results from this study lend support to the interpretation that internal variations in the ocean-atmosphere system are an important factor in climate fluctuations on a decadal-centennial time scale.
Type de document :
Article de périodique
Source :
Quaternary research, issn : 0033-5894, 1996, vol. 45, n°. 3, p. 321-326, Collation : Illustration, Références bibliographiques : 28 ref.
Date :
1996
Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)