The magnitude and proximate cause of ice-sheet growth since 35,000 yr B.P.

Auteur :
WINOGRAD, I.J.

Description :
A conservative evaluation of glacial-geologic, sea level, and benthic δ O 18 data indicates that ice volume at 35,000 yr B.P. was approximately 50% of that extant at the Last Glacial Maximum, LGM, (20,000 yr B.P.); that is, it doubled in about 15,000 yr. On the basis of literature for the North Atlantic and a sea-surface temperature (SST) data compilation, it appears that this rapid growth may have been forced by low-to-mid-latitude SST warming in both the Atlantic and Pacific Oceans, with attendant increased moisture transport to high latitudes. The SST ice-sheet growth notion also explains the apparent synchroneity of late Wisconsinan mountain glaciation in both hemispheres.


Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 2001, vol. 56, n°. 3, p. 299-307, nombre de pages : 9, Collation : Illustration, Références bibliographiques : 72 ref.

Date :
2001

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier