FN Archimer Export Format
PT J
TI Twentieth century warming in deep waters of the Gulf of St. Lawrence: A unique feature of the last millennium
BT 
AF THIBODEAU, Benoit
   DE VERNAL, Anne
   HILLAIRE-MARCEL, Claude
   MUCCI, Alfonso
AS 1:1;2:1;3:1;4:2;
FF 1:;2:;3:;4:;
C1 Univ Quebec, Geochem & Geodynam Res Ctr, Geotop, Montreal, PQ H3C 3P8, Canada.
   McGill Univ, Geochem & Geodynam Res Ctr, Geotop, Dept Earth & Planetary Sci, Montreal, PQ H3A 2A7, Canada.
C2 UNIV QUEBEC (UQAM-GEOTOP), CANADA
   UNIV QUEBEC (UQAM-GEOTOP), CANADA
IF 3.505
TC 29
UR https://archimer.ifremer.fr/doc/00231/34176/32910.pdf
LA English
DT Article
CR IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
BO Marion Dufresne
AB The impact of human activities on Earth's climate is still subject to debate and the pattern of a sharp recent global temperature increase contrasting with much lesser variable temperatures during preceding centuries has often been challenged, partly due to the lack of unquestionable evidence. In this paper, oxygen isotope compositions of benthic foraminifer shells recovered from sediments of the Lower St. Lawrence Estuary and the Gulf are used to reconstruct temperature changes in a water mass originating from similar to 400 m deep North Atlantic waters. The data demonstrate that the 1.7 +/- 0.3 degrees C warming measured during the last century corresponds to a delta(18)O shift of 0.4 +/- 0.05 parts per thousand, encompassing the temperature effect and related change in the isotopic composition of the corresponding water mass. In contrast, d18O values remained nearly constant over the last millennium, except for a small positive shift which we attribute to the Little Ice Age. We conclude that the 20th century warming of the incoming intermediate North Atlantic water has had no equivalent during the last thousand years.
PY 2010
PD SEP
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 37
IS 17 / L1760
UT 000282009400004
BP 1
EP 5
DI 10.1029/2010GL044771
ID 34176
ER

EF