FN Archimer Export Format
PT J
TI Ocean climate variability in the eastern North Atlantic during interglacial marine isotope stage 11: A partial analogue to the Holocene?
BT 
AF DE ABREU, C
   ABRANTES, FF
   SHACKLETON, NJ
   TZEDAKIS, PC
   MCMANUS, JF
   OPPO, DW
   HALL, MA
AS 1:1,2;2:2;3:1;4:1,3;5:4;6:4;7:1;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Univ Cambridge, Godwin Lab, Cambridge CB2 3SA, England.
   Inst Nacl Engn Tecnol & Inovacao, Dept Geol Marinha, P-2610008 Alfragide, Portugal.
   Univ Leeds, Sch Geog, Earth & Biosphere Inst, Leeds LS2 9JT, W Yorkshire, England.
   Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
C2 UNIV CAMBRIDGE, UK
   INETI, PORTUGAL
   UNIV LEEDS, UK
   WHOI, USA
IF 3.233
TC 73
UR https://archimer.ifremer.fr/doc/00233/34407/32828.pdf
LA English
DT Article
CR IMAGES 1-MD101
   MD 123 / GEOSCIENCES 1
BO Marion Dufresne
DE ;stage 11;interglacials;planktonic foraminifera;stable isotopes;western Iberian margin;eastern North Atlantic
AB Similar orbital geometry and greenhouse gas concentrations during marine isotope stage 11 ( MIS 11) and the Holocene make stage 11 perhaps the best geological analogue period for the natural development of the present interglacial climate. Results of a detailed study of core MD01-2443 from the Iberian margin suggest that sea surface conditions during stage 11 were not significantly different from those observed during the elapsed portion of the Holocene. Peak interglacial conditions during stage 11 lasted nearly 18 kyr, indicating a Holocene unperturbed by human activity might last an additional 6-7 kyr. A comparison of sea surface temperatures ( SST) derived from planktonic foraminifera for all interglacial intervals of the last million years reveals that warm temperatures during peak interglacials MIS 1, 5e, and 11 were higher on the Iberian margin than during substage 7e and most of 9e. The SST results are supported by heavier delta(18)O values, particularly during 7e, indicating colder SSTs and a larger residual ice volume. Benthic delta(13)C results provide evidence of a strong influence of North Atlantic Deep Water at greater depths than present during MIS 11. The progressive ocean climate deterioration into the following glaciation is associated with an increase in local upwelling intensity, interspersed by periodic cold episodes due to ice- rafting events occurring in the North Atlantic.
PY 2005
PD AUG
SO Paleoceanography
SN 0883-8305
PU Amer Geophysical Union
VL 20
IS 3/PA3009
UT 000231729600001
BP 1
EP 15
DI 10.1029/2004PA001091
ID 34407
ER

EF