FN Archimer Export Format
PT J
TI Ventilation and expansion of intermediate and deep waters in the Southeast Pacific during the last termination
BT 
AF Haddam, N. A.
   Michel, E.
   Siani, G.
   Licari, L.
   Dewilde, F.
AS 1:1,2;2:2;3:1;4:3;5:2;
FF 1:;2:;3:;4:;5:;
C1 GEOPS Géosciences Paris‐Sud, CNRS, Université de Paris Sud Paris Saclay Orsay Cedex ,France
   LSCE/IPSL Laboratoire des Sciences du Climat et de l’Environnement, CEA‐CNRS‐UVSQ, Orme des Merisiers Saint‐Aubin, France
   Centre Européen de Recherche de d’Enseignement des Géosciences de l’Environnement, CNRS, Université d’Aix‐Marseille, Europôle Méditerranéen de l’Arbois Aix‐en‐Provence cedex 04, France
C2 UNIV PARIS SUD, FRANCE
   LSCE, FRANCE
   CNRS, FRANCE
IF 3.277
TC 7
UR https://archimer.ifremer.fr/doc/00633/74469/74297.pdf
   https://archimer.ifremer.fr/doc/00633/74469/74298.pdf
   https://archimer.ifremer.fr/doc/00633/74469/74299.xlsx
   https://archimer.ifremer.fr/doc/00633/74469/74300.xlsx
LA English
DT Article
CR MD159 / PACHIDERME
BO Marion Dufresne
AB We investigate the geometry and ventilation of the water masses within bathyal depths (~1500 – ~2500 m) of the Southeast Pacific (SEP), inferring the lower depth limit variations of the Antarctic Intermediate Water (AAIW) since ~22 kyr cal. BP. We use three cores collected at the upper limit of the Pacific Deep Waters, between 41°S and 49°S and one core at a greater depth within this same water mass, at 46°S. The benthic foraminiferal assemblages and carbon and oxygen isotopes are used to show strong linkages between the timing of the deglacial Southern Ocean upwelling events and changes in the vertical extension and ventilation of the AAIW. In accordance with local/sub‐local oxygen reconstructions, we propose at least 3 states of ventilation–AAIW vertical extension; i) the late glacial and the Antarctic Cold Reversal (ACR): AAIW depth‐limit shoals, as its formation zone moves northward, ii) the deglaciation (excluding the ACR): the [O2] enrichment of the AAIW and the dominance of benthic species Trifarina angulosa indicate ventilated AAIW, along with a deepening of its lower limit, iii) the Holocene: enhanced influence of the Pacific Deep Water at bathyal depths (1500‐2500 m) in the SEP north of ~46°S, and the Circumpolar Deep Water south of ~46°S. 
PY 2020
PD JUN
SO Paleoceanography And Paleoclimatology
SN 2572-4517
PU American Geophysical Union (AGU)
VL 35
IS 7
UT 000556646600011
DI 10.1029/2019PA003743
ID 74469
ER

EF