FN Archimer Export Format
PT J
TI Changes in the position of the Subtropical Front south of New Zealand since the last glacial period
BT 
AF BOSTOCK, Helen C.
   HAYWARD, Bruce W.
   NEIL, Helen L.
   SABAA, Ashwaq T.
   SCOTT, George H.
AS 1:1;2:2;3:1;4:2;5:3;
FF 1:;2:;3:;4:;5:;
C1 Natl Inst Water & Atmospher Res, Greta Point, New Zealand.
   Geomarine Res, St Johns, New Zealand.
   GNS Sci, Lower Hutt, New Zealand.
C2 NIWA, NEW ZEALAND
   GEOMARINE RES, NEW ZEALAND
   GNS SCI, NEW ZEALAND
IF 3.433
TC 55
UR https://archimer.ifremer.fr/doc/00351/46252/46096.pdf
LA English
DT Article
CR IMAGES 3-IPHIS-MD106
   MD 133 / SEDICAR
BO Marion Dufresne
AB This study fills an important gap in our understanding of past changes in the Southern Subtropical Front (S-STF) in the southwest Pacific Ocean. Paleo-sea surface temperatures (SST) were estimated from planktic foraminiferal census counts from cores straddling the modern S-STF in the Solander Trough, south of New Zealand. The estimated SST were compared for 6 time slices; glacial period (25-21 ka), Last Glacial Maximum (LGM; 21-18 ka), early deglaciation (18-16 ka), late deglacial/early Holocene period (14-8 ka), mid-Holocene period (8-4 ka), and late Holocene period (4-0 ka). The position of the S-STF was determined by two methods: (1) the location of the 10 degrees C isotherm and (2) the location of the highest SST gradients. These new results suggest that the S-STF was not continuous between east and west of New Zealand during the glacial period. Steep SST gradients indicate that a strong S-STF rapidly shifted south during the LGM and early deglaciation. During the late deglacial and Holocene periods the position of the S-STF differs between the two methods with reduced SST gradients, suggesting amore diffuse S-STF in the Solander Trough at this time. The glacial SST data suggest that the S-STF shifted north to the west of New Zealand, while to the east there was a stronger SST gradient across the front. This was possibly the result of an increased wind stress curl, which could have been caused by stronger, or more northerly Southern Hemisphere westerly winds (SHWW), or a merging of the SHWW split jet in this region.
PY 2015
PD JUN
SO Paleoceanography
SN 0883-8305
PU Amer Geophysical Union
VL 30
IS 7
UT 000360058100002
BP 824
EP 844
DI 10.1002/2014PA002652
ID 46252
ER

EF