SST Changes in the Indian Sector of the Southern Ocean and their teleconnection with the Indian Monsoon during the Last Glacial Period

2021 ◽  
Author(s):  
Vikash Kumar ◽  
Manish Tiwari ◽  
Prince Prakash ◽  
Rahul Mohan ◽  
Meloth Thamban
Keyword(s):  
Southern Ocean ◽  
Indian Monsoon ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Last Glacial ◽  
Indian Sector ◽  
The Last Glacial

scholarly journals Fluctuation of Indian monsoon during the last glacial period revealed by pollen analysis of Kathmandu Basin sediments, Nepal Himalaya

2008 ◽  
Vol 2 (4) ◽  
pp. 133-134 ◽  
Author(s):  
Rie Fujii ◽  
Harutaka Sakai ◽  
Norio Miyoshi
Keyword(s):  
Pollen Analysis ◽  
Indian Monsoon ◽  
Glacial Period ◽  
Special Issue ◽  
Last Glacial Period ◽  
Nepal Himalaya ◽  
Last Glacial ◽  
The Last Glacial

Himalayan Journal of Sciences Vol.2(4) Special Issue 2004 pp. 133-4

scholarly journals Greater supply of Patagonian-sourced detritus and transport by the ACC to the Atlantic sector of the Southern Ocean during the last glacial period

2012 ◽  
Vol 317-318 ◽  
pp. 374-385 ◽  
Author(s):  
Taryn L. Noble ◽  
Alexander M. Piotrowski ◽  
Laura F. Robinson ◽  
Jerry F. McManus ◽  
Claus-Dieter Hillenbrand ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Atlantic Sector ◽  
Last Glacial ◽  
The Last Glacial

Southern Patagonian glacial chronology for the Last Glacial period and implications for Southern Ocean climate

2008 ◽  
Vol 27 (3-4) ◽  
pp. 284-294 ◽  
Author(s):  
M.R. Kaplan ◽  
C.J. Fogwill ◽  
D.E. Sugden ◽  
N.R.J. Hulton ◽  
P.W. Kubik ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Ocean Climate ◽  
Last Glacial ◽  
Glacial Chronology ◽  
The Last Glacial

Contribution of Southern Ocean surface-water stratification to low atmospheric CO2 concentrations during the last glacial period

Nature ◽  
10.1038/40073 ◽  
1997 ◽  
Vol 389 (6654) ◽  
pp. 929-935 ◽  
Author(s):  
Roger François ◽  
Mark A. Altabet ◽  
Ein-Fen Yu ◽  
Daniel M. Sigman ◽  
Michael P. Bacon ◽  
...  
Keyword(s):  
Surface Water ◽  
Southern Ocean ◽  
Ocean Surface ◽  
Atmospheric Co2 ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Last Glacial ◽  
Water Stratification ◽  
Atmospheric Co2 Concentrations ◽  
The Last Glacial

scholarly journals Glacial δ<sup>13</sup>C decreases in the western South Atlantic forced by millennial changes in Southern Ocean ventilation

2016 ◽  
Author(s):  
Marília C. Campos ◽  
Cristiano M. Chiessi ◽  
Ines Voigt ◽  
Alberto R. Piola ◽  
Henning Kuhnert ◽  
...  
Keyword(s):  
Climate Change ◽  
Southern Ocean ◽  
South Atlantic ◽  
Meridional Overturning Circulation ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Last Glacial ◽  
Change Events ◽  
The Last Glacial ◽  
Millennial Scale

Abstract. Abrupt millennial–scale climate change events of the last deglaciation (i.e., Heinrich Stadial 1 and the Younger Dryas) were accompanied by marked increases in atmospheric CO2 presumably originated by outgassing from the Southern Ocean. However, information on the preceding Heinrich Stadials during the last glacial period is scarce. Here we present stable carbon isotopic data (δ13C) from two species of planktonic foraminifera from the western South Atlantic that reveal major decreases (up to 1 ‰) during Heinrich Stadials 3 and 2. These δ13C decreases are most likely related to millennial–scale periods of intensification in Southern Ocean deep water ventilation presumably associated with a weak Atlantic meridional overturning circulation. After reaching the upper water column of the Southern Ocean, the δ13C depletion would be transferred equatorward via central and thermocline waters. Together with other lines of evidence, our data are consistent with the hypothesis that the CO2 added to the atmosphere during abrupt millennial–scale climate change events during the last glacial period also originated in the ocean and reached the atmosphere by outgassing from the Southern Ocean. The temporal evolution of δ13C during Heinrich Stadials in our records is characterized by two relative minima separated by a relative maximum. This “w–structure” is also found in North Atlantic and South American records, giving us confidence that such structure is a pervasive feature of Heinrich Stadial 2 and, possibly, also Heinrich Stadial 3.

Fragilariopsis kerguelensis size variability from the Indian subtropical Southern Ocean over the last 42 000 years

2016 ◽  
Vol 29 (2) ◽  
pp. 139-146 ◽  
Author(s):  
Sunil Kumar Shukla ◽  
Xavier Crosta
Keyword(s):  
Southern Ocean ◽  
Sea Ice ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Subtropical Zone ◽  
The Holocene ◽  
Last Glacial ◽  
Size Variability ◽  
The Last Glacial ◽  
Valve Area

AbstractIn the open Southern Ocean (SO), both modern and past size changes of the diatom Fragilariopsis kerguelensis appear to be strongly controlled by iron availability. Conversely, sea surface temperatures (SST) and sea ice seasonal dynamics take over in the seasonal sea-ice zone where iron is not limiting. No information exists on F. kerguelensis biometry from the subtropical SO, on the other extreme of the thermal and nutrient gradients. We present here new data on mean valve area of F. kerguelensis (FkergArea) from a sediment core covering the last ~42 cal kyrs from the southern Subtropical Front (SSTF) of the Indian sector of the SO, where iron and silica stocks are thought to have been consistently low over this period. Our results suggest that larger F. kerguelensis valves occurred during the Last Glacial period, and declined during the Holocene period. These findings indicate that more favourable SST, within the F. kerguelensis ecological range, during the Last Glacial period may have enabled F. kerguelensis to make better use of the low silica stocks prevailing in the subtropical zone leading to larger valves. Conversely, declining FkergArea during the deglacial and the Holocene periods may have been a result of higher SST which hampered the utilization of silica.

scholarly journals Post-depositional manganese mobilization during the last glacial period in sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean

2020 ◽  
Vol 532 ◽  
pp. 116012 ◽  
Author(s):  
Jessica B. Volz ◽  
Bo Liu ◽  
Male Köster ◽  
Susann Henkel ◽  
Andrea Koschinsky ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Last Glacial ◽  
The Last Glacial
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