Wind Strength Variability in the Western Arabian Sea since the Last Glacial Maximum: Southwest vs. Northeast Monsoon Modes

Singh, Ashutosh K.; Tiwari, Manish; Srivastava, Ankush; Sinha, D. K.; Ramesh, R.

doi:10.3233/jcc-160017

Cited by 6 publications

(4 citation statements)

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“…Several researchers have used planktic foraminifera from the AS and reconstructed the Indian palaeomonsoon (e.g. Sirocko et al, 1993;Overpeck et al, 1996;Naidu and Malmgren, 1996;Sarkar et al, 2000;Gupta et al, 2003;Anand et al, 2008;Ramesh et al, 2010;Singh et al, 2010;Tiwari et al,2005Tiwari et al, , 2010Govil and Naidu, 2010;Naidu et al,1999Naidu et al, , 2011Saraswat et al, 2013;Partin et al, 2015;Singh et al, 2016). Similarly, a few studies on foraminiferal species from the BoB and AnS have also been carried out to reconstruct the monsoon system (Cullen, 1981;Naidu et al, 1999;Kudrass et al, 2001;Rashid et al, 2007Rashid et al, , 2011Govil and Naidu, 2011;Ahmad et al, 2012;Raza et al, 2014;Sijinkumar et al, 2016;Gebregiorgis et al, 2016;Da Silva et al, 2017;Kumar et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Indian monsoon variability during the last 46 kyr: isotopic records of planktic foraminifera from southwestern Bay of Bengal

Gautam

Narayana

Kumar

et al. 2020

J Quaternary Science

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The Indian monsoon carries large amounts of freshwater to the northern Indian Ocean and modulates the upper ocean structure in terms of upwelling and productivity. Freshwater‐induced stratification in the upper ocean of the Bay of Bengal is linked to the changes in the Indian monsoon. In this study, we test the usefulness of δ18O and δ13C variability records for Globigerina bulloides and Orbulina universa to infer Indian monsoon variability from a sediment core retrieved from the southwestern Bay of Bengal encompassing the last 46 kyr record. Results show that the northeast monsoon was dominant during the Last Glacial Maximum. Remarkable signatures are observed in the δ18O and δ13C records during the Marine Isotope Stage (MIS) 3 to MIS‐1. Our study suggests that Indian monsoon variability is controlled by a complex of factors such as solar insolation, North Atlantic climatic shifts, and coupled ocean–atmospheric variability during the last 46 kyr.

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Section: Introductionmentioning

confidence: 99%

“…The study on relative differences in the isotopic signatures from different habitats within upper ocean water provides clues to the past changes in its stratification (e.g. Singh et al ., 2016; Kumar et al ., 2018).…”

Section: Introductionmentioning

confidence: 99%

Indian monsoon variability during the last 46 kyr: isotopic records of planktic foraminifera from southwestern Bay of Bengal

Gautam

Narayana

Kumar

et al. 2020

J Quaternary Science

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“…In that context, it is notable that several studies report occasional short-term SWM reinforcement during the glacial period (30-15 ka). In these studies, decline of the NEM winds and/or intensification of the SWM winds in the (discussed) glacial period is documented by relatively high marine productivity and increased upwelling in NWArS (Naidu and Malmgren, 1996;Schulz et al, 2002;Singh et al, 2016).…”

Section: The Sss Recordmentioning

confidence: 99%

“…Previous studies have employed planktic foraminifera associations for reconstructing past monsoon dynamics in the Arabian Sea (Anderson and Prell, 1991;Naidu and Malmgren, 1996;Cayre et al, 1999;Almogi-Labin et al, 2000;Schulz et al, 2002;Ivanova et al, 2003;Ishikawa and Oda, 2007;Caley et al, 2011;Singh et al, 2011Singh et al, , 2016. A key observation of these studies is the increased abundance of Globigerina bulloides (followed by Globigerinita glutinata and neogloboquadrinids), indicating increased upwelling and elevated productivity levels likely caused by enhanced SWM.…”

Section: Introductionmentioning

confidence: 99%

Influences of sea level changes and the South Asian Monsoon on southern Red Sea oceanography over the last 30 ka

et al. 2022

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The southern Red Sea is a key region for investigating the effect of climate forces on a semi-closed basin. Detailed micropaleontological (planktic foraminifera) and isotopic (δ18Ο, δ13C) analyses along with reconstructions of sea surface temperature and salinity on a sediment core from the Farasan banks revealed the imprints of sea level changes and the South Asian Monsoon on the area. Comparison with surrounding records provided insights on the Red Sea-Gulf of Aden (GoA)-Northwestern Arabian Sea (NWArS) water exchange pattern over the last 30 ka. During glacial sea-level lowstand, flow of water from the GoA prevented hypersalinity in the southern Red Sea. Deglacial sea level rise improved water mass exchange between the NWArS, GoA and the entire Red Sea, resulting in relatively similar surface water conditions during the early Holocene when sea-level rise slowed. Thus, sea level change is the major driver of Red Sea δ18O variability. Southwest Monsoon (SWM), which was dominant during the late glacial and Early–Middle Holocene, enhanced surface productivity in the southern Red Sea. Northeast Monsoon (NEM) dominated around Heinrich stadial 1, as indicated by a nearly aplanktonic zone that was probably caused by restricted GoA inflow and low productivity.

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A synthesis of paleomonsoon and associated processes from the unique depocenter, Andaman Sea

Fathima,

Saraswat

2023

Geo-Mar Lett

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Wind Strength Variability in the Western Arabian Sea since the Last Glacial Maximum: Southwest vs. Northeast Monsoon Modes

Cited by 6 publications

References 0 publications

Indian monsoon variability during the last 46 kyr: isotopic records of planktic foraminifera from southwestern Bay of Bengal

Indian monsoon variability during the last 46 kyr: isotopic records of planktic foraminifera from southwestern Bay of Bengal

Influences of sea level changes and the South Asian Monsoon on southern Red Sea oceanography over the last 30 ka

A synthesis of paleomonsoon and associated processes from the unique depocenter, Andaman Sea

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