(Table 1) Age determination of sediment core AAS-62/2 ...

• Main Authors: Kessarkar, Pratima Mohan, Rao, V Purnachadra, Naqvi, Syed Wajih Ahmad, Karapurkar, Supriya G
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Laboratory number; Age, dated; Age, dated standard deviation; Calendar age; Gravity corer; Age, 14C AMS; Age, 14C calibrated, CALIB 5.0.2 Stuiver et al., 2005; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.820875; https://doi.pangaea.de/10.1594/PANGAEA.820875

Variations in the Indian summer monsoon (ISM) intensity during the last 16.7 ka have been studied using organic carbon (Corg), d15N of sedimentary organic matter, CaCO3, sediment texture, d18OC, and Mg/Ca-derived sea surface temperature, d18O of sea water and sea surface salinity, in a 14C-dated sediment core from the eastern Arabian Sea. The d18O in water and planktonic foraminifera shells off the central west coast of India may be controlled by the ISM intensity as this area receives high precipitation and land runoff. Also, the Corg and CaCO3 contents of sediments and d15N of sedimentary organic matter may be linked to ISM-induced productivity and denitrification. The results of the present study reveal that between 16 and 15.2 ka BP, the ISM was weak with minor fluctuations and started intensifying around 15.2 ka BP, at the onset of the Bølling-Ållerød (B-A) event. The B-A event is characterized by higher water column denitrification rates comparable to the present day. The ISM signatures observed in the ... : Measured on Globigerinoides ruber. ...