Evolution of the Tropical Indian Ocean and Indian Monsoon through the Mid-Pleistocene Transition

Marine sediments of Site U1443 from International Ocean Discovery Program (IODP) Expedition 353 in the southernmost Bay of Bengal are utilized in my PhD project to reconstruct the evolution of the Indian Monsoon through the Mid-Pleistocene Transition (MPT). The project focuses on stable carbon and oxygen isotopes, and trace-element analyses on planktonic and benthic foraminifera, which document sea surface and deep ocean hydrographic conditions. Past changes in Indian summer and winter monsoon circulations will be revealed from these records, and both the external and internal forcing mechanisms that control the Indian Monsoon and tropical Indian Ocean climate during the MPT will be discussed. This talk summarizes the work from May 2018 to October 2019, and provides the basis and discussion directions for my thesis.