The series brings early-career researchers and invited experts together for scientific exchange.
ECR talks create opportunities to present research and connect with peers; invited expert talks bring scientific expertise, research journeys, and perspectives from established researchers.
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12 of 12 talks
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Expert talk · No. 12
6 September 2026 · 11:00–12:00 IST
Zircon Detectives: Decoding Source to Sink
Dr. Kumar Batuk Joshi
Central University of Himachal Pradesh, Kangra, India
High-resolution imaging and in situ U–Pb analyses reveal zircon age, internal structure, and geochemistry. This talk examines detrital zircon as a provenance tracer and the limitations of reconstructing source-to-sink relationships.
The Toba Supereruption and Human Prehistory: Current Debates, Challenges, and Future Directions
Dr. Sourav Mukhopadhyay
Captain Williamson Sangma State University, Tura, Meghalaya, India
The ~74 ka Toba supereruption is discussed through geological and archaeological evidence, including debates about the volcanic winter hypothesis, human resilience, methodological challenges, and adaptation.
Evidence from paleoclimate archives is used to examine abrupt events against the background climate of the Holocene, their global impacts, their causes, and mechanisms of propagation.
An introduction to soot, its role in climate and the global carbon cycle, and its characterisation using geochemical and biomolecular tracers, NMR, SEM-EDX, and Raman techniques. Sources discussed include biomass and fossil-fuel burning.
Beyond the smoke: decoding and unravelling biomass burning signatures in environmental archives
Dr. Ankit Yadav
University of Goettingen, Germany
Reliable identification of levoglucosan, mannosan, and galactosan is essential for reconstructing past fires. Targeted mass-spectrometric approaches help separate isomers and improve interpretation of diagnostic ratios and combustion sources.
Illuminating the Past: Applications of OSL Dating in Quaternary Geoscience
Dr. Mahadev Rawat
Borehole Geophysics Research Laboratory, MoES, Karad, Maharashtra
Principles and applications of optically stimulated luminescence dating for sediment chronologies, fluvial dynamics, paleo-floods, and landscape evolution. Indian river examples accompany discussion of uncertainty and methodological challenges.
Southern whispers in the Northern sea: Paleo productivity and Climate linkages in the Bay of Bengal
Dr. Barnita Banerjee
CSIR-NGRI, India
Organic–inorganic geochemistry and micropaleontology from IODP U1446 in the western Bay of Bengal are used to investigate productivity over approximately 1.3 million years, monsoon controls, stratification, and glacial–interglacial variability across the Mid-Pleistocene Transition.
Ocean circulation and Ice sheet controls on Australian Hydroclimate
Dr. Himadri Saini
University of Melbourne, Australia
Earth system model experiments use past climates to examine links between large-scale ocean circulation, polar ice sheets, global climate reorganisation, and regional Australian rainfall.
Measuring Past Ocean Temperature Variability: Techniques and Uncertainties
Dr. Shubham Tripathi
Sophisticated Analytical & Technical Help Institute (SATHI), BHU, India
An overview of paleotemperature proxies, their strengths and limitations, analytical considerations in trace-metal measurement, and eastern Arabian Sea Mg/Ca variability during the Mid-Pleistocene Transition.
Pyrite oxidation in the northwestern Himalayan Rivers: Sulfur and oxygen isotopic evidence for a long-term CO₂ source
Dr. Rakesh Kumar Rout
Ariel University, Ariel, Israel
Stable sulfur and oxygen isotopes of dissolved sulfate are used to investigate pyrite oxidation in northwestern Himalayan river basins. The talk considers sulfuric-acid weathering of carbonates and its implications for long-term carbon cycling.
Centennial-scale intensifications of the Atlantic Meridional Overturning Circulation during Heinrich Stadial 1
Dr. Partha Sarathi Jena
Shantou University, China
Evidence for centennial-scale AMOC intensifications during Heinrich Stadial 1 and their climatic consequences, with particular attention to South American precipitation and atmospheric CO₂ changes.
Abrupt Climatic Events (ACE) of the Holocene Epoch and the Indian Summer Monsoon
Dr. Upasana Banerji
Paleoclimatologist
Natural archives are used to examine Indian Summer Monsoon responses to globally recognised Holocene abrupt climatic events, including 8.2 ka and 4.2 ka events and their regional hydroclimatic expression.