A5078424195- Geology and Paleoclimatology Research
- Geological formations and processes
- Archaeology and ancient environmental studies
- Pleistocene-Era Hominins and Archaeology
- Isotope Analysis in Ecology
- Marine and environmental studies
- Nuclear Physics and Applications
- Tree-ring climate responses
- Radioactivity and Radon Measurements
- Atmospheric and Environmental Gas Dynamics
- Maritime and Coastal Archaeology
- Forensic Anthropology and Bioarchaeology Studies
- earthquake and tectonic studies
- Cryospheric studies and observations
- Atmospheric chemistry and aerosols
- Microwave and Dielectric Measurement Techniques
- Radioactive contamination and transfer
- Pacific and Southeast Asian Studies
- Climate change and permafrost
- Hydrology and Sediment Transport Processes
- Coastal wetland ecosystem dynamics
- Geological and Geochemical Analysis
- Acoustic Wave Resonator Technologies
- Atmospheric Ozone and Climate
- Geochemistry and Geologic Mapping
Inter-University Accelerator Centre
2018-2024
Indian Institute of Technology Delhi
2022-2023
Mangalore University
2023
Dayalbagh Educational Institute
2011-2012
We present a comprehensive record of Holocene (11,590–628 cal. yr BP) climate and hydrographic changes around the Wular Lake located in Kashmir Valley, India. Based on multi-proxy investigations, we have identified three phases wet conditions that prevailed from commencement Epoch – 9000 BP, 8100–6650 BP 6350–5000 whereas periods dry were observed during 9000–8100 6650–6350 ~5000 to 4000 BP. The results also suggested lake widened deepened significantly indicated desiccation exposure margin...
Integrating multiproxy results (geochemistry, mineral magnetism, grain size, and C/N ratio variability supported by 14 C AMS dating), obtained from a 1.4-m sediment core retrieved high-altitude Anchar Lake, Kashmir Valley, NW Himalaya, we present 6000-years record of paleoenvironmental paleolimnological shifts. Phase 1 (6000–4700 cal. yr BP) revealed wetter climate with significant terrestrial input corresponding to the gradual strengthening westerlies. 2 (4700–3900 reflects an overall...
Abstract A better understanding of the organic matter (OM) dynamics is a key to successful wetland management. We established radiocarbon chronology ( 14 C) and vertical distribution nitrogen (N), phosphorus (P), OM, carbon ratio (C/N) in sediment core retrieved from Anchar Wetland, Kashmir Himalaya. The accelerator mass spectrometer (AMS) assisted C dating showed age reversals related occasional disturbances. various fractions revealed increased concentrations (OC), nutrients (N P) upper...
The Central Ganga Basin is one of the most densely populated regions India. It agriculturally diverse and contributes much to Indian economy. region has housed numerous ancient mediaeval empires. This study presents a continuous record paleomonsoon from Chandrika Devi lake, Lucknow district Uttar Pradesh, India which linked with paleo vegetational shifts over last ~6000 years (5871–75 cal yr BP). chronology lake core based on three accelerated mass spectrometry (AMS) radiocarbon two...
ABSTRACT A new facility for radiocarbon dating by accelerator mass spectrometry (AMS) was established in early 2015 at the Inter-University Accelerator Centre New Delhi, India. The uses a 500 kV National Electrostatic Corporation (NEC) Pelletron AMS measurements on graphite produced using automated graphitization equipment (AGE) interfaced with an elemental analyzer and carbonate handling system (CHS). precision of better than 1‰ ratio 14 C/ 12 C modern carbon sample background level 1 × 10...
The establishment, development and abandonment and/or destruction of ancient civilizations were catalytically controlled by geomorphic features such as lakes rivers the climate. This paper examined possible influence tectonism climate on six habitations Vaigai River Basin civilization in South India, using multiple proxies grain size, geochronology geochemistry sedimentary archives. tectonic setting basin changed between active margin passive margin; discriminant diagrams suggested varying...