A5008544467- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Coastal wetland ecosystem dynamics
- Isotope Analysis in Ecology
- Coral and Marine Ecosystems Studies
- Groundwater and Isotope Geochemistry
- Marine and fisheries research
- Oceanographic and Atmospheric Processes
- Coastal and Marine Management
- Climate variability and models
- Water Quality and Pollution Assessment
- Marine and coastal plant biology
- Coastal and Marine Dynamics
- Heavy metals in environment
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Tropical and Extratropical Cyclones Research
- Marine and environmental studies
- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Marine Bivalve and Aquaculture Studies
- Animal Nutrition and Physiology
- Groundwater and Watershed Analysis
- Marine Biology and Ecology Research
- Hypothalamic control of reproductive hormones
Pennsylvania State University
2011-2025
Anna University, Chennai
2015-2024
National Centre for Sustainable Coastal Management
2015-2024
Ministry of Environment, Forests and Climate Change
2015-2024
Annamalai University
2009-2024
Central Coastal Agricultural Research Institute
2024
Indian Council of Agricultural Research
2024
Naval Physical & Oceanographic Laboratory
2024
CEPT University
2023
Medical Research Institute
2023
Sediments from Lunkaransar dry lake in northwestern India reveal regional water table and level fluctuations over decades to centuries during the Holocene that are attributed changes southwestern Indian monsoon rains. The levels were very shallow fluctuated often early then rose abruptly around 6300 carbon-14 years before present (14C yr B.P.). completely desiccated 4800 (14)C B.P. end of this 1500-year wet period coincided with a intense dune destabilization. major Harrapan-Indus...
Long-term monitoring of data ambient mercury (Hg) on a global scale to assess its emission, transport, atmospheric chemistry, and deposition processes is vital understanding the impact Hg pollution environment. The Global Mercury Observation System (GMOS) project was funded by European Commission (http://www.gmos.eu) started in November 2010 with overall goal develop coordinated observing system monitor scale, including large network ground-based stations, ad hoc periodic oceanographic...
The Land–ocean Interactions in the Coastal Zone (LOICZ) project was established 1993 as a core of International Geosphere–Biosphere Programme (IGBP) to provide science knowledge answer “How will changes land use, sea level and climate alter coastal systems, what are wider consequences?” In its first phase operation (1993–2003) LOICZ began fundamental investigation focused on biophysical dimensions, including seminal assessments seas net sources or sinks atmospheric CO2, river discharge...
:Coastal wetlands, such as saltmarshes and mangroves, that fringe transitional waters deliver important ecosystem services support human development. Coastal wetlands are complex social-ecological systems occur at all latitudes, from polar regions to the tropics. This overview covers in five continents. The of varying size, catchment population Economic sectors activities around coastal their catchments exert multiple pressures affect state delivery valuable services. All were found be...
Coastal deltas are landforms that typically offer a wide variety of benefits to society including highly fertile soils for agricultural development, freshwater resources, and rich biodiversity. For these reasons, many densely populated, important economic hubs, have been transformed by human interventions such as intensification, modification water sediment fluxes, well urbanization industrialization. Additionally, increasingly affected the consequences climate change sea level rise, other...
A tree-ring δ 18 O chronology of Abies spectabilis from the Nepal Himalaya was established to study hydroclimate in summer monsoon season over past 223 years (ad 1778–2000). Response function analysis with ambient climatic records revealed that primarily controlled by amount precipitation and relative humidity during (June–September). Since simultaneously correlated temperature, drought history reconstructed calibrating against Palmer Drought Severity Index (PDSI). Our reconstruction...
Oxygen isotopic variations in rainfall proxies such as tree rings and cave calcites from South East Asia have been used to reconstruct past monsoon variability, mainly through the amount effect: observed (18)O depletion of rain with increasing amount, manifested a negative correlation monthly tropical its δ(18)O, both measured at same station. This relation exhibits significant spatial some sites (especially North-East peninsular India), are not interpretable by this effect. We show here...
Balanced mechanical properties within the fabric plane and excellent formability have rendered woven glass composite laminates popular in aircraft, automobile, marine civil structures. In practice, while preferring layers fabrication, to achieve required design strength, nominal size of component was increased. This increased total weight component. present work, laminate is strengthened stiffened by interplying high modulus carbon for attaining better specific properties. Two symmetrical...
Abstract. Current understanding of mercury (Hg) behavior in the atmosphere contains significant gaps. Some key characteristics Hg processes, including anthropogenic and geogenic emissions, atmospheric chemistry, air–surface exchange, are still poorly known. This study provides a complex analysis processes governing fate involving both measured data from ground-based sites simulation results chemical transport models. A variety long-term measurements gaseous elemental (GEM) reactive (RM)...
Abstract Microbial degradation has long been recognized as the key rescue mechanism in shaping oil polluted marine environments and role of indigenous populations or their functional genomics have never explored from Indian environments, post an spill event. In current study, high throughput metagenomic analysis, PLFA profiling mass spectrophotometric analysis was performed combination with metabolomics to capture signature variations among microbial communities sediment, water laboratory...
Recent studies have shown that organisms including humans are exposed to microplastics directly or indirectly. The present study aims examine the ingestion of these and consequences same by studying accumulation behavior weathered Polyethylene (wPE) microplastics. Perna viridis were chronically three different environmentally relevant concentrations wPE for 30 days, followed a one-week depuration phase. There was no mortality observed in control groups, but feeding rate substantially...