A5090042488- Marine and coastal ecosystems
- Oceanographic and Atmospheric Processes
- Marine and fisheries research
- Coral and Marine Ecosystems Studies
- Coastal and Marine Dynamics
- Tropical and Extratropical Cyclones Research
- earthquake and tectonic studies
- Ocean Waves and Remote Sensing
- Coastal wetland ecosystem dynamics
- Seismology and Earthquake Studies
- Climate variability and models
- Water Quality Monitoring and Analysis
- Coastal and Marine Management
- Remote-Sensing Image Classification
- Flood Risk Assessment and Management
- Earthquake Detection and Analysis
- Cryospheric studies and observations
- Geological formations and processes
- Arctic and Antarctic ice dynamics
- Water Quality Monitoring Technologies
- Geochemistry and Geologic Mapping
- Identification and Quantification in Food
- Marine and environmental studies
- Oil Spill Detection and Mitigation
- Atmospheric and Environmental Gas Dynamics
Indian Space Research Organisation
2001-2025
National Institute of Advanced Studies
2019-2024
Ministry of Earth Sciences
2010-2020
Indian National Centre for Ocean Information Services
2006-2020
Geological Survey of India
2019
Government of India
2008-2016
United States Congress
2016
Space Applications Services (Belgium)
1983
Coastal areas of Orissa State in the northeastern part Indian peninsula are potentially vulnerable to accelerated erosion hazard. Along 480-km coastline, most coastal areas, including tourist resorts, hotels, fishing villages, and towns, already threatened by recurring storm flood events severe erosion. The habitats, namely largest rookeries world for olive Ridley sea turtles (the extensive sandy beaches Gahirmatha Rushikulya), Asia's brackish water lagoon "Chilika"), mangrove cover...
Abstract Antarctic and Southern Ocean science is vital to understanding natural variability, the processes that govern global change role of humans in Earth climate system. The potential for new knowledge be gained from future substantial. Therefore, international community came together ‘scan horizon’ identify highest priority scientific questions researchers should aspire answer next two decades beyond. Wide consultation was a fundamental principle development collective, view most...
The sequential Suspended Sediment Concentration (SSC) maps were generated using IRS-P4 OCM (Ocean Color Monitor) data for selected tide dominated, wave dominated and deltaic coasts around the Indian subcontinent. Patterns of SSC studied to understand sediment dynamics, circulation patterns, fronts consequent impact on coastal processes. Hitherto, unknown plumes extending large distance into deep offshore areas could be identified from major regions. high temporal capability was extremely...
Chlorophyll‐a concentration (chl a ) maps derived from the Ocean Color Monitor (OCM) on board Indian Remote Sensing Satellite (IRS‐P4) and Seaviewing Wide field of View sensor (SeaWiFS) show increased chl in waters around Sri Lanka during summer monsoon. Physical processes that can lead to phytoplankton bloom are investigated using upper ocean temperature profiles satellite winds, sea surface (SST) level anomalies (SLA). There is attached southern coast accompanied by cool SST, low SLA...
Abstract Artificial water reservoir-triggered earthquakes have continued at Koyna in the Deccan Traps province, India, since impoundment of Shivaji Sagar reservoir 1962. Existing models, to comprehend genesis triggered earthquakes, suffer from lack observations near field. To investigate further, scientific deep drilling and setting up a fault zone observatory depth 5–7 km is planned area. Prior undertaking drilling, an exploratory phase investigations has been launched constrain subsurface...
Abstract Koyna, located in the Deccan Volcanic Province western India, is most significant site of reservoir triggered seismicity (RTS) globally. The largest RTS event M 6.3 occurred here on December 10, 1967. at Koyna has continued. This includes 22 M≥5.0 and thousands smaller events over past 50 years. annual loading unloading cycles Reservoir nearby Warna influence RTS. provides an excellent natural laboratory to comprehend mechanism because earthquakes occur a small area, mostly depths...
The coastal zone is a region where land, ocean and atmosphere interact hence it dynamic in nature. India has long coastline which was not adequately monitored until the advent of satellite remote sensing era 70s. very robust program that Indian Remote Sensing Satellite (IRS) series satellites were effectively used to monitor habitats, landforms, shoreline, water quality, etc., changes identified during last 40 years. classification system for habitats geometric accuracies products...
Abstract A merged image of nadir viewing PAN and LISS III data 2000 stereo 2000–2001 from Indian Remote Sensing satellite (IRS)‐1C covering Gangotri glacier was interpreted to identify its snout or terminus measure the retreat this with respect position in a topographical map 1962. Elevations DEM generated were compared determine thickness ice across section prior year The annual at end ablation season during measured using orthoimages. Acknowledgements authors express their sincere...
Abstract Satellite sensor data analysis, generation of fishery forecast, validation procedure, feedback analysis and results experiments are discussed in this Letter. Indian Remote Sensing (IRS-P4) Ocean Colour Monitor (OCM) derived chlorophyll concentration National Oceanic Atmospheric Administration Advanced Very High Resolution Radiometer (NOAA-AVHRR) sea surface temperature (SST) images were integrated to generate a forecast. The matching SST features selected suggest potential fishing...
The IRS-P4 satellite launched on 26 May 1999 by Indian Space Research Organisation (ISRO) carried an Ocean Colour Monitor (OCM) payload, primarily designed to measure ocean colour, the spectral variations of waterleaving radiance that can be related concentration phytoplankton pigments, coloured dissolved organic matter and suspended particulate matter. Remote sensing data obtained from OCM sensor is processed for removal atmospheric effects Rayleigh aerosol scattering derive normalized...
The East India Coastal Current (EICC) flows equatorward during October–December carrying low salinity water from the Bay of Bengal en route. Using results a high resolution ocean general circulation model, satellite altimeter data, Argo float profiles and color images we show that EICC bifurcates east Sri Lanka. One part continues along coast Lanka but major EICC, called here as Jet (ESLJ) eastward into Bengal. As result this bifurcation, there is offshore transport chlorophyll rich...
Beginning in 2006, the Indian Ocean experienced climatologically anomalous conditions due to large‐scale coupled air‐sea interactions that influenced surface circulation of equatorial Ocean. Here we present evidence from observations as well a general model demonstrate spring Wyrtki jets (WJ) were weak during past 6 years and even reversed westward flow 2008. We note this weakening coincided with uniformly high sea level positive east west gradient anomalies along month May each year,...
Near-synchronous Sea-viewing Wide Field-of-View Sensor (SeaWiFS) derived chlorophyll concentration and National Oceanic Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) sea surface temperature (SST) images were used to understand patterns, persistence inter-relationship between ocean colour thermal features. Different types of oceanic features observed on SST images. An inverse relationship was observed. The in the well defined appeared contained more...
Recent studies of satellite‐derived Chlorophyll concentrations (Chl‐ a ) in the western Arabian Sea (AS) have suggested an increasing temporal trend, but length records used typically been too short to resolve longer‐term trends, if any. Our analysis long term satellite ocean color data shows change trend summer chlorophyll for AS before and after 2003; Chl‐ concentration was indeed till 2003, appears be declining since then, indicating secular multi‐year variability. However, this is not...
A hindcast simulation of storm surge and inundation from tropical cyclone Phalin, which made landfall at Odisha, India, on 12 October 2013, was carried out using ADCIRC model. Model-simulated extent matched well with field surveys Ganjam, within a few days landfall. Further, the model reproduced temporal evolution residual respect to observations tide gauge Paradip (correlation 0.8, RMSE 0.26 m). However, marginally underestimated magnitude observations, can be attributed lack wave setup in...