Browsing Institute's contributions by Title
Now showing items 2617-2636 of 9167
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Drifting and meandering of Olive Ridley Sea turtles in the Bay of Bengal: Role of oceanic Rossby waves
(Taylor & Francis, 2009)Olive Ridley turtles in the Bay of Bengal are previously thought to migrate southward from their nesting ground, along the east coast of India (Orissa coast), towards Sri Lanka. Surprisingly, three of the four Platform ... -
Driving forces of Indian summer monsoon on Milankovitch and sub-Milankovitch time scales: A review
(Geological Society of India, 1998)A scientific consensus exists that tectonic evolution of Himalaya is the main cause of monsoon initiation and evolution in southeast Asia. Several forcing factors such as tectonic, solar insolation, latent heat transport, ... -
Dry-deposition of inorganic and organic nitrogen aerosols to the Arabian Sea: Sources, transport and biogeochemical significance in surface waters
(Elsevier, 2021)Air-to-sea deposition of water-soluble total nitrogen (WSTN) can influence the primary productivity in the coastal oceans. Here, we assessed the concentrations of aerosol inorganic (WSIN: NH4+ + NO3?) and WSTN over the ... -
Duel frequency echo data acquisition system for sea-floor classification
(Allied, India, 2005)An echo data acquisition system is designed to digitize echo signal from a single beam shipboard echo-sounder for use in sea-floor classification studies using a 12 bit analog to digital (A/D) card with a maximum sampling ... -
Duff reaction on phenols: Characterization of non steam volatile products
(Oriental Scientific Publishing Company, Bhopal, 1997)New products having structures 1 and 2 have been characterized in the Duff reaction thymol arid carvacrol. These products have been identified as 2.6'-dithymylmethane 1 and 5.5' -dicarvacryl methane 2 respectively on the ... -
Dune associated calcretes, Rhizoliths and Paleosols from the western continental shelf of India
(Geological Society of India, 1997)The calcareous deposits on the western continental shelf of India, off Bhatkal (water depths 50 to 58 m) occur as crusts, sheets, cylinders and reddish brown mudstones. The outer layers of the crusts are micrite-dominated ... -
Dust depositions leading to phytoplankton blooms in the Arabian sea.
(Solas, 2014)Atmospheric deposition of soil dust is an important source of nutrients (especially iron) to the open ocean regions. Every winter (December to March) the Arabian Sea, the northwest part of the Indian Ocean, receives large ... -
Dust-induced episodic phytoplankton blooms in the Arabian Sea during winter monsoon
(American Geophysical Union, 2014)Phytoplankton blooms mediated by the oceanic supply of nutrients is a well-understood phenomenon in the Arabian Sea (AS), while the role of dust deposition in enhancing phytoplankton is less explored. In this paper, we ... -
Dwarf foraminifera off Kerala, India: A response to mudbank formation
(Palaeontological Society of India, India, 2018)During the monsoon season, a mudbank forms off Alleppey, a coastal district in Kerala. The mudbank forms in the littoral waters within 15 m water depth. It is a small coastal zone with water being unaffected by monsoon ... -
Dynamic loadings of deepwater spar palatform - A case study
(Surathkal: National Inst of Ocean Technology, 2007)Various wave loadings are considered separately on the deepwater Spar platform, with the wave propagation along x-axis and dynamic analyses are carried out at 1150m water depth using Newmark- beta approach The dynamic ... -
Dynamic tidal barrier of Gulf of Kutch and its relevance to the submergence of ancient Dwarka
(Goa: National Institute of Oceanography, 1988) -
Dynamics and diversity of phosphate mineralizing bacteria in the coral reefs of Gulf of Mannar
(WILEY-VCH Verlag GmbH, 2012)Phosphatase Producing Bacteria (PPB) and Inorganic Phosphate Solubilizing Bacteria (IPSB) are important to reef nutrition. These microbes and phosphate concentration play a significant role in the productivity of coral ... -
Dynamics and succession of plankton communities with changing nutrient levels in tropical culture ponds of whiteleg shrimp
(2019)Optimal water quality is a prerequisite for the economic and environmental sustainability of shrimp aquaculture. The dynamics and succession of phytoplankton and microzooplankton assemblages and their interrelationship ... -
Dynamics and thermodynamics of the Indian Ocean warm pool in a high-resolution global general circulation model
(Elsevier, 2005)The time evolution of the Indian Ocean warm pool, studied using a global high-resolution general circulation model, shows strong seasonality. The warm pool has the largest spatial extent during April-May, and least in ... -
Dynamics of amino acids in the conditioning film developed on glass panels immersed in the surface seawaters of Dona Paula Bay
(Taylor and Francis, 2005)The conditioning film developed on glass panels immersed in surface seawater over a period of 24 h was analysed for total organic carbon (OC), total organic nitrogen (ON), and total hydrolyzable amino acid (THAA) concentrations ... -
Dynamics of Andaman Sea circulation and its role in connecting the equatorial Indian Ocean to the Bay of Bengal
(Wiley, 2017)Circulation in the Bay of Bengal (BoB) is driven not only by local winds, but are also strongly forced by the reflection of equatorial Kelvin waves (EKWs) from the eastern boundary of the Indian Ocean. The equatorial ... -
Dynamics of auto- and heterotrophic picoplankton and associated viruses in Lake Geneva.
(European Geosciences Union, 2014)Microbial dynamics have rarely been investigated in Lake Geneva, known as the largest lake in western Europe. From a 5-month survey, we report dynamic patterns of free-living virus, bacteria and small phytoplankton abundances ... -
Dynamics of chromophoric dissolved organic matter in Mandovi and Zuari estuaries — A study through in situ and satellite data
(Elsevier, 2011)The spatial and temporal distribution of absorption of chromophoric dissolved organic matter at 440 nm (a sub (CDOM) (440)) in the Mandovi and Zuari estuaries situated along the west coast of India, has been analysed. The ... -
Dynamics of circulation and salt balance in the upper reaches of Periyar river estuary
(Kerala: State Committee on Science, Technology and Environment, 1987)The Eulerian residual currents of the upper reaches of Periyar estuary (Kerala, India) were directed down the estuary throughout the water column during the monsoon season. During the summer months the residual flow was ...