Browsing Institute's contributions by Author "Bahulayan, N."
Now showing items 1-19 of 19
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A multi-level adaptation model of circulation for the western Indian Ocean
Shaji, C.; Bahulayan, N.; Dube, S.K.; Rao, A.D. (John Wiley, 1999)A three-dimensional, fully non-linear semi-diagnostic (adaptation) model is described. This model is used to compute the climatological mean circulation and to understand the role of local, steady forcing of the wind and ... -
A semi-diagnostic calculation of climatic circulation in the western Indian Ocean
Shaji, C.; Bahulayan, N.; Dube, S.K.; Rao, A.D. (NISCAIR, CSIR, 1997)A 3-dimensional, semi-diagnostic circulation model is used to compute the climatic circulation in the upper levels of western tropical Indian Ocean (20 degrees S-30 degrees N and 35 degrees E-80 degrees E) during the ... -
Biogeochemistry of lead in the eastern Arabian Sea and western Bay of Bengal
Rejomon, G.; DineshKumar, P.K.; Bahulayan, N. (Taylor & Francis, 2010)Biogeochemical cycling of lead (Pb) within the Indian Exclusive Economic Zone of the Arabian Sea and Bay of Bengal was examined in terms of the dissolved and particulate Pb concentration profiles. The relative distribution ... -
Computation of large scale currents in the Arabian Sea during winter using a semi-diagnostic model
Shaji, C.; Bahulayan, N.; Rao, A.D.; Dube, S.K. (Indian National Science Academy, 1997)A 3-dimensional, semi-diagnostic model with 331 levels in the vertical has been used for the computation of climatic circulation in the western tropical Indian Ocean. Model is driven with the seasonal mean data on wind ... -
Determination of vertical velocities in the equatorial part of the western Indian Ocean
Bahulayan, N.; Varadachari, V.V.R. (CSIR-NISCAIR, 1985)Using steady state two-dimensional turbulent diffusion equations of salt and heat some important characteristics of vertical circulation in the equatorial part of the Indian Ocean have been evaluated and discussed. Upwelling ... -
Diagnostic model of 3-D circulation in the Arabian Sea and western equatorial Indian Ocean: Results of monthly mean sea surface topography
Bahulayan, N.; Shaji, C. (Indian National Science Academy, 1996)A three-dimensional diagnostic model has been developed to compute the monthly mean circulation and sea surface topography in the Western Tropical Indian Ocean north of 20 degrees S and west of 80 degrees E. The diagnostic ... -
Dynamics of large scale 3-dimensional circulation of the Indian Ocean
Swapna, P. (2005)One of the main objective of this thesis is to adapt and configure a fully non-linear, primitive equation type, sigma co-ordinate 3-dimensional circulation model for the entire Indian Ocean area which can be run on diagnostic, ... -
Harmonic tidal analysis at a few stations using the least squares method
Fernandes, A.A.; Das, V.K.; Bahulayan, N. (Indian Association for Limnology and Oceanography, 1991)Using the least squares method, harmonic analysis has been performed on hourly water level records of 29 days at several stations depicting different types of non-tidal noise. For a tidal record at Mormugao, which was free ... -
Mathematical modelling of ocean circulation. By G.I. Machuk and A.S. Sarkisyan
Bahulayan, N. (NISCAIR, CSIR, 1990) -
Mixed layer depth and thermocline climatology atlas of the Arabian Sea and Western Indian Ocean
Prasad, T.G.; Bahulayan, N. (1995) -
Mixed layer depth and thermocline climatology of the Arabian Sea and western equatorial Indian Ocean
Prasad, T.G.; Bahulayan, N. (NISCAIR, CSIR, 1996)A band of zonally oriented ridge of mixed layer depth and thermocline base extending from African Coast to the Central Indian Ocean is observed between 5 degrees S and 10 degrees S throughout hte year. Mixed layer depth ... -
Numerical experimentation of a diagnostic model of 3-D circulation in the Arabian Sea
Shaji, C.; Bahulayan, N.; Dube, S.K.; Rao, A.D. (NISCAIR, CSIR, 1997)Climatic circulation in the upper levels of the Arabian Sea and western equatorial Indian Ocean are computed using a 3-dimensional, 33 level diagnostic circulation model. A steady state solution is obtained within 30 days ... -
Numerical model for wind-driven circulation in the Bay of Bengal
Bahulayan, N.; Varadachari, V.V.R. (CSIR-NISCAIR, 1986)Wind-driven circulation in the Bay of Bengal, generated by a southwest wind of constant speed (10 m.sec -1) and direction (225 degrees TN), is presented. A non-linear hydrodynamic model is used for the simulation of ... -
On the semi-diagnostic computation of climatological circulation in the western tropical Indian Ocean
Shaji, C.; Rao, A.D.; Dube, S.K.; Bahulayan, N. (India Meteorological Department, 2000)The seasonal mean climatological circulation in the Indian Ocean north of 20°S and west of 80°E during the summer and winter has been investigated using a 3-dimensional, fully non-linear, semi-diagnostic circulation model. ... -
Sensitivity experiments with an adaptation model of circulation of western tropical Indian Ocean
Bahulayan, N.; Shaji, C.; Rao, A.D.; Dube, S.K. (NISCAIR, CSIR, 1997)One 18-level adaptation model of circulation with a flat bottom at 900 m depth has been used to study the sensitivity of the solution to different magnitudes of eddy viscosity and diffusivity coefficients. Three numerical ... -
Simulation of barotropic wind-driven circulation in tbe Bay of Bengal and Andaman Sea during premonsoon and postmonsoon seasons
Unnikrishnan, A.S.; Bahulayan, N. (NISCAIR, New Delhi, 1991)Two-dimensional vertically integrated model has been used to simulate depth-mean wind-driven circulation during premonsoon and postmonsoon seasons in the upper layers of the Bay of Bengal and Andaman Sea. The model is ... -
Simulation of barotropic wind-driven circulation in the upper layers of Bay of Bengal and Andaman Sea during the southwest and northeast monsoon seasons using observed winds
Bahulayan, N.; Unnikrishnan, A.S. (Indian Academy of Sciences, 1992)A two-dimensional, nonlinear, vertically integrated model was used to simulate depth-mean wind-driven circulation in the upper Ekman layers of the Bay of Bengal and Andaman Sea. The model resolution was one third of a ... -
Storm surge in the Bay of Bengal and Arabian Sea: The problem and its prediction
Dube, S.K.; Rao, A.D.; Sinha, P.C.; Murty, T.S.; Bahulayan, N. (India Meteorological Department, 1997)India and its neighbourhood is threatened by the possibility of storm surge floods whenever a tropical cyclone approaches. Storm surge disasters cause heavy loss of life and property, damage to the coastal structures and ... -
Various approaches to the modelling of large scale 3-dimensional circulation in the Ocean
Shaji, C.; Bahulayan, N.; Rao, A.D.; Dube, S.K. (NISCAIR, CSIR, 1998)In this paper, the three different approaches to the modelling of large scale 3-dimensional flow in the ocean such as the diagnostic, semi-diagnostic (adaptation) and the prognostic are discussed in detail. Three-dimensional ...