Now showing items 1-20 of 31

    • Analysis of wave directional spreading using neural networks 

      Deo, M.C.; Gondane, D.S.; SanilKumar, V. (ASCE, 2002)
      The short-term directional spreading of wave energy at a given location is popularly modeled with the help of the Cosine Power model. This model is oriented mainly around value of the spreading parameter involved in its ...
    • Characteristics of waves off Goa, west coast of India 

      SanilKumar, V.; AshokKumar, K.; Anand, N.M. (Coastal Research Foundation, 2000)
      Directional wave measurements were carried out using Datawell directional waverider buoy off Goa along west coast of India during the south west monsoon period in 1996 and the results are presented. Theoretical joint ...
    • Design wave estimation considering directional distribution of waves 

      SanilKumar, V.; Deo, M.C. (Elsevier, 2004)
      The design of coastal and offshore structures requires design significant wave height having a certain return period. The commonly followed procedure to estimate the design wave height, does not give any consideration to ...
    • Directional wave measurements off Navinal, Gulf of Kachchh, India 

      Vethamony, P.; KrishnaKumar, V.; Suryanarayana, A.; Antony, M.K.; Swamy, G.N. (Brazilian Water Resources Association, Brazil, 1995)
      Results of directional wave measurements carried out off Navinal, Gulf of Kachchh representing pre-monsoon and southwest monsoon wave conditions are presented. Maximum wave height encountered during pre-monsoon and southwest ...
    • Directional waverider buoy in Indian waters - Experiences of NIO 

      AshokKumar, K.; Diwan, S.G. (Allied, Chennai (India), 1996)
      Information on directional waves is extremely important in the design of harbour structures, such as breakwaters and jetties and to study the sediment transport pattern. Till recent days our country has been using waverider ...
    • Estimation of sea surface wave height from Bhaskara II SAMIR data 

      Rao, M.V.; Viswambharan, N.K.; Rao, L.V.G. (CSIR-NISCAIR, 1984)
      Brightness temperature data from satellite microwave radiometer (SAMIR) onboard Bhaskara 2 have been analysed for 15 orbits over the North Indian Ocean during January-June 1982 for which seatruth data on surface waves ...
    • Estimation of wave directional spreading 

      Deo, M.C.; Gondane, D.S.; SanilKumar, V. (American Society of Civil Engineers, Virginia, USA, 2001)
      One of the useful measures of waves directional spreading at a given location is the directional spreading parameter. This paper presents a new approach to arrive at its characteristic value using the computational technique ...
    • Estimation of wind speed and wave height during cyclones 

      SanilKumar, V.; Mandal, S.; AshokKumar, K. (Elsevier, 2003)
      Wave and wind characteristics based on the cyclones, in the vicinity of the Nagapattinam coastline (east coast of India) were estimated. In all, 11 cyclones have crossed near the study region during 1960-1996. For the four ...
    • Evaluation of stress resultant of offshore jacket platform using neural network 

      Mandal, S.; Hegde, G.; Gupta, K.G. (College of Civil Engineering, Pune; India, 2004)
      The safety of an offshore platform depends on the predicting environmental phenomena such as wind, current, wave, seismic loadings and accurate calculation of responses of the structure to these loads and determining the ...
    • Geosat altimeter derived sea surface wind speeds and significant wave heights for the north Indian Ocean and their comparison with in situ data 

      Vethamony, P.; Vaithiyanathan, R.; Almeida, A.M.; Santanam, K.; Rao, L.V.G.; Sarkar, A.; Kumar, R.; Gairola, R.M.; Gohil, B.S. (Publ. and Inf. Dir., New Delhi, India, 1994)
      Geosat altimeter data for the period November 1986-October 1987 over the north Indian Ocean have been processed to retrieve wind speeds and significant wave heights. Smoothed Brown algorithm is used to retrieve wind speeds ...
    • Hindcasting cyclonic waves using neural networks 

      Mandal, S.; Rao, S.; Chakravarty, N.V. (KREC, Surathkal, 2002)
      Cyclone generated waves play a significant role in the design of coastal and offshore structures. Instead of conventional numerical models, neural network approach is used in the present study to estimate the wave parameters ...
    • Interannual and seasonal variations in nearshore wave characteristics off Honnavar, west coast of India 

      Sanjiv, P.C.; SanilKumar, V.; Johnson, G.; Dora, G.U.; Vinayaraj, P. (Current Science Association, 2012)
      Interannual and seasonal variations in nearshore surface wave parameters over a period of three years (March 2008 - March 2011) were examined based on the measured wave data at 9 m water depth off Honnavar, west coast of ...
    • Modification of wind-wave model WAM and its verification against buoy data in the Indian Ocean 

      Polnikov, V.G.; Samiksha, S.V.; Rashmi, R.; Pogarskii, F.; Sudheesh, K.; Vethamony, P. (IIT Bombay, 2012)
      An attempt is made to improve the accuracy of wave prediction in the Indian Ocean. For this purpose, two versions of the wave model WAM have been used: WAM (Cycle 4) and the new version of WAM, called NewWAM. The three ...
    • Recent studies on wind seas and swells in the Indian Ocean 

      Vethamony, P.; Rashmi, R.; Samiksha, S.V.; Aboobacker, V.M. (IIT Bombay, 2012)
      Winds and waves measured at a few locations along the west coast of India were analysed to study the wave characteristics in the deep as well as near shore regions during different seasons. The potential generation of ...
    • Recurrent networks for wave forecasting 

      Mandal, S.; Prabaharan, N. (IIT, Bombay, 2002)
      The tremendous increase in offshore operational activities demands improved wave forecasting techniques. With the knowledge of accurate wave conditions, it is possible to carry out the marine activities such as offshore ...
    • Seasonal wave characteristics of the Arabian Sea and the Bay of Bengal 

      Vijayarajan, P.K.; Varkey, M.J.; Joseph, M.X. (Marine Biological Association of India, 1976)
      Wave data reported in the Indian Daily Weather Reports for the period 1960-64 have been used to evaluate seasonal wave characteristics for each 2-degree square areas of the Arabian Sea and the Bay of Bengal. These results ...
    • Spectral characteristics of high shallow water waves 

      SanilKumar, V.; AshokKumar, K. (Elsevier, 2008)
      The spectral characteristics of shallow water waves with significant wave height more than 2m based on the data collected along the Indian coast are examined. It was found that the value of Joint North Sea Wave Project ...
    • Statistical analysis on extreme wave height 

      Teena, N.V.; SanilKumar, V.; Sudheesh, K.; Sajeev, R. (Springer, 2012)
      The classical extreme value theory based on generalized extreme value (GEV) distribution and generalized Pareto distribution (GPD) is applied to the wave height estimate based on wave hindcast data covering a period of 31 ...
    • Temporal variations in the wind and wave climate at a location in the eastern Arabian Sea based on ERA-Interim reanalysis data. 

      Shanas, P.R.; SanilKumar, V. (European Geosciences Union, 2014)
      Temporal variations in wind speed and significant wave height (SWH) at a location in the eastern Arabian Sea are studied using ERA-Interim reanalysis data from 1979 to 2012. A shallow water location is selected for the ...
    • Variability in wave refraction and resultant nearshore current patterns: Exposed versus sheltered beaches along north Karnataka, west coast of India 

      Veerayya, M.; Pankajakshan, T. (CSIR-NISCAIR, 1988)
      For predominant waves approaching from directions varying between SW and WNW and periods varying from 6 to 11 sec, the refraction function (Kd) shows amplification of wave heights resulting in concentration of wave energy ...