Now showing items 1-20 of 83

    • A finite element simulation of tidal circulation in the Gulf of Kutch, India 

      Unnikrishnan, A.S.; Luick, J.L. (Elsevier, 2003)
      A finite element (fe) model using the software package ADCTRC was developed to simulate the tides and currents in the Gulf of Kutch, located on the northwest coast of India. The surface elevations from the model were ...
    • A roadmap to IndOOS-2: Better observations of the rapidly-warming Indian Ocean 

      Beal, L.M.; Vialard, J.; Roxy, M.K.; Li, J.; Andres, M.; Annamalai, H.; Feng, M.; Han, W.; Hood, R.; Lee, T.; Lengaigne, M.; Lumpkin, R.; Masumoto, Y.; McPhaden, M.J.; Ravichandran, M.; Shinoda, T.; Sloyan, B.M.; Strutton, P.G.; Subramanian, A.C.; Tozuka, T.; Ummenhofer, C.C.; Unnikrishnan, A.S.; Wiggert, J.; Yu, L.; Cheng, L.; Desbruyeres, D.G.; Parvathi, V. (American Meteorological Society, 2020)
      The Indian Ocean Observing System (IndOOS), established in 2006, is a multinational network of sustained oceanic measurements that underpin understanding and forecasting of weather and climate for the Indian Ocean region ...
    • A sustained ocean observing system in the indian ocean for climate related scientific knowledge and societal needs 

      Hermes, J.C.; Masumoto, Y.; Beal, L.M.; Roxy, M.K.; Vialard, J.; Andres, M.; Annamalai, H.; Behera, S.; DeAdamo, N.; Doi, T.; Feng, M.; Han, W.; Hardman-Mountford, N.; Hendon, H.; Hood, R.; Kido, S.; Lee, C.; Lee, T.; Lengaigne, M.; Li, J.; Lumpkin, R.; Navaneeth, K.N.; Milligan, B.; McPhaden, M.J.; Ravichandran, M.; Shinoda, T.; Singh, A.; Sloyan, B.; Strutton, P.G.; Subramanian, A.C.; Thurston, S.; Tozuka, T.; Ummenhofer, C.C.; Unnikrishnan, A.S.; Venkatesan, R.; Wang, D.; Wiggert, J.; Yu, L.; Yu, W. (2019)
      The Indian Ocean is warming faster than any of the global oceans and its climate is uniquely driven by the presence of a landmass at low latitudes, which causes monsoonal winds and reversing currents. The food, water, and ...
    • Analysis of extreme sea level along the east coast of India 

      Unnikrishnan, A.S.; Sundar, D.; Blackman, D. (American Geophysical Union, 2004)
      Hourly tide gauge data were analyzed for extreme sea level for three stations, Paradip, Vishakhapatnam, and Chennai, along the east coast of India. These stations are tidally dominant, with the magnitudes of tides exceeding ...
    • Anomalous circulation in the eastern equatorial Indian Ocean during southwest monsoon of 1994 

      Unnikrishnan, A.S.; Murty, V.S.N.; Babu, M.T.; Gopinathan, C.K.; Charyulu, R.J.K. (NIO, Dona Paula, Goa (India), 2000)
      Geostrophic circulation derived from hydrographic data collected during July-August, 1994 along 80, 84 and 88E between 5N and 3S latitudinal belt in the eastern equatorial Indian Ocean is presented. A broad westward flow ...
    • Anomalous current structure in the eastern equatorial Indian Indian Ocean during the south-west monsoon of 1994 

      Unnikrishnan, A.S.; Murty, V.S.N.; Babu, M.T.; Gopinathan, C.K.; Charyulu, R.J.K. (CSIRO, Australia, 2001)
      Analysis of hydrographic data collected along 80 degrees, 84 degrees and 88 degrees E between 5 degrees N and 3 degrees S during peak south-west monsoon (July-August) of the eastern equatorial Indian Ocean (EEIO) reveals ...
    • Are sea-level-rise trends along the coasts of the north Indian Ocean consistent with global estimates? 

      Unnikrishnan, A.S.; Shankar, D. (Elsevier, 2007)
      Mean-sea-level data from coastal tide gauges in the north Indian Ocean wereare used to show that low-frequency variability is consistent among the stations in the basin. Statistically significant trends obtained from records ...
    • Assessment of impacts and vulnerability to India's coastline due to climate change 

      Unnikrishnan, A.S. (Current Science Association, 2011)
      India’s recently concluded second National Communications Project, co-ordinated by the MoEF involved participation of about 130 institutions spread over the country. A summary of these reports are expected to be prepared ...
    • Barotropic tidal model for the Bombay High, Gulf of Khambhat and surrounding areas 

      Unnikrishnan, A.S.; Shetye, S.R.; Michael, G.S. (Naval Physical and Oceanographic Laboratory, Thrikkakara, Kochi, India, 1998)
      A barotropic model is developed for the shelf region off the central west coast of India, which includes the regions of Bombay High and Gulf of Khambhat, in order to simulate tides and tidal currents in the region. The ...
    • Characteristics of Tides in the Bay of Bengal 

      Sindhu, B.; Unnikrishnan, A.S. (Taylor and Francis, 2013)
      A vertically integrated 2D numerical model was developed for the simulation of major tidal constituents (M2, S2, N2, K1 and O1) in the Bay of Bengal. The bathymetry for the model domain was derived from an improved ETOPO5 ...
    • Decadal and long-term sea level variability in the tropical Indo-Pacific Ocean 

      Nidheesh, A.G.; Lengaigne, M.; Vialard, J.; Unnikrishnan, A.S.; Dayan, H. (Springer, 2013)
      Decadal and long-term steric sea level variations over 1966-2007 period in the Indo-Pacific sector were analysed using an ocean general circulation model forced by reanalysis winds. The simulated steric sea level compares ...
    • Demarcation of coastal vulnerability line along the Indian coast 

      Ajai; Baba, M.; Unnikrishnan, A.S.; Rajawat, A.S.; Bhattacharya, S.; Ratheesh, R.; Kurian, N.P.; Hameed, S.; Sundar, D. (Indian Society of Geomatics, 2013)
      Delineation of vulnerability line for coastal region due to dynamic coastal processes and natural coastal hazards is a complex task due to high regional variability and site specific coastal characteristics. A methodology ...
    • Diffusion characteristics of the Kakinada Bay for effluent assessment 

      Unnikrishnan, A.S.; Asthana, V. (Indian Academy of Sciences, Bangalore, 1989)
      The present study reports the determination of diffusion characteristics of the Kakinada Bay to choose a suitable marine outfall location for industrial discharge of effluents from a proposed fertilizer plant. The study ...
    • Evolution of extreme high waters along the east coast of India and at the head of the Bay of Bengal 

      Antony, C.; Unnikrishnan, A.S.; Woodworth, P.L. (Elsevier, 2016)
      The recent evolution of extreme high waters along the severe cyclone-risk coasts of the Bay of Bengal (the east coast of India and Bangladesh) was assessed using long-term (24–34 years) hourly tide gauge data available ...
    • Extreme sea level variability along the coast of India. Vol. 1-2 

      Unnikrishnan, A.S.; Shetye, S.R.; Shankar, D.; Sundar, D.; Michael, G.S.; Fernandes, S.E.; Telang, M. (National Institute of Oceanography, India, 2004)
      Hourly tide gauge data of 15 years duration were used to estimate the return periods of extreme sea level events (storm surges) along the Indian coasts. The impacts of cyclones and storm surges in the coastal regions of ...
    • Extreme sea-level events in coastal regions 

      Unnikrishnan, A.S. (Current Science Association, 2012)
      Underlines the need for documentation of the adaptation practices from previous extreme events for handling future exigencies in the coastal regions.
    • Generation, propagation and dissipation of internal tides on the continental shelf and slope off the west coast of India 

      Subeesh, M.P.; Unnikrishnan, A.S.; Francis, P.A. (Elsevier Ltd, 2021)
      The present study focuses on the dynamics of M2 internal tides on the shelf and slope off the west coast of India (WCI) using a high-resolution (1/48�) numerical ocean circulation model configured for the eastern Arabian ...
    • High-resolution Operational Ocean Forecast and reanalysis System for the Indian Ocean 

      Francis, P.A.; Jithin, A.K.; Effy, J.B.; Chatterjee, Abhisek; Chakraborty, Kunal; Paul, A.; Balaji, B.; Shenoi, S.S.C.; Biswamoy, P.; Mukherjee, Arnab; Singh, Prerna; Deepsankar, B.; Reddy, S.S.; Vinayachandran, P.N.; GirishKumar, M.S.; Bhaskar, T.V.S.U.; Ravichandran, M.; Unnikrishnan, A.S.; Shankar, D.; Amol, P.; Aparna, S.G.; Harikumar, R.; Kaviyazhaku, K.; Suprit, K.; Shesu, R.V.; KiranKumar, N.; Rao, N.S.; Annapurnaiah, K.; Venkatesan, R.; Rao, A.S.; Rajagopal, E.N.; Prasad, V.S.; Gupta, M.D.; Nair, T.M.B.; Rao, E.P.R.; Satyanarayana, B.V. (American Meteorological Society, 2020)
      A good understanding of the general circulation features of the oceans, particularly of the coastal waters, and ability to predict the key oceanographic parameters with good accuracy and sufficient lead time are necessary ...
    • Historical review and description of terms 

      Unnikrishnan, A.S. (NIO, Goa, 1991)
    • Hydrography and biogeochemistry of the coastal ocean 

      Naqvi, S.W.A.; Unnikrishnan, A.S. (American Geophysical Union, 2009)
      The coastal ocean accounts for only 7% of the total oceanic area, but it plays a very important role in biogeochemical cycles. It not only exchanges energy and matter with the open ocean, but terrestrial inputs of materials ...