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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/130/0111

    • Keywords

       

      Kuttanad; swell; tide gauge; river discharge; wave setup.

    • Abstract

       

      The present study describes the active role of met-ocean parameters on the heavy flooding that occurred during July 2018 in the Kuttanad region, Kerala. The model-derived data as well as observations showed a high anomaly of wave height in July 2018 off Kerala was not correlated with local wind anomaly and indicated possible connection of wave anomalies to swell waves. The high period and high amplitude swell waves suggest a wave setup formation near shore for flooding intensification in the Kuttanad region. The wave observation at an open ocean location (AD09) also confirms the presence of high swell waves during the same period. Anomalous elevated non-tidal sea level was evident in the tide gauge data. The narrow opening at Thottappally, is not able to discharge the outflow of the heavy flood water and it is further complicated by the wave setup at the entrance caused by long period swell waves.

    • Author Affiliations

       

      ANURADHA MODI1 2 T M BALAKRISHNAN NAIR1 P G REMYA1 HARIKUMAR R1 SRINIVAS K1 SRINIVAS G3

      1. ESSO-Indian National Centre for Ocean Information Services (Ministry of Earth Sciences, Government of India), Hyderabad 500 090, India.
      2. Kerala University of Fisheries and Ocean Studies (KUFOS), Kochi 682 506, Kerala, India.
      3. LOCEAN-IPSL, Sorbonne Universite (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, Paris, France.

    • Dates

       
      Published
      2 June 2021
      Manuscript received
      12 November 2020
      Manuscript revised
      8 February 2021
      Accepted
      8 February 2021
      Final version published online
      2 June 2021

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