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<p>Investigating tidal characteristics is essential for understanding coastal processes and management. This study focuses on the seasonal and annual tidal dynamics along the southern Odisha coast, emphasizing the interaction between shallow water tides and astronomical tides influenced by meteorological forces and the physical environment. Tidal asymmetry was analyzed using data from multiple tide gauges deployed in coastal waters, with observations covering both SW and NE monsoon periods. Tidal harmonic and spectral analyses revealed a predominantly semidiurnal tidal pattern, with occasional mixed semidiurnal characteristics during the post-monsoon period. Seasonal variations in spectral density highlighted changes in the behavior of principal tidal components. Residual tidal amplitudes were examined with environmental factors such as mean sea level pressure (MSLP), wind speed, and wave height. Validation of simulated tidal heights from the Bay of Bengal (BoB) tide model against observed tidal constituents at Gopalpur Port demonstrated exceptional accuracy. This research provides insights into the latest tidal analysis and modelling approaches, offering valuable applications for coastal management.</p>

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Diurnal and Semidiurnal Tide Analysis and Modelling at the Southern Odisha Coast near Gopalpur, East Coast of India

  • 期刊论文

  • 发表日期：

    2026年3月28日

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  • Umakanta Pradhan,
  • Subhasis Pradhan,
  • Pravakar Mishra,
  • Pratap Kumar Mohanty,
  • Uma Sankar Panda,
  • Rajat Kumar Dalai,
  • Prabin Kumar Kar

摘要

Investigating tidal characteristics is essential for understanding coastal processes and management. This study focuses on the seasonal and annual tidal dynamics along the southern Odisha coast, emphasizing the interaction between shallow water tides and astronomical tides influenced by meteorological forces and the physical environment. Tidal asymmetry was analyzed using data from multiple tide gauges deployed in coastal waters, with observations covering both SW and NE monsoon periods. Tidal harmonic and spectral analyses revealed a predominantly semidiurnal tidal pattern, with occasional mixed semidiurnal characteristics during the post-monsoon period. Seasonal variations in spectral density highlighted changes in the behavior of principal tidal components. Residual tidal amplitudes were examined with environmental factors such as mean sea level pressure (MSLP), wind speed, and wave height. Validation of simulated tidal heights from the Bay of Bengal (BoB) tide model against observed tidal constituents at Gopalpur Port demonstrated exceptional accuracy. This research provides insights into the latest tidal analysis and modelling approaches, offering valuable applications for coastal management.