In recent years, the frequency of occurrences of cyclones and duration of cyclones in the North Indian Ocean is increased due to climate change. The predictions of extreme weather events are important for proper planning of disaster management to save the human lives and to protect the coastal infrastructure. Consideration of surge level in the estimation of design elevation of various major coastal infrastructure like breakwaters, jetties, intake structures, power plants, ports and harbours will prevent damages during extreme events. Tropical Cyclone Biparjoy originated in the Arabian Sea as a Depression and intensified into a Very Severe Cyclonic Storm within a period of two days. This further intensified into an Extremely Severe Cyclonic Storm by June 11,2023. Biparjoy later subsided into a Very Severe Cyclonic Storm Off the Coast of Gujarat and continued to traverse off the Gujarat coast for nearly 3 days until it made landfall as a Very Severe Cyclonic Storm near 23.1 N and 68.3 E about 30 km South of Jakhau Port, 110 km Northwest of Dwarka. A numerical model was setup to estimate the tropical storm induced surge due to Tropical Cyclone Biparjoy. The observed Cyclone data from IMD and Joint Typhoon Warning Centre were used as input. Cyclone Biparjoy resulted in inundation of low-lying areas of coastal districts of Gujarat.

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Estimation of Storm Surge Due to Tropical Cyclone Biparjoy Using Numerical Models

  • Aruna Kumar Avula,
  • Abhishek Tavva,
  • Shyamala Varthini Dinakaran,
  • Purnima Jalihal,
  • B. K. Jena

摘要

In recent years, the frequency of occurrences of cyclones and duration of cyclones in the North Indian Ocean is increased due to climate change. The predictions of extreme weather events are important for proper planning of disaster management to save the human lives and to protect the coastal infrastructure. Consideration of surge level in the estimation of design elevation of various major coastal infrastructure like breakwaters, jetties, intake structures, power plants, ports and harbours will prevent damages during extreme events. Tropical Cyclone Biparjoy originated in the Arabian Sea as a Depression and intensified into a Very Severe Cyclonic Storm within a period of two days. This further intensified into an Extremely Severe Cyclonic Storm by June 11,2023. Biparjoy later subsided into a Very Severe Cyclonic Storm Off the Coast of Gujarat and continued to traverse off the Gujarat coast for nearly 3 days until it made landfall as a Very Severe Cyclonic Storm near 23.1 N and 68.3 E about 30 km South of Jakhau Port, 110 km Northwest of Dwarka. A numerical model was setup to estimate the tropical storm induced surge due to Tropical Cyclone Biparjoy. The observed Cyclone data from IMD and Joint Typhoon Warning Centre were used as input. Cyclone Biparjoy resulted in inundation of low-lying areas of coastal districts of Gujarat.