Journal of Marine Science: Research & Development
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Management of disasters is a complex process with multi-dimensional ramifications. A case study of disaster management
plan for coastal stretch of Andhra Pradesh and Orissa, India is described using more than 100 years cyclone and associated
storm surge data. Return periods for various cyclone events are determined. The maximum probable surge amplitudes are
simulated using numerical storm surge models. The maximum probable total water levels are also calculated by superimposing
the tidal amplitudes and wind wave setup on the surge amplitudes. The 50-year return period event is considered for computation
of total water levels and based on this, protection measures are suggested for prevention of flooding along the coasts.
Using the advanced two-dimensional depth integrated (ADCIRC) circulation model based on finite-element formulation
is applied for the simulation of surges and associated landward inundation generated by a cyclonic storm crossing the east
coast of India. High resolution precise land topography data is an essential ingredient for the computation of accurate extent
of inundation and local water levels. The data sets which we use for our experiments include course resolution (1.8km) data
of GEBCO, high resolution (90m) data of Shuttle Radar Topography Mission(SRTM) and very high resolution (10m) data of
CARTOSAT-1 (IRS-P5). It is demonstrated through the model that the need of high resolution ground truth data for better
prediction of inundation levels using specific cyclonic events. The surges are validated with the sea level anomaly data. Similarly,
significant wave heights generated by some extreme events are compared with altimeter data for validation.
A. D. Rao was awarded Ph.D. at the age of 25 years for his work on Numerical modeling of storm surges in India from Indian Institute of Technology
Delhi and postdoctoral studies from University of Reading, UK. He also visited Florida State University as a visiting faculty for one year. His research
interests include development of numerical models for storm surges, ocean state forecast, internal waves. His work in this field is very well recognized
through his publications and to his credit; he has published about 175 refereed papers in various reputed international and national journals.
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