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106/10/27 14:00 Dr. Jaya Kumar Seelam（Ocean Engineering Department, CSIR-national Oceanography, India）演講
演講公告
張貼人：網站管理員 ╱ 公告日期：2017-10-19演 講 公 告
主講人：Dr. Jaya Kumar Seelam
地點：中央大學科學一館S-325教室
摘要：
講題：Investigations of surfzone processes along a beach stretch on central west coast of India
主講人：Dr. Jaya Kumar Seelam
Ocean Engineering Department, CSIR-national Oceanography, India
時間：10月27日（星期五）下午2點
地點：中央大學科學一館S-325教室
摘要：
Surfzone measurements and beach profile studies along the coastal stretch between Miramar and Keri beaches on the central west coast of India are being carried out by CSIR-National Institute of Oceanography, Goa. Beach profiles over a period of 23 years along Miramar beach are measured. Littoral Environmental observation measurements comprising of breaking wave parameters are measured at various locations and at different intervals and seasons, and these parameters are used to estimate the longshore sediment transport along the coastal stretch. Self-recording pressure transducers and recording currents were deployed in the surfzone to measure the surfzone wave parameters and currents respectively, which was carried out for the first time in this region. GPS based drifters, designed and developed in house are used to track the surfzone currents over half tidal cycle.
Analysis of surfzone wave parameters indicated the influence of tide on the wave heights. Surfzone currents measured in the field were compared with existing formulae in the literature and found that most of the equations cannot be used as it is for estimating the longshore currents for this region. From the beach profile analysis, the maximum vertical elevation changes and horizontal excursion of the berm are estimated. Numerical modelling of the nearshore and surfzone waves and currents are carried out using SWASH, MIKE21 and Delft3D numerical models with varying satisfaction levels. This presentation includes the experiences gained by the author and his team in the measurements and numerical modelling surfzone and nearshore coastal physical processes.
最後修改時間：2017-10-19 AM 8:44
