Offshore transport and resulting beach profiles | |
| Author | Karim, A. K. M. Shamsul |
| Call Number | AIT Thesis no.WA-86-6 |
| Subject(s) | Shore-lines Sediment transport |
| Note | A thesis study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Storm waves erode material on a beach and transport it offshore causing shoreline recession, while post-storm waves return the material transported offshore to the beach face resulting in shoreline advance. This cyclic change of beach and offshore sediment transport are interactive depending on characteristics of wave and beach. This information is required for planning and design of coastal structures. This study aims to quantify the above phenomenon through laboratory experiments in a wave flume in order to i) visualize the processes of wave transformation and sediment transport: and ii) obtain data for numerical modelling. It is found from the laboratory experiments that i) the wave height outside the breaker zone can be well described by theoretical solution of wave shoaling while the wave height from the breaker line to the location of wave runup decays linearly : ii) the beach classification developed by Sunamura and Horikawa ( 1974) confirms the experimental results: and iii) the breaking condition of wave developed by Miehe (1944) is same for offshore sediment transport and resulting beach profile . It is found from the numerical modelling that i) the numerical model developed can simulate the chronological changes of beach morphology; and ii) the offshore sediment transport rate on sloping beaches is lower than developed on plain beaches. |
| Year | 1986 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Suphat Vongvisessomjai |
| Examination Committee(s) | Wang, Tsan-Wen ;Prida Thimakorn |
| Scholarship Donor(s) | The Government of Australia. |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1986 |