| Author | Narongsak Vichetpan |
| Call Number | AIT Thesis no. 280 |
| Subject(s) | Coast changes
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology,
Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | A straight sedimentary coastline containing headlands, if it
suffers persistent waves from an oblique direction and no replenishment is provided for material removed down coast, will assume a crenulate shape which becomes progressively more indented. Finally a shape is
reached which is in equilibrium with the waves. This occurs when the incoming waves break simultaneously around the periphery and there is no further longshore drift. The development of such equilibrium shaped bays was studied by means of a model in which wave direction and wave periods were the sole
variables. Thus the wave height, water depth, beach height and sedimentary material were the same throughout. The shape of the bay at various stages from straight line to fully stable was measured after various wave durations. It was found that
the major curved portion of the water line was a logarithmic spiral, the constant of which varied throughout. A consistent pattern was observed for this constant for the three wave approach angles of 30°, 45° and 60° and the three wave periods of 0.6, 1.0 and 1.4 seconds. |
| Year | 1969 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Silvester, Richard |
| Examination Committee(s) | Pichai Boonyakanjana ;Ackermann, Norbert L |
| Scholarship Donor(s) | Asian Institute of Technology |
| Degree | Thesis (M. Eng) - Asian Institute of Technology, 1969 |
