| Author | Huq, Md. Anisul |
| Call Number | AIT Thesis no.WA- 90-12 |
| Subject(s) | Coast changes--Thailand, Southern
|
| Note | A thesis 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 | The east coast of southern peninsular, Thailand has dynamically been changing, These changes are due to long time wave action, currents, littoral drift, sediment supply of the rivers, construction of structures such as breakwaters etc. Among the erosion and accretion the former is harmful to the coast.
Shorelines in the vicinity of Songkhla lagoon inlet and at the head of the upper Gulf of Thailand are studied to investigate the actual situation of beach changed. A simplified sediment budget analysis is used here. The budget, yields spatial and temporal changes of shorelines. Additionally, from the available wave data, longshore sediment transport rates are calculated. Zones of Accretion and erosion are established and are explained qualitatively using the calculated longshore transport rates. Detail analysis on volume rate of change calculation is done at the updrift region of Songkhla jetty. Characteristic height of beach changes, which relate the change of shoreline position to the volume rate of shoreline change defined. Finally the principles of several coastal defense works have discussed critically and qualitative measures are proposed to conserve some of these beaches.
It is found from the study that most severe severe shoreline erosion occurred on the west of the Chao Phraya river mouth (-14.5 m/yr.), east of The Chin (-2.15 M/yr.) and Hua Hin (-4.8 m/yr.). While accretion occurred on east of the Chao Phraya river mouth (+8.1 m/yr.) west of Mae Kong river mouth (+4.72 m/yr.) and upcoast of Songkhla jetty (+5.3 m/yr.). Average accretion rate and longshore transport rate at Songkhla amounts as 69,268 m3/year and 58,800 m3/year respectively. The characteristic height of beach changes is 3.2 m. |
| Year | 1990 |
| 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) | Gupta, Ashim Das ;Gan, Thian Yew
|
| Scholarship Donor(s) | DAAD |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1990 |