| Author | Ahsan, Md. Rajib |
| Call Number | AIT Thesis no.WA-94-06 |
| Subject(s) | Storm surges--Bengal, Bay of
|
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of
Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. WA-94-06 |
| Abstract | Realizing the severity of storm surge problem in the Bay of Bengal, particularly along
Bangladesh coast, the present study has intended to (i) obtain Probable Maximum Cyclone, (ii)
provide the worst possible surge heights along Bangladesh coast and (iii) understand and define
the nature of the tropical cyclones those hit Bangladesh. For the purpose of obtaining Probable
Maximum Cyclone and the worst possible surge height range along the Bangladesh coast,
design values of storm parameters with return periods of 100, 250, 500 and 1000 years have
been considered. The corresponding storm parameter values have been extracted from detailed
statistical analysis. Treatment of tidal phenomenon has received due attention.
Collected data on storm parameters of seventy storms for the period from 1876 to 1991
have been used in the study. BODINE'S (1971) quasi-two-dimensional bathystrophic storm
surge model has been used for surge height simulation. The model has been calibrated for three
severe cyclones those hit Bangladesh coast. They are October 1960 cyclone, November 1970
cyclone and April 1991 cyclone. The computed surge heights matched extremely well with the
recorded maximum surge heights. The maximum variation has been 0.85 % of the observed
maximum height.
It is found from this study that, the vicinity of Chittagong is the most vulnerable area
because of the existence of extreme shallow long continental shelf along its coast. The
discharge of the great river system of Ganges-Brahmaputra with high concentration of sediment
causes the profound shallowness. And the long stretch of shallow shelf results in continuous
accumulation of surge height when the storm approaches the coast. From the study it has been
possible to classify the zones along the entire Bangladesh coast in terms of probable magnitude
of surge height. |
| Year | 1994 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. WA-94-06 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Suphat Vongvisessomjai; |
| Examination Committee(s) | Imamura, Fumihiko ;Sutat Weesakul ; |
| Scholarship Donor(s) | The Government of Denmark; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1994 |