000			05149nas a2200433 a 4500
005			20260817162410.0
008			190318s2016 th uu m rtt 0| a1eng d
035			_a.b12298918
099		9	_aAIT Thesis no.WM-16-02
100	0		_aNguyen Thi Hien
245	1	0	_aAnalysis of nearshore waves and morphology under extreme climate change in the Gulf of Thailand
260			_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2016
300			_a88 p. : _bill.
490	1		_aThesis ; _vno. WM-16-02
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management
502			_aThesis (M. Eng.) - Asian Institute of Technology, 2016
520			_aClimate change is generating more effects on stochastic climate parameters from temperature, rainfall, sunlight to wind, wave and currents. The coastal areas, hence, is becoming a critical environment under extreme climate change context where have been experienced higher frequency of extreme waves recently. Meanwhile, severe erosion and deposition changes recorded due to fluctuation of wave climate from the past to present but still less specific program is built to project extreme wave conditions and sediment transport in the future, especially in the Gulf of Thailand. The study, therefore, analyzed extreme wave characteristics along the Gulf of Thailand at the six deep-water locations including Upper Gulf with shallow water areas near Petchaburi, critical economic regions near Chumphon, Cambodia and 2neighbor stations of Vietnam and Malaysia, then, Botru as the locations at Lower Gulf. The analysis has done with programing on Matlab environment for 6 hourly wave data including 3 time slices which are present days (1981-2011-NCEP data), near future (2041-2060) and far future (2081-2100) extracting from ECHAM 5 and GFDL CM2.1wind forcing results. Six wave parameters have been assessed from duration, frequency, and significant wave height of extreme events, 99thpercentile wave height as threshold, wave direction and designed wave height. The temporal and spatial wave analysis shows an increase trend of 99thpercentile wave height and 1% wave height with Northeast dominated coming wave direction atmost of location from present to future. In addition, the number of extreme events with longer duration, higher intensity goes up to 3-4 storm/year in future. Then, the designed wave height at those stations at different time slices and GCMs corresponding to different return period was calculated by fitting with Generalized Extreme Value Distribution via programing. The results indicate an increase trend about 1 m {u2013}2 m over all stations throughout the years with arrange of around 5 m at the Lower Gulf and 3.5 m {u2013}4 m in the Upper stations in future with different return period. Finally, the sediment transport at Botru was examined by MIKE 21 ST during those mean extreme events and 20 years return period event from present to future days. The morphology results at Botru bank, witnessed considerable changes from present to future while the bed level decrease at the South parts and the 6 m depth. The erosion and deposition locations are then seen at the South and the North, respectively. Last but not least, the bed level during 20 year return period event could change 80 cm {u2013}1 m for the whole region from present to future with great accretion at the North of the bank and bar occurring at 310 m -330 m from the shoreline in near and far future.
650		0	_aClimatic change _zThailand, Gulf of _xAnalysis
700	0		_aSutat Weesakul, _eChairperson
700	1		_aBabel, Mukand Singh, _eExamination Committee
700	1		_aShrestha, Sangam, _eExamination Committee
700	0		_aSomchai Chonwattana, _eExamination Committee
710	2		_aDeutscher Akademischer Austausch Dienst (DAAD) Germany, _eScholarship Donor
710	2		_aAIT Fellowship, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. WM-16-02
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B04414
907			_a.b12298918 _bmnait _cm
902			_a251119
998			_b0 _c190318 _dm _ea _fm _g0
945			_lmnait
945			_lmnait
945			_lmnarc
942			_c20
942			_c40
909			_aBarcode : 30050120800221 _bCREATED : 2019-03-18 _cRECORD # : i13160825 _dLPATRON : 1033703 _eLCHKIN : 2025-05-09 _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 1 _iTOT CHKOUT : 2 _jTOT RENEW : 0
909			_aBarcode : 30050120800262 _bCREATED : 2019-03-18 _cRECORD # : i13160837 _dLPATRON : 1034549 _eLCHKIN : 2025-11-19 _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 3 _iTOT CHKOUT : 4 _jTOT RENEW : 3
909			_aBarcode : 30050120878128 _bCREATED : 2019-06-19 _cRECORD # : i13194859 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
999			_c4900 _d4900