NAME =  Mrs. Tantanee, Sarintip  
ORGANIZATION =  Naresuan University  
ADDRESS =  Civil Engineering Department, Naresuan University ,Muang, Phitsanulok 65000  
COUNTRY =  Thailand  
PHONE =  66-55-261-061  
FAX =  66-55-261-062  
E-MAIL =  stantanee@yahoo.com  
POSTER_ONLY =  no  
THEME =  T2  
DATE =  27-Jul-04-16:44:16  
ABSID = T2MTS27Jul04164416 
TITLE = Rainfall Distribution Pattern Investigation with  Unit Disaggregation Curve (UDC) Technique  
AUTHOR_1 = Tantanee, Sarintip 
INSTITUTION_1 = Graduate School, Khon Kaen University 
PRESENTER = AUTHOR_1 
AUTHOR_2 = Patamatumkul, Snguan 
INSTITUTION_2 = Civil Engineering Department, Khon Kaen University 
AUTHOR_3 = Oki, Taikan 
INSTITUTION_3 = Hydrology and Water Resources Engineering, Institute of Industrial Science, University of Tokyo 
ABSTRACT =   The technique of Unit Disaggregation Curve (UDC) has been developed in this study in order to investigate the pattern of rainfall distribution within a year. The proposed technique is based on the concept of Disaggregation model. UDC is constructed from the historical rainfall records, which have been identified as signal. The data used in the study are the records from 4 stations distributed over Northeastern of Thailand, of which the length of records is at least 50 years. Applying wavelet to those signals, approximations or trend, and details or noise, are separated. The analysis emphasizes on the approximations that apparently demonstrate similar pattern of distribution in each year. The rainfall distribution pattern graphs of each year are recognized from these approximations. The obtained UDC is generated from the representative pattern of rainfall distribution graph within a year. UDC is expressed in the unit curve that is able to apply for any level of annual rainfall. By coupling the signal of details, the further study can be undertaken to develop the new technique of rainfall prediction process.