Rainfall and rainfall probability in the Su watershed, Khon San district, Chaiyaphum province
2000
Supachart Wannawong
Study on rainfall and rainfall probability in the Su Watershed, Khon San District, Chaiyaphum Province, employed the rainfall data recorded at the Nam Chee Watershed Research Station during 1982-1997 (16 years). Such data were complied by week and classified into 5 ranges, = 5, 10, 15, 20 and 25 mm. The concept of probability, conditional and unconditional probability, were used to analyze data and explain the outcome and the characteristics of event occurrences at 0.50 = P = 1.00. Results showed that the rainfall probability for given amount of = 5, 10, 15, 20 and 25 mm of rainfall totally occurred 32, 30, 26, 21 and 17 weeks for nonconsecutive rainfall and 32, 27, 24, 20 and 16 weeks for consecutive rainfall.
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