Study on Hydrological Trend after Dam Construction in Shihmen Reservoir
| Autor: | HUANG, CHENG-WEI, 黃晟瑋 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 The effect of global warming has led to impact on hydrological environment, thus resulting in the structural change of hydrological cycle. The focus of this paper is the variation of hydrological characteristics and hydrological trend in the catchment area after dam construction of reservoir. In this paper Mann-Kendall (MK) trend test is used for the trend analysis of observed discharge and rainfall based on the data of Xia-Yun, Kao-Yi, Leng-Chiad, Yu-Feng, and Xiu-Luan Discharge Measuring Stations (1965〜2002 and 2009~2016) and the data of Shihmen, Xia-Yun, Chang-Xing, Gao-Yi, San-Guang, Yu-Feng, Xiu-Luan, Chi-Duan, Ba-Ling, Ga-La-He, An-Bu, Xin-Bai-Shi, Chen-Shi-Bao, Fu-Xing, and Xi-Qui-Si-Shan Rainfall Stations (1965~2016) after dam construction of Shihmen Reservoir (1964) and the adoption of anomaly method with significant level α=5％. The result of trend test of observed discharge indicates that, after dam construction of Shihmen Reservoir (1964), there is no significant trend in annual runoff, annual mean daily discharge, max peak discharge, and annual maximum daily discharge of all discharge measuring stations, except for the significant decline trend of annual maximum daily discharge (1965~2002) of Xia-Yun Discharge Measuring Station. This result indicates the trend of daily depletion of minimum discharge after dam construction (1964) in Shihmen Reservoir catchment area. The result of trend test of observed rainfall indicates that, the rainfall variables of various rainfall stations showing rising trends after dam construction in Shihmen Reservoir (1964) include: annual rainfall of Shihmen, Yu-Feng, and Ba-Ling Rainfall Stations, annual rainy days of Xi-Qui-Si-Shan Rainfall Station, and maximum annual three-day rainfall of Chang-Xing Rainfall Station; the rainfall variables showing significant declining trend include: annual rainy days of San-Guang and Yu-Feng Rainfall Stations. This result indicates the trend of significantly increased rainfall intensity of Yu-Feng Rainfall Station in Shihmen Reservoir catchment area after dam construction (1964). |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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