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  • 學位論文

以台灣中部地區降雨特性探討土石流警戒基準值

A study of debris flow warning criteria using rainfall characteristics in centeal Taiwan

指導教授 : 李錦育

摘要


近年來降雨極端事件頻傳,使得降雨時空分佈不均,導致降雨強度、降雨頻率與降雨延時等,都有著極大的變化。臺灣地區在經歷1999年的921地震後,山坡地土體鬆動嚴重,一場颱風降雨即有機會引起土石流的發生,因此將台灣中部地區141個測站所測得的颱風降雨資料,依照每一場颱風之降雨強度進行水文頻率分析,分析方法採用常態分佈法、對數常態分佈法、極端值第一類分佈法、皮爾遜第三類分佈法及對數皮爾遜第三類分佈法等五種方法,並研究各區域土石流潛勢溪流降雨延時之重現期距及繪出等雨量圖,分析颱風降雨對台灣中部地區所造成之影響。

並列摘要


In recent years, more frequent extreme rainfall events have led to the uneven temporal-spatial rainfall distribution, which had resulted in the dramatic variations in rainfall intensity, rainfall frequency, and rainfall duration. After the 921 Earthquake in 1999, the hillside soils of Taiwan have been severely loosened. Any typhoon rainfall could triggering debris flows possibly. Therefore, the data of typhoon rainfall observed at 141 rainfall stations in the central region of Taiwan have been used in the hydrologic frequency analysis (according to the rainfall intensity of each typhoon event). Five analysis methods are adopted for this research, namely Normal Distribution, Logarithmic Normal Distribution, Extreme-Value TypeⅠDistribution, Pearson TypeⅢ Distribution, and Log-Pearson TypeⅢ Distribution. This research also plotting the isohyetal rainfall of debris flow-prone streams and return periods of rainfall duration in each area in central Taiwan. The influence of typhoon rainfall over the central region of Taiwan is analyzed in this research as well.

參考文獻


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被引用紀錄


謝依霖(2015)。台東太麻里集水區崩塌因子之研究〔碩士論文,國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346/NPUST.2015.00007

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