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題 名 | 筒狀模式之土壤雨量指數應用於土石流防災警戒=Soil Water Index Applied as a Debris Flow Warning-Reference Based on a Tank Model |
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作 者 | 陳樹群; 蔡喬文; 陳振宇; 陳美珍; | 書刊名 | 中華水土保持學報 |
卷 期 | 44:2 2013.06[民102.06] |
頁 次 | 頁131-143 |
分類號 | 434.273 |
關鍵詞 | 筒狀模式; 土壤雨量指數; 土石流災害; 警戒基準值; Tank model; Soil water index; Debris flow disaster; Warning threshold value; |
語 文 | 中文(Chinese) |
中文摘要 | 筒狀模式為模擬雨量在地表逕流及土層入滲及滲流等移動行為之概念模式。日本將 模式分為三層筒,可視為表層、中層與深層等土壤層,三筒水深總和稱為土壤雨量指數 (SWI), 可應用於坡地防災。本研究以日本研究為基礎,結合現行警戒基準值概念,並分析東部土石流 觀測站案例。結果顯示SWI 與第二筒水深H2 為線性關係,代表中層土壤水分與土石流案例相 關性最高,可應用於土石流預警。且SWI>107mm 方有土石流發生,可作為東部地區防災警戒 參考。 |
英文摘要 | A tank model is a conceptual model which simulates the moving behavior of water in the soil layers, including runoff, infiltration and percolation. The water depths of three tanks, representing surface, middle and deeper soil layers, respectively, were summed up as a soil water index (SWI). This study analyzes the debris flow cases in Eastern Taiwan based on the tank model and the current warning threshold value for debris flow. Results showed SWI has a linear relationship with the depth in the second tank, i.e. the soil moisture in the middle soil layer is closely related to the occurrence of debris flow cases. In addition, debris flow occurred when SWI>107mm. This finding can be used as a warning for debris flow in Eastern Taiwan. |
本系統中英文摘要資訊取自各篇刊載內容。