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題名 | 和社溪流域的崩塌地變遷與各子集水區土石流發生的比較:1993至2004年=The Geomorphic Response of Landslides and Debris Flows of the Hoshe Basin and Its Sub-catchments, Central Taiwan: 1993~2004 |
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作者 | 劉盈劭; 沈淑敏; 張瑞津; Liu, Yin-shao; Shen, Su-min; Chang, Jui-chin; |
期刊 | 工程環境會刊 |
出版日期 | 20130100 |
卷期 | 30 2013.01[民102.01] |
頁次 | 頁35-45 |
分類號 | 434.273 |
語文 | chi |
關鍵詞 | 崩塌; 土石流; 航照判釋; 和社溪; Landslide; Debris flow; Aerial photo interpretation; Hoshe Basin; |
中文摘要 | 臺灣島邊坡作用發達,尤其位於中高海拔的上游集水區,因地形起伏大,邊坡與河道耦合性佳,一旦受到大颱風或地震的驅動,廣泛的崩塌與土石流常相伴而生。本研究以陳有蘭溪源流區之一的和社溪流域為研究區,判讀1993至2004年間五個時期的航空照片,數化並套疊分析賀伯颱風前後與集集地震、桃芝颱風、敏督利颱風後的崩塌分布,以了解和社溪在經歷主要颱風和地震事件的邊坡地形作用變化狀況。研究結果發現,和社溪流域在賀伯颱風、集集地震誘發的崩塌最多,敏督利颱風後崩塌趨緩。此外,流域內各子集水區雖普遍發生土石流,但仍同中有異,此與各子集水區的崩塌位置與密度、河道侵淤狀況、河道寬度以及人為開發歷程的不同有關。 |
英文摘要 | By comparing 5 sets of aerial photographs of the Hoshe Basin, which represent the pre-event status, Typhoon Herb, Chichi earthquake, Typhoon Toraji and Typhoon Mindulle, respectively, this research attempts to understand the change of the spatial pattern of landslides through various major events from 1993 to 2004. It is found that the most influential events are Typhoon Herb and Chichi earthquake and the system became more stabilized after Typhoon Mindulle in the Hoshe Basin. It is also found that the neighboring sub-catchments with similar geological and topographical characters did react differently in response to these triggering events due to various local factors. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。