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題名 | 應用數值航測於南投中寮紅菜坪地滑之研究=The Application of Digital Aerial Photography in the Study of Hungtsaiping Landslide, Chungliao, Nantou County |
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作者姓名(中文) | 魏正岳; 李錦發; | 書刊名 | 經濟部中央地質調查所彙刊 |
卷期 | 19 民95.09 |
頁次 | 頁39-59 |
分類號 | 356.232 |
關鍵詞 | 紅菜坪地滑; 集集地震; 數值航測; Huangtsaiping landslide; Chi-chi earthquake; Aerial photography; |
語文 | 中文(Chinese) |
中文摘要 | 本研究係藉由數值航測技術配合現地地質調查來進行紅菜坪地滑之研究,以瞭解大區域地滑之特性及其控制因素,進而對地滑機制能有進一步的瞭解。利用數值航測立體判釋,可將航照利用電腦將影像放大判釋,精確的描繪出地滑分布位置及影響範圍,同時可從不同方向詳細觀測山崩特性,更可從不同時間的航照利用航測處理後相互比較,勾繪出崩塌地的時空變化。研究區域為南投縣中寮鄉樟平溪上游永祿溪之紅菜坪地區,該區位於九份二山之西方,九份二山位於粗坑背斜東翼,紅菜坪地滑區則位於西翼。研究結果顯示紅菜坪地滑區於集集地震前後最大水平位移量達32公尺左右,平均位移量為18公尺左右,滑動方向為西北向,並且滑動方向與區域岩層傾斜方向吻合。 |
英文摘要 | The Chi-Chi Earthquake (M□=7.3) induced many gigantic landslides in western central Taiwan in 1999, such as the Tsaoling, Chiufenerhashan and Hungtsaiping landslides. The Tsaoling and Chiufenerhshan landslides were rapidly dipping slope movements, but the Hungtsaiping was slower occurring 3 to 5 days after the Chi-Chi earthquake. Digital aerial photogrammetric techniques help us to identify some characteristic features of displacement after the Chi-Chi earthquake to determine the lamdslide area and their movement vectors. Based upon geomorphologic and geological investigation, the characteristics and mechanisms of the landslides are clearer. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。