Please use this identifier to cite or link to this item:
DC FieldValueLanguage
dc.contributor.authorSong-Jin Linen_US
dc.contributor.authorWei-Li Liangen_US
dc.description.abstractTyphoon Soudelor brought high-intensity, short-duration rainfall and was the largest typhoon event to strike Taiwan in 2015. However, the effects of the typhoon on natural forested areas have been little reported. This study investigated the spatial distribution of new landslides in the Tsukeng catchment in Fushan Experimental Forest and compared their effects through satellite images and field investigations. Based on satellite image analysis, 62 new landslides were induced by the typhoon. The surface area of the landslides increased with slope gradient, except for areas of stream-bed fluctuation. The characteristics and types of landslides were different along three field investigation lines. The Shuiguan trail showed smaller landslides but included four types, namely cracks, collapses, gully expansions, and compounding. For 56% of the landslides occurring at downslope locations along the Tsukeng stream, cracks or collapses were also found at corresponding locations in the upslope direction along the Shuiguan trail. It suggests the consecutiveness of mass movements between the upslope and downslope, as well as impending movements at these locations in the near future. Since these effects are barely detectable from satellite images alone, it is necessary to use them in combination with field investigations to collect the greatest amount of information possible.en_US
dc.description.abstract蘇迪勒颱風帶來的短延時強降雨為2015年影響臺灣最大的颱風事件,然而蘇迪勒颱風對人為干擾少 之天然林區域所造成的影響還少有研究調查,本研究調查蘇迪勒颱風後對於福山試驗林粗坑溪集水區內的新 生崩塌地的分布,並比較衛星影像圈繪以及現地探查所得結果之異同。根據衛星影像分析,新生崩塌地總計 62處,除了河道變動外,崩塌面積隨著坡度上升而擴大。三條現地探查路線之崩塌型態不一致,其中水管步 道之崩塌規模雖然小,但卻包含裂縫、山壁崩塌、沖蝕溝擴大、兩者以上的複合型態。粗坑溪沿岸處崩塌事件 中有56%可以在上坡之水管步道中找到位置相對應的裂縫或崩塌,可能為上下坡面塊體連續移動,這些區域未 來再次擴大、移動、滑動的可能性高;然而若單以衛星影像難以得知此徵兆,凸顯結合現地探查之必要性及 優點。zh_TW
dc.relation中華水土保持, Volume 49, Issue 1, Page(s) 1-11.zh_TW
dc.subjectField investigationen_US
dc.subjectlandslide typeen_US
dc.subjectnatural forested catchmenten_US
dc.subjectsatellite image analysisen_US
dc.titleLandslide Distributions Identified by Satellite Images and Field Investigations in a Natural Forested Catchment: The Case of Landslides Induced by Typhoon Soudelor in 2015en_US
dc.title衛星影像判釋與現地探查天然林集水區新生崩塌地分布之比較: 以 2015 年蘇迪勒颱風誘發崩塌為例zh_TW
dc.typeJournal Articlezh_TW
item.openairetypeJournal Article-
item.fulltextwith fulltext-
Appears in Collections:第49卷 第01期
Files in This Item:
File Description SizeFormat
97385-1.pdf11.88 MBAdobe PDFView/Open
Show simple item record

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.