Identification of Cataclinal Slopes、Anaclinal Slopes and Orthoclinal Slopes With High Resolution LiDAR DTM －Chenyoulen Stream for Example

• Main Authors: Yu-Chen Koye, 柯昱岑
• Other Authors: Ching-Liang Tseng
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/61805205296459516159

碩士 === 國立成功大學 === 地球科學系碩博士班 === 93 === 　Taiwan develops fast in economy, the plain has not applied under the situation used yet, has then developed the mountainside in a large amount. However, Taiwan is located on the plate boundary with violent geological movement, also there is the typhoon disaster in Taiwan, usually causes seriously geological damage in the mountainside. Although the natural disaster cannot be predicted precisely, the damage could be reduced if the position of cataclinal slopes、anaclinal slopes and orthoclinal slopes can be known exactly when choosing the position of building or other development. This research is mainly aim at the accuracy and data source of DTM to discuss its differences between cataclinal slopes、anaclinal slopes and orthoclinal slopes identified. The development of LiDAR becomes mature daily, it is not only possessed the advantage of fast producing DTM also it can filter the plant in the ground to make the characteristic of objective clearer. 　This research regards Chenyoulen Stream as the studies field location. In order to find the position of cataclinal slopes、anaclinal slopes and orthoclinal slopes, I utilize GIS software to proceed the calculation of the topographic and bedding-plane intersection angle with 1m、5mDTM from LiDAR and 5m、40mDTM from aerial photogrammetry. Computation of the topographic and bedding-plane intersection angle requires the derivation of four spatially distributed variables: topographic slope, slope aspect, bedding dip and dip direction. At last, I compare the collapse determined by aerial photogrammetry with the judgments of cataclinal slopes、anaclinal slopes and orhtoclinal slopes area. The result indicate that the identifation of cataclinal slopes by LiDAR 5mDTM and 1mDTM is better than by the 5m DTM and 40mDTM from aerial photogrammetry and there is no significant difference between LiDAR 1mDTM and LiDAR 5mDTM .