- 期刊
應用空載光達數值地形模型於基隆河之河流地形研究
Using airborne LiDAR derived DEMs to analyze river morphology in Keelung stream
摘要
本研究利用空載雷射掃描技術(Airborne LiDAR)製作高精度數值地形模型，探討基隆河流域河階分佈及水系發育，結果顯示河川水系受控於地質及地形條件，主要支流發育在中游的八堵向斜，北側的集水區較南側平緩，對稱性的水系暗示集水區內並無差異性的地殼變動。基隆河自暖暖到侯硐之間，各次集水區之面積、形態差異較大，較無法以單一河流階地或構造整體抬升來解釋，而在暖暖附近之坡地地形具有崩塌特徵，導致古山崩造成河道的堰塞並影響次集水區發育。經野外勘查結果，判定本區可能坡面破壞形式以岩石傾翻(toppling)或楔型岩石崩落(wedge failure)型態存在。
並列摘要
We organized and performed airborne LIDAR mapping in the Metropolitan Taipei area in order to produce high-resolution and high-precision digital elevation models for geological research. Applying the newly acquired LIDAR DEMs from the MOEA Central Geological Survey, we analyzed geologic and geomorphic features of the Keelung River drainage area. The studied features include topographic scarps and lineaments, river terraces, drainage basins, and landslide scarps. Based on our analysis of the acquired LIDAR DEMs, we arrived at the following findings and conclusions: 1) The river basin analysis based on the LIDAR DTM indicates that the development of the Keelung River was influenced by regional structural patterns and topographic slopes. Tectonic influences appear to be relatively small for the development of the Keelung River. 2) Along the Keelung River, the LIDAR DTM indicates anomalous terrace morphology and river drainage at the middle section of the river. We interpreted this area to be caused by paleo-landslides, which form a dammed lake in the river and subsequently developed the main terrace of the same level for large area.
延伸閱讀
- 鄧嘉欣、羅偉、陳柔妃、謝有忠（2015）。利用高精度空載光達重新探討河流襲奪之問題：以大甲溪與蘭陽溪為例。鑛冶：中國鑛冶工程學會會刊，59(2)，120-127。https://doi.org/10.30069/MM.201506_59(2).0010
- 張崴、蕭宇伸、張榮傑（2017）。UAV航拍技術應用於河道變遷土砂監測和山區地形製圖之可行性分析。中華水土保持學報，48(1)，1-13。https://doi.org/10.29417/JCSWC.201703_48(1).0001
- 林彥廷、徐若堯、韓仁毓（2020）。次足跡全波形空載光達技術於河床粗糙度分析。中國土木水利工程學刊，32(6)，543-550。https://doi.org/10.6652/JoCICHE.202010_32(6).0007
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