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

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Title:	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 Application of Airborne LiDAR DEM to Identify the River Capture between Tachia River and Lan Yang River
Authors:	鄧嘉欣羅偉陳柔妃謝有忠
Contributors:	地質系
Keywords:	空載光達河流襲奪地形開闊度水系分析 Airborne LiDAR River capture Topographic openness River Analysis
Date:	2015-06
Issue Date:	2016-07-26 10:21:47 (UTC+8)
Abstract:	本研究以高精度空載光達資料，配合地形計測分析，判釋研究區域內之構造地形單元，比對區域內水系發育、岩性特徵、構造形態與階地分布之間的關係，以及野外調查資料驗證，進而探討環山地區之河流襲奪問題。綜合各項分析成果，顯示蘭陽溪上游大規模崩塌事件，導致暫時侵蝕基準面的改變，使得蘭陽溪向源侵蝕速率較大甲溪為快，進而造成蘭陽溪發生河流襲奪的現象。 The advent of airborne Light Detection and Ranging (LiDAR) technique provided a high resolution Digital Terrain Model (DEM) to explore the morphological evolution at the different time and space scales. In this study, we used openness image-processing technique to visualize the topographic characteristics and identified the river capture between Tachia River and Lan Yang River.
Relation:	鑛冶：中國鑛冶工程學會會刊； 230期 (2015 / 06 / 01) ， P120 - 127
Appears in Collections:	[Department of Geology] journal articles

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