查詢結果分析
相關文獻
- 高解析度空載光達資料結合地形開闊度分析於構造地形特徵之應用
- 空載光達資料產製數值高程模型之品質評估探討
- Echo Detection and Land Cover Classification of Airborne Waveform LiDAR Data
- 適應性點雲過濾演算法於空載光達資料產生數值高程模型之研究
- Automatic Selection of Ground Points for Dem Generation from Airborne Lidar Data
- 空載光達點雲於DEM自動生產與精度評估--使用ISPRS測試資料為例
- 利用3D LiDAR技術應用於結構物監測及地形數化之研究
- 應用無人機光達解密隱藏於密林中之古崩塌地
- 苗栗丘陵河階之地形學研究
- 臺灣中部活斷層的分布與地形特徵
頁籤選單縮合
題 名 | 高解析度空載光達資料結合地形開闊度分析於構造地形特徵之應用=Application of High-resolution LiDAR DEM for Extracting Terrain Openness: A Case Study in the Tsaoling Landslide Area |
---|---|
作 者 | 陳奕中; 侯進雄; 謝有忠; 陳柔妃; 吳若穎; | 書刊名 | 航測及遙測學刊 |
卷 期 | 18:2 2014.05[民103.05] |
頁 次 | 頁67-78 |
分類號 | 440.98 |
關鍵詞 | 開闊度分析; 空載光達; 數值高程模型; 地形特徵; 草嶺山崩; Openness; Airborne LiDAR; Digital elevation model; Geomorphic fractures; Tsaoling landslide; |
語 文 | 中文(Chinese) |
中文摘要 | 地形開闊度分析之地形計測方法能突顯地形角度變化強烈處,是分析地形資訊的利器。本研究利用 1米空載光達測製數值高程模型,藉由地形開闊度計算得到正與負值兩種結果,其正值能反映山脊線、崩崖、階地,負值則為河谷、水系與蝕溝分布等構造地形,並進一步由紅色立體投影圖同時展現正負兩地形開闊度之凸凹特性,以判釋出草嶺地區之微地形特徵。最後,由負地形開闊度(灰階)搭配坡度分析 (紅階)細部判釋草嶺山崩之崩塌面蝕溝於不同岩層分布,並估算出 1999-2011年期間卓蘭層及錦水頁岩基岩下切侵蝕速率分別為平均每年下切 31-39公分、54- 89公分,顯示錦水頁岩抗蝕力較弱。 |
英文摘要 | Openness methods can visualize the topographic character of angular measure between surface relief and horizontal distance; it is a useful tool for determining geomorphic fractures. We adopted the high-resolution Airborne LiDAR (Light Detection And Ranging) DEM to obtain the positive and negative values. Positive shows reflect ridge, scarp and terrace, whereas negative describe valley, river and gully. Red Relief Image Map (RRIM) can identify fine-scale geomorphic change when it is combines the positive and negative values. Many of the characteristics that obtained from the negative calculation (marked in gray-scale) and an analysis of stacked slope (marked in red-scale), to interpret the position of eroded gullies in the Tsaoling sliding area. In this study, we investigated the distribution of erosion gullies and calculated the bedrock incision rate for the Cholan Formation and Chishui Shale for 1999 and 2011, which were 31 to 39 cm/year and 54 to 89 cm/year on average, respectively. These results indicated that the Cholan Formation has a higher resistance to erosion than the Chishui Shale, where the erosion was more serious. |
本系統中英文摘要資訊取自各篇刊載內容。