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  • 學位論文

應用航空影像建置數值地形模型-以九九峰地區為例

Digital Surface Model construction of high relief area – example of 99 peaks, Taiwan

指導教授 : 張國楨
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摘要


九九峰位於台灣南投縣,本區域內大都由高聳的山峰及深溝的地形所構成,平均高程約為500公尺,主要組成的地層物質為極堅實的變質砂岩的卵礫石與幾未膠結之粗、細粒沉積物的基質所組成。九九峰岩層形成之年代小於一百萬年,此種岩體組成之物性相當軟弱,但高聳直立地形地貌之形成,令人匪夷所思。此外,造山帶前陸盆地之沉積礫岩,礫岩間顆粒與顆粒的接觸,再因大地應力的擠壓,而引致卵礫石呈星狀破裂;再者,因地處於車籠埔活動斷層及雙冬斷層之間,強烈的構造擠壓等原因,豐富、多樣的地質活動及構造發育,是可以預期的。 本研究利用不同軟體來處理遙測影像,並建置數值地型模型;並配合測量儀器Real Time Kinematic(RTK) GPS進行現地地面參考點之量測及解算。合併上述方法,本研究建置出2公尺之高精度數值地型模型。基於上述之數值地型模型及航空相片立體對等,本研究進行九九峰地區之構造地形、地質分析。在建置所得的數值地型模型可見本區內有數條共軛之平移斷層;配合空載雷射掃描資料的數值地型模型與RTK在現地剖面量測之資料點相互校正及比對,來評估本研究所得之數值地型模型的精度;另將建置之數值地型模型編修,最後並探討本區域內之地形、地質構造。

並列摘要


Located at Nantou County, Taiwan, the 99 peaks in this region composed mainly of the steep mountainous peaks and the deep gullies. The average elevation in this area is approximately about 500 meters. The area is composed mainly extremely hard and durable gravels to boulders, and poor cemented fine grain matrix. The rock formation in 99 peak rock is smaller than 1 Ma. To forming this high relief by very poor cemented granular material is nearly impossible. In addition, deposition of conglomerate orogenic zone foreland basin, the molasses conglomerate as a key for the evolution of orogenic belt, recording the erosion and exhumation of mountain ranges. Moreover, the Chelungpu fault situated just nears the study area. Due to its special geological characteristic, 99 peaks attract attentions. By using different softwares, this research tries to establish high resolution Digital Terrain Model (DTM), accordingly the Real Time Kinematic (RTK) GPS equipment have been used to measure the ground reference points in high resolution. By means of the Airborne LiDAR data and RTK techniques, the adjustment of the DTM data has been according evaluated. Overall, this research establishes 2 meter high resolution DTM. Based on the above-mentioned DTM and aerial photos, the geological structures have been analyzed, and as a result, the conjugated fault system has been identified.

參考文獻


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被引用紀錄


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