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  • 學位論文

衛星影像判釋技術應用於山崩潛勢分析及風險評估模式建置之研究

Application of Satellite Image Classification Technology in Landslide Potential Analysis and Construction of Risk Assessment Model

指導教授 : 陳怡睿

摘要


近年來由於科技與經濟的高度發展,原有的平原區已逐漸飽和,導致人為開發不斷向山坡地帶延伸,加上受到全球極端氣候影響,颱風及暴雨所引致之山坡地災害,其影響範圍及受損程度皆比以往嚴重,使得位於潛勢區內之鄰里社區災情頻傳,對於當地民眾造成了不同程度的衝擊。有鑑於此,建立一套風險評估模式以評估山崩災害事件發生時,保全對象可能暴露於潛在災害環境中之受害機率,提供政府防災規劃時之參考實屬必要。 本研究運用基因演算法自動演化類神經網路技術輔以紋理分析技術應用於高解析度衛星影像之判釋分類,藉以獲取地表資訊與災害記錄資料,並利用多變量不安定指數建置山崩災害潛感模式。本研究考量之山崩災害潛勢因子包括「坡度」、「坡向」、「地質」、「高程」、「距斷層距離」、「距水系距離」、「地形粗糙度」、「坡度粗糙度」、「有效累積雨量」與「開發情形」等10項因子,並透過相關性檢定將檢定各潛勢因子間之相關程度。研究中以莫拉克颱風前後之衛星影像,運用影像相減法及常態化植生指數獲取災害資訊,並採用對數常態分配,進行山崩災害發生機率之計算。本研究藉由現地調查以及與當地里長進行訪談,透過相關文獻回顧後,設定出保全對象之受害機率條件,並推算出研究區域內之空間衝擊、時間衝擊、易致災性、耐災程度與人口暴露量之機率,配合山崩災害潛感模式所推算之山崩災害發生機率,統合發展山崩災害風險評估模式,並結合地理資訊系統繪製區域風險圖。 研究結果顯示,本研究所推估之山崩災害潛感模式結果經與土石流防災資訊網站上所提供之全台重大土石災情報告大致相吻合,可知本研究所建置之山崩災害潛感模式應具有相當可信度。此外,由風險圖結果得知,研究區域內之高風險地帶多集中於六龜區寶來里與桃源區建山里之交界處。因此管理單位應針對高風險地帶進行相關防災措施之擬定,以達到減災之目的。

並列摘要


In recent years due to technological and economic development the original plain area in Taiwan has been nearly fully developed, and human development has extended down to the hillside area. Human development coupled with the global impact of extreme weather, typhoons and heavy rains caused the hillside disaster. The scope and impact extent of the damage are more serious than ever before. For this reason, the establishment of a risk assessment model to assess landslide hazard event is essential to disaster prevention. In this study, the Genetic Adaptive Neural Network was implemented in high-resolution texture analysis techniques for the interpretation of satellite images of the sub-categories and to obtain surface information and hazard log data, and multivariate instability index to build landslide disaster latent sense of pattern. Ten landslide hazard potential factors are included: slope, geology, elevation, distance from the fault, distance from water, terrain roughness, slope roughness, effective accumulated rainfall, and developing situation. The potential degree of correlation between factors was tested through the correlation test. To study satellite images before and after typhoon Morakot, the image subtraction and normalized vegetation are used to calculate index for disaster information and logarithmic normal distribution, the probability of landslide disasters. A long interview with the local residents, review of the relevant literature, and setting out the conditions for the preservation of objects of the probability of victimization were carried out to calculate the spatiotemporal impact of the study area, vulnerable area to flooding and resistance level of disaster probability of exposure of the population. The regional risk map was plotted with the help of geographic information system and the landslide hazard risk assessment model. The results show that the landslide disaster predicted by this study is consistent with the information provided on the website of Soil and Water Conservation Bureau. From the risk map, the high-risk zone is concentrated in the junction of Taoyuan and Bora in Liouguei area. Therefore, the management authority should propose countermeasures for this area to achieve mitigation purposes.

參考文獻


46.蔡光榮、陳昆廷、謝正倫(2010),「太麻里溪與知本溪二流域土砂災害因子之量化評估分析研究」,水保技術,第5卷,第1期,頁49-57。
20.陳文福,李毅宏,吳輝龍(2005),「結合地文與降雨條件以判定土石流發生之研究-以陳有蘭溪集水區為例」,台灣地理資訊學刊,第2期,頁27-44。
12.林妙雀、酈芃羽(2004),「影響消費者對零售通路商店形象因素之研究-以基因演算法最佳化類神經網路模式加以驗證」,運籌研究集刊,第6期,頁80-97。
16.Hooman Latifi, Djafar Oladi (2002), “Evaluating Landsat ETM+ Data Capability to Produce Forest Cover Type Maps in the Timberline of Northern Forests of Iran.lnk, ” TaiwanJ, For Sci, 21(3), pp. 363-375.
22.Ko Ko C., P., Flentje & R., Chowdhury (2004), “Genetic Programming for Classification of Remote Sensing Data, ” Taiwan, For Sci, 13(2), pp. 109-118.

被引用紀錄


游佳靜(2015)。最佳數值搜尋原理應用於降雨誘發之山崩潛勢評估〔碩士論文,長榮大學〕。華藝線上圖書館。https://doi.org/10.6833%2fCJCU.2015.00189
黃孟璇(2015)。降雨誘發之坡地崩塌潛勢評估〔碩士論文,長榮大學〕。華藝線上圖書館。https://doi.org/10.6833%2fCJCU.2015.00052
何宇麗(2014)。降雨誘發山崩潛勢與崩塌分佈之研究〔碩士論文,長榮大學〕。華藝線上圖書館。https://doi.org/10.6833%2fCJCU.2014.00124
張雲岳(2013)。現地沖蝕釘試驗應用於集水區降雨影響土壤沖蝕之探討〔碩士論文,長榮大學〕。華藝線上圖書館。https://doi.org/10.6833%2fCJCU.2013.00204
買婉如(2013)。降雨誘發土砂災害損失評估模式之建置〔碩士論文,長榮大學〕。華藝線上圖書館。https://doi.org/10.6833%2fCJCU.2013.00203

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