台灣地區誘發山區大規模崩塌的兩大主因主要為颱風與地震，這二類型的崩塌地在野外的觀察上以及整理前人所做的各別研究裡，在邊坡的位置分布上似乎有所差異。本研究欲透過合理的研究過程，對這二類型的崩塌地進行比較。目的是希望能歸納出降雨型崩塌地與地震型崩塌地其發生的位置與主要的地形參數為何，並檢視這二種事件所誘發崩塌地的重要地形參數是否有顯著的差異。
本研究以陳有蘭溪流域為研究區，選定1996年7月31日至8月1日的賀伯颱風以及1999年9月21日的九二一地震這兩次事件進行比對。賀伯颱風後所新增的崩塌地則視為降雨型崩塌地；九二一地震後所新增的崩塌地則為地震型崩塌地。在新增崩塌地的判釋方面，是以事件前後的航照進行比對找出新增的崩塌地，判釋出來的崩塌地登錄成數值檔並加上屬性資料，以利之後進一步的統計分析。
資料分析結果得知，降雨型崩塌地與地震型崩塌地在地表地質、邊坡坡度、集流面積這三項因子有顯著的差異。降雨型崩塌地主要的邊坡影響因子為坡度、集流面積和迎風坡的坡向；地震型崩塌地主要的邊坡影響因子為地表地質、坡度和山脊的相對高度。最後以這些影響因子的閾值，繪製這兩類型崩塌地的潛在危險區圖，並進一步評估其潛在危險區的效度。

Rainfalls and Earthquakes are the most important landslide-inducing agents in Taiwan. This study intends to analyze the slope characteristics between landslides triggered by rainfalls and earthquakes.
By using GIS techniques, geomorphologic and geologic data were obtained by overlying aerial photos, maps and 40*40 DEMs. There are 217 new slope failures identified by aerial photos during Herb Typhoon and 229 seismic landslides during Chi-Chi Earthquake in study area.
The results show that (1) the density of seismic landslides varies with geologic characteristic─higher density in sedimentary than metamorphic areas, but the spatial distribution of rainfall-induced landslides does not have this kind of variation; (2) seismic landslides located at the slope angle between 390~450 and the contributing area below 1 ha.;(3) rainfall-induced landslides located at the slope angle between 300~410 and the contributing area above 1 ha. ; (4) the elevation and the aspect are not good slope characteristics to distinguish between rainfall-induced landslides and seismic landslides.

第一章 緒論……………………………………………………..………1
1-1前言………………………………………………………..…1
1-2研究動機與研究目的………………………………………...1
第二章 文獻回顧……………………………………………………..…2
2-1崩塌地的類別……………………………………………...…2
2-2地震型的崩塌地分析…………………………………...……5
2-3 降雨型的崩塌地分析……………….………………………11
第三章 研究方法………………………………………………………14
3-1研究架構與流程………………………………………..…14
3-2研究方法 …..…………………………………………….…15
3-2.1航空照片的搜集…………………………………………15
3-2.2崩塌地的判釋與數化……………………………………17
3-2.3數值地形資料的分析……………………………………18
3-2.4統計分析…………………………………………………18
第四章 研究事件與研究區基礎資料…………………………………20
4-1 研究事件………………………………………………...…20
4-2 研究區域……………………………………………..….…22
第五章 崩塌地分析與檢定……………………………………………25
5-1 崩塌地登錄……………………………………………….…25
5-2 崩塌地的基本地形、地質比較…………………….………28
5-2.1崩塌地地質因子的比較………………………..………28
5-2.2崩塌地基本地形因子的比較 …………………………30
5-3 降雨型崩塌地與坡向的關係………………………………38
5-4 地震型崩塌地與高程的關係………………………………38
第六章 崩塌地潛在危險區的劃設與評估……………………………45
6-1 降雨型崩塌地潛在危險區劃設與評估………………..… 45
6-2 地震型崩塌地潛在危險區劃設與評估……………………51
第七章 結論……..………………………………………………53
引用文獻……………………………………………………………..…55
附錄：崩塌地登錄表

行政院農業委員會 (2000) 崩塌地調查與治理規劃成果報告，3-1~3-35
李錫堤 (1999) 地震地變與防災，台灣區學校校舍耐震性能改善研討會分區講習共同資料，81~l17。
林美聆等 (1999) 陳有蘭溪流域土石流溪流地理資訊系統建立與土石流溪流特性分析，防災國家型科技計畫八十八年度成果報告。
林朝棨 (1957) 台灣地形，臺灣省文獻委員會。
林惠玲、陳正昌 (1990) 統計學二版(下) ，台北：雙葉書廊。
吳佐川 (1993) 台灣地區崩塌地區域特性之研究，國立臺灣大學森林學研究所碩士論文。
徐美玲 (1995a) A Grid-Based Model for Predicting Dynamic Soil Pore Pressure，國立臺灣大學理學院地理學報，18:1~21。
徐美玲 (1995b) 預測潛在岩屑滑崩的網格式數值地形模式，國立臺灣大學理學院地理學報，19 : 1~15。
陳信雄 (2001) 上課講義。
鄒恬慈 (2001) 集集地震引發崩山之地貌分析─以清水溪集水區為例，國立臺灣大學地理環境資源學研究所碩士論文。
張石角、姜善鑫、胡蘇澄、吳輝龍合編(1989) 台灣的崩山，水土保持教材林業特刊第二十四號，83~95。
劉進金、鄭文哲 (1983) 臺灣各種遙測系統及其在工程地質調查的應用潛力，礦冶，27(3):120~130。
廖日昇 (2000) 岩土力學與地震，台北：科技圖書股份有限公司。
Besenicar, J. (1982) Photointerpretion for land use planning, 1982 proceedings of ISPRS, 931-936
Bouchon, M. (1973) Effect of topography on surface motion, Bulletin of Seismological Society of America, 63(3): 615-632
Brunsden, D. (1973) The application of systems theory to the study of mass movement, Geologica Applicata e Idrogeologia., Univ. of Bari.,8(1):185-207
Brunsden, D. (1979) Landslide perspectives, In: landslides Geological Society of America, 3-28
Coates, D.R. (1977) Techniques for the morphometric analysis of landslips, Zeit. Geomorph. Cynamique, 17:78-101
Crozier, M. J.(1973) Techniques for the morphometric analysis of landslips, Zeit. Geomorph. Dynamique, 17:78-101
Crozier, M. J. (1986) Landslides: causes, consequences & environment
Davis, L. L. and West L. R. (1973) Observed Effect of topography on ground motion, Bulletin of Seismological Society of America, 63(1):283-298
Erskine, C. F.(1973) Landslides in the vicinity of the Fort Randall reservoir, S. Dakota. U. S. Geol. Survey Prof. Paper, 675:64
Fuchu, D. Lee, C. F. and Sijing, W. (1999) Analysis of rainstorm-induced slide-debris flows on natureal terrain of Lantau Island, Hong Kong, Engineering Geology, 51: 279-290
Geli, L., Bard, P.Y and Jullien, B.(1988) The Effect of topography on Earthquake ground motion: a review and new results, Bulletin of Seismological Society of America , 78(1): 42-63
Hansen, M.J. (1984) Strategies for classification of landslides, Slope instability, 1-25
Hutchinson, J.N. and Bhandari, R. K. (1971) Undrained loading─a fundamental mechanism of mudflows and other mass movements, Geotechnique, 21:353-358
Keefer, D.K.(1984) Landslides caused by earthquakes, Geol. Soc. Am. Bull, 95:406-421
Khair, K. R., Datta, S. K. and Shah, A. H (1989) Amplification of obliquely incident seismic waves by cylindrical alluvial valleys of arbitrary cross-sectional shape Part I .incident P and SV waves, Bulletin of Seismological Society of America , 79(3) :610-630
Ladd, G. E. (1935) Landslides, subsidences and rockfalls, Bull Am. Railway Eng. Ass., 37:1091-1162
Lin, M. L. and Jeng, F.S.(2000) Characteristics of hazards induced by extremely heavy rainfall in Central Taiwan─Tyhpoon Herb, Engineering Geology,58:191-207
Popov, I.V.(1946) A scheme for the natural classification of landslides, Doklady USSR Academy of Sciences, 54:157-159
Rengers, N. (1978) Engineering geological mapping from photos and other remote sensing images, 1978 proceedings of ISPRS, 1309-1329
Reiche, P. (1973) The Toreva Block; a distinctive landscape type, J. Geol., 45:538-548
Reynoles, S.H. (1932) Landslips, Proc. Bris. Nat. Soc., 7: 352-357
Rodriguez, C.F. Bommer, J.J. and Chandler, R.J.(1999) Earthquake-induced landslides:1980-1977, Soil Dynamics and Earthquake Engineering ,18:325-346
Savarenskii, P. F.(1937) Inzhenernaya geologiya, Moskva.
Sharpe, C. F. S. (1938) Landslides and Related Phenomena, Columbia Univ. Press, 137
Ŝpůrek, M.(1970) Retrospective analysis of climatic sliding agent, Sbor. Geol.věd, 7:61-79
Terzaghi, K. (1950) Mechanisms of landslides, Geol. Soc. Am., Berkey Volume: 83-123
Van Asch and Ven Beek (1999) A view of some hydrological triggering systems in landslides，Geomorphology , 30:25-32
Varnes (1978) Slope movements and types and processes, In: Landslides: Analysis and Control, Transportation Res. Board Nat. Ac. Sci., 176:11-33
Ward, W. H. (1945) The stability of natural slopes, Geog. J., 105:170-197
Zåruba, Q. and Mencl, V. (1969) Landslides and their Control, New York: Elsevier, 205
Zhang, C. and Zhao, H. (1988) Effects of canyon topography and geological conditions on strong ground motion, Earthquake Engineering and structural dynamics, 16:81-97
Zhao C. and Valliappan S. (1992) Effects of canyon topographic conditions on ground motion due to harmonic P and SV wave incidences, Earthquake Engineering，923-928