Landslide, slope failure, Timor-Leste, Multivariate Statistical Analysis

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ACTUAL CONDITION AND CHARACTERISTICS OF SLOPE FAILURE IN EAST TIMOR BY MULTIVARIATE STATISTICAL ANALYSIS By: 05KC051 Lourenco Soares A thesis submitted to Department of Civil and Environmental Engineering, Saitama University, Japan for the Requirements of Master’s Degree August 2007 Supervisor
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  ACTUAL CONDITION AND CHARACTERISTICS OF SLOPEFAILURE IN EAST TIMOR BY MULTIVARIATESTATISTICAL ANALYSISBy:05KC051Lourenco SoaresA thesis submitted to Department of Civil and EnvironmentalEngineering, Saitama University, Japan for the Requirements of Master’s DegreeAugust 2007 SupervisorProfessor Hidehiko KAZAMA   Department of Civil and Environmental EngineeringGraduate School of Science and EngineeringSaitama University, JAPAN    i ACKNOWLEDGEMENT  At the outset, it is my duty to acknowledge with gratitude the generous help that Ihave received from my advisor, Professor Hidehiko KAZAMA. He is responsible forinvolving me in this master’s course in the first place. He taught me how to ask questions andexpress my ideas. He showed me different ways to approach a research problem and the needto be persistent to accomplish any goal. I also thank Mrs. Yumiko SHIRO and Mr. MasatoIWAMA for their strong support in making me acquainted with Japanese life style in the pasttwo years. I expresses with my deepest, heart felt gratitude to Mr. Kobayashi for beinghelpful person.Besides my advisor, I would like to thank the rest of my thesis committee: ProfessorKunio Watanabe and Assoc. Professor M. Osada, who asked me good questions, gaveinsightful comments and reviewed my work on a very short notice. And most of all I wouldlike to express my heart felt thanks to all staffs in Geosphere Research Institute of SaitamaUniversity (GRIS) which have direct and indirect value for finalizing this thesis.I would like to pass my great respect and Special thanks to Japan InternationalCooperation Agency (JICA) and Japan International Cooperation Center (JICE) for theirsupport in funding my tuition and living expenses through out my stay in Japan to pursue theMaster program in Saitama University, Japan smoothly. Especially, I would like to expressmy heart felt thanks to Mr. Mizuki MATSUZAKI, Ms. Yuri OSAWA, Mrs. WATANABEand Ms. Sayaka OSHIMI for their strong support, advice, suggestions, encouragement andtheir kindness cooperation for helping me in every aspect of my study and my life in Japan.Last, but not least, I thank my family (Amain sayang , Maun Du, Ina Noi, Alin Eqi),the late my father”† Salvador Soares” and my mother “ Andreza Soares, for giving me life inthe first place, for educating me with aspects from both arts and sciences, for unconditionalsupport and encouragement to pursue my interests, even when the interests went beyondboundaries of language, field and geography. My brothers (Maun Domingos, Enty, Rito,Abes and Aje) and friends: for sharing experience of life and dissertation to me, for listeningto my complaints and frustrations, and for believing in me, most of all supporting.  ii CONTENTS AcknowledgementContentsList of figuresList of tablesAbstractCHAPTER IIntroduction 1.1 Background of study ………………………………………………….. 11.2 Propose and scope of the study ……………………………………….. 21.3 Data collection and methodology of research ………………………... 4 CHAPTER IIStudy Site Description and Literature review 2.1 Study site description ………………………………………………… 92.1.1 Geographical condition, location, and boundaries of study site.. 92.1.2 Topography ……………………………………………………. 132.1.3 Geology, landforms and soil ………………………………….. 142.1.4 Climate ………………………………………………………… 192.1.5 Vegetation ……… …………………………………………….. 242.2 Literature review ……………………………………………………… 31 CHAPTER IIIActual Condition, Characteristics and Distribution of Slope Failure in East Timor 3.1 Introduction ……………………………………………………………. 363.2 Characteristics and distribution of slope failure in East Timor ……….. 403.2.1 Lithology ……………………………………………………… 413.2.2 Vegetation …….. ……………………………………………… 443.2.3 Inclination angle of slope ………………………………………. 46  iii3.2.4 Direction of slope ……………………………………………… 493.2.5 Landscape topography ………………………………………… 513.2.6 Elevation ………………………………………………………. 533.2.7 Slope width………. ……………………………………………. 543.2.8 Slope length …………………………………………………… 58 CHAPTER IVAnalyzing Method 4.1 Logistic regression analysis …………………………………………… 634.2 Independent variables and sampling …………………………………. 674.3 GIS application for slope failure mapping …………………………….. 70 CHAPTER VAnalysis Result 5.1 Introduction ……………………………………………………………. 725.2 All study site analysis result …………………………………………… 725.3 Specific site Analysis ………………………………………………….. 825.3.1 Bobonaro site …………………………………………………. 825.3.2 Cailaco site ……………………………………………………. 925.3.3 Zumalai site …………………………………………………… 100 CHAPTERConclussion and Future Subject 6.1 Conclusions…….…………………………………………………………. 1096.2 Future Subject ……………………………………………………………... 110 References ……………………………………………………………………. 111 APPENDIX A: Physical Data of Slope Failure and Unfailure slopeAPPENDIX B: Logistic Regression Analysis
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