| CLUSTERING ANALYSIS OF DEBRIS-FLOW STREAMS |
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| 引用本文： | Yuan-FanTSAI Huai-KuangTSAI Cheng-YanKAO. CLUSTERING ANALYSIS OF DEBRIS-FLOW STREAMS[J]. 国际泥沙研究, 2004, 19(1): 37-46 |
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| 作者姓名： | Yuan-FanTSAI Huai-KuangTSAI Cheng-YanKAO |
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| 作者单位： | [1]AssistantProfessorofDept.ofSocialStudiesEducation,NationalTaipeiTeachersCollege,Taipei106,Taiwan [2]PostdoctoralfellowofComputerScienceandInformationEngineering,NationalTaiwanUniversity,Taipei,Taiwan [3]ProfessorofComputerScienceandInformationEngineering,NationalTaiwanUniversity,Taipei,Taiwan |
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| 摘 要： | The Chi-Chi earthquake in 1999 caused disastrous landslides, which triggered numerous debris flows and killed hundreds of people, A critical rainfall intensity line for each debris-flow stream is studied to prevent such a disaster. However, setting rainfall lines from incomplete data is difficult, so this study considered eight critical factors to group streams, such that streams within a cluster have similar rainfall lines. A genetic algorithm is applied to group 377 debris-flow streams selected from the center of an area affected by the Chi-Chi earthquake, These streams are grouped into seven clusters with different characteristics, The results reveal that the proposed method effectively groups debris-flow streams.
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| 关 键 词： | 聚类分析 河流 地震 泥石流 统计学 |
CLUSTERING ANALYSIS OF DEBRIS-FLOW STREAMS |
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| Yuan-Fan TSAI,Huai-Kuang TSAI,Cheng-Yan KAO. CLUSTERING ANALYSIS OF DEBRIS-FLOW STREAMS[J]. International Journal of Sediment Research, 2004, 19(1): 37-46 |
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| Authors: | Yuan-Fan TSAI Huai-Kuang TSAI Cheng-Yan KAO |
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| Abstract: | The Chi-Chi earthquake in 1999 caused disastrous landslides, which triggered numerous debris flows and killed hundreds of people. A critical rainfall intensity line for each debris-flow stream is studied to prevent such a disaster. However, setting rainfall lines from incomplete data is difficult, so this study considered eight critical factors to group streams, such that streams within a cluster have similar rainfall lines. A genetic algorithm is applied to group 377 debris-flow streams selected from the center of an area affected by the Chi-Chi earthquake. These streams are grouped into seven clusters with different characteristics. The results reveal that the proposed method effectively groups debris-flow streams. |
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| Keywords: | Debris flow Genetic algorithm hierarchical clustering The Chi-Chi earthquake |
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