| 刘玉邦,梁川.基于天气成因和主成分投影分析的暴雨洪水分级研究[J].水利学报,2011,42(1): |
| 基于天气成因和主成分投影分析的暴雨洪水分级研究 |
| Storm flooding grading based on cause andprincipal component projection analysis |
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| DOI： |
| 中文关键词: 暴雨洪水分级 成因 天气系统 主成分投影 聚类分析 |
| 英文关键词: storm flood grading cause the weather system Principal Component Projection clustering
analysis |
| 基金项目: |
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| 中文摘要: |
| 针对传统的多指标暴雨洪水分级方法的诸多不足，应用成因 （天气系统） 与聚类分析 （主成分投影） 相结合的系统方法对暴雨洪水进行分级，并通过分级指标的符号化处理对不同等级洪水的显著指标特征进行定量化描述，以此形成系统的暴雨洪水分级方法。实例研究结果表明，建议方法可行，物理意义明确，实现过程简便，但分级结果仍会受样本数有限的影响。虽然该方法是针对暴雨洪水提出的，但对非暴雨洪水的分级也不失为一种有效的尝试。 |
| 英文摘要: |
| Storm flood grading is important to storm flood disaster management，disaster assessment，fore?
casting and flood control design. In order to overcome the shortcomings of conventional multi-index comprehensive grading of storm flood，a systematic method combining the cause analysis（weather system）with clustering analysis（Principal Component Projection) is suggested and the classification index symbolic processing is applied. Case study results show that the proposed method is feasible，and it has clear physical meanings and easy to be used. Although this method is proposed for storm flooding grading，it is also a good attempt for non-storm flood grading. |
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