Medium-Term Beach Profile Change on a Bar-Trough Region at Hasaki, Japan, Investigated with Complex Principal Component Analysis
Medium-Term Beach Profile Change on a Bar-Trough Region at Hasaki, Japan, Investigated with Complex Principal Component Analysis
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通过复杂主成分分析研究日本波崎坝槽区域的中期海滩剖面变化
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
Jae Hyeng Lee
中科院分区：
文献类型：
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作者：
Y. Kuriyama;Jae Hyeng Lee
复主成分分析（CPCA）应用于海滩剖面数据，在日本，研究形态变化的一个禁止海滩。第一个特征函数主要代表一个以年为周期的向海沙坝顶迁移，第二个特征函数则代表一个堆积区以几年为周期的向岸迁移和几个月为周期的向岸迁移的组合。第三个特征函数代表前滨主要的海滩剖面变化。基于第一和第三模态的海滩过程与入射波能通量有较强的相关性，而基于第二模态的过程与入射波能通量无相关性。将CPCA的结果与传统主成分分析的结果进行了比较。
Complex principal component analysis (CPCA) was applied to beach profile data at Hasaki, Japan, to investigate morphological change on a barred beach. The first eigenfunction mainly represents a seaward bar crest migration with a period of a year, while the second one provides the combination of the shoreward migration of an accumulated area with a period of several years and that with a period of several months. The third eigenfunction represents the beach profile change predominant in the foreshore. The beach processes based on the first and the third modes have strong correlation with the incident wave energy flux although the process based on the second mode does not. The results of CPCA were compared with those of conventional principal component analysis.