| A STATISTICAL STUDY ON RELATIONSHIP OF EL NINO EVENTS TO THE HYDROGRAPHY ALONG 137°E IN WINTER |
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| 引用本文： | 崔茂常,胡敦欣.A STATISTICAL STUDY ON RELATIONSHIP OF EL NINO EVENTS TO THE HYDROGRAPHY ALONG 137°E IN WINTER[J].中国海洋与湖沼学报,1991(2). |
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| 作者姓名： | 崔茂常 胡敦欣 |
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| 作者单位： | Institute of Oceanology,Academia Sinica,Qingdao,266071,Institute of Oceanology,Academia Sinica,Qingdao,266071 |
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| 摘 要： | Principal component analysis (PCA) as used by meteorologists and oceanographers is a powerful tool for analysis of the spatial and temporal variability of physical fields.This study was aimed at applying "quasi-local PCA for singular factor" to make the cumulative percentage for the first principal component as great as possible, so that a multi-dimensional problem can be reduced to a single-dimensional one, and then stepwise regression analysis can be used to parameterize the relationship between El Nino events and the hydrographic factor anomalies along 137 癊 in winter.The results show that the salinity anomalies on 30 m level, the sigmat on 250 m level, and the temperature on 300 m level at 8 癗 are most closely related with El Nino events because of thermocline movement caused by enhanced upwelling in this area during El Nino years.
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