杭州湾北岸张家厍潮滩动态系统的频谱分析   总被引：3，自引：0，他引：3  

章可奇  金庆祥  王宝灿 《海洋与湖沼》1994,25(4):446-451

应用ＡＲ谱和多维最大熵谱方法分析了杭州湾北岸张家厍潮滩的波浪，潮流及潮滩面高程数据。结果表明，潮滩的变动和潮流，波浪变化的关系十分密切，潮滩面高程具有３０，１５，２－５ｄ的周期变化；冬春季节潮滩变化以潮流作用造成的低频变化为主，夏秋季节则由低频向高频转移，波浪引起的潮滩高频变化也很显著；低潮滩到中潮滩下部的冲淤变化与潮流作用关系密切，中潮滩上部，高潮滩的冲淤变化对常浪性质的波浪作用具有明显的响应。  相似文献   

SEASONAL CHANGES OF THE TIDAL FLAT FROM JINHUIGANG TO CAOJING ALONG THE NORTH BANK OF HANGZHOU BAY     

章可奇  金庆祥  王宝灿 《中国海洋湖沼学报》1993,11(4):321-332

This paper deals with the seasonal changes of the tidal flat along the north bank of Hangzhou Bay. Analysis of a one year set of weekly measured tidal flat profiles from Jinhuigang to Caojing shows that the tidal flat on the north bank of Hangzhou Bay accretes during winter and erodes during summer. To identify the characteristic patterns of the tidal flat spatio-temporal variations, Empirical Orthogonal Function (EOF) is applied on the tidal flat profile data. The results show that most of the variations of the tidal flat profiles can be represented by three eigenfunctions corresponding to the three largest eigenvalues. The first eigenfunction represents the long-term variation of the tidal flat over a year, the second eigenfunction represents the seasonal changes of the tidal flat resulting from the seasonal variations in wave regime, the third eigenfunction indicates sediment exchanges between different parts of the tidal flat associated with the variations of sea level.  相似文献   

论现代地理学对象、内容、结构和基本方法   总被引：1，自引：0，他引：1  

王铮  丁金宏  章可奇  沈建法  吴必虎 《地理研究》1991,10(3):68-77

本文从地理学对象及其性质的讨论出发,详细阐述了地理学内容、结构和它的基本方法。  相似文献