蓬莱近岸非潮汐水位波动  

NONTIDAL FLUCTUATION OF THE SEA LEVEL IN PENGLAI COASTAL AREA

作　　者：刘赞沛[1] 陈则实[1] 鄢利农[1] 邹娥梅[1] 

机构地区：[1]国家海洋局第一海洋研究所,青岛266061

出　　处：《海洋与湖沼》2001年第4期363-370,共8页Oceanologia Et Limnologia Sinica

基　　金：国家自然基金资助项目 4 96762 81号; 山东省科委科技计划专项合同967第 4 0号

摘　　要：根据 1 984— 1 993年蓬莱验潮站水位自记曲线资料 ,考察了该站的非潮汐水位波动。资料分析表明 ,这种非潮汐水位波动是本区的一种较为经常的现象 ,且有较大的波高 ,最大可达 1 2 4cm ,超过当天半日潮潮差 (1 0 7cm)。它们主要包含 3个频段的水位波动 ,周期分别为8— 1 2、2 0— 30和 60— 1 2 0min。本研究主要揭示这些水位波动的特征和性质 ,特别是由此而产生的假潮。同时 ,通过对相关场资料的分析 ,揭示了引起这种较大振幅水位波动的主要原因。The nontidal fluctuation of sea level at Penglai tidal observatory is studied by using the 1984—1993 data of sea level curve of automatic tide gauge. Analysis of the data shows that such fluctuations of sea level often occur at this region. They have a large wave highes and the largest value can reach 124cm which exceeds the tidal range of semi-diurnal tide (107cm) on the same day. They maimly involve fluctuations of three frequency bands. Their cycles are 8—12,20—30 and 60—120min, respectively. The nature of the above mentional fluctuations of sea level are described in this paper, particularly seiches caused by them. Meanwhile, by an analysis of the factors giving rise to the fluctuation of sea level the main cause of the larger amplitude fluctuations of sea level is identified.

关 键 词：自然周期 假潮 非潮汐水位波动 风 气压 水位波动谱 

分 类 号：P731.2[天文地球—海洋科学]