发生在东海近海与Elnino现象有关海洋污染若干典型个例

探讨Ｅｌｎｉｎｏ不同类型赤潮成因和对湄洲湾油污现象进行一些讨论 。     

钱塘江河口年最高潮位的随机特性

在海塘建设和工程设计中,将年最高潮位系列视为服从某一确定分布的随机变量,并以此为基础为海塘等工程建设提供设计参数。为确证年最高潮位不具有非随机特性,并提高频率分析法推求设计值的可信度,采用序列自相关系数、序列秩号相关系数、序列秩号和、序列秩号与序号的相关系数、序列游程数和序列转折点数等6种非参数假设检验的方法,分析了钱塘江河口8个水位站的年最高潮位系列的随机特性。实例分析的结果表明,提供的假设检验方法对分析水文时间序列的一致性具有实用意义。     

东中国海潮余流自适应数值模拟

以自适应数值模型首次计算整个东中国海三维 M2 分潮潮致 Euler余流、Stokes漂流和L agrange余流 ,并分析各海区 L agrange余流的特征。渤海 M2 分潮致 L agrange余流在整个海域基本形成一个大的逆时针环流系统 ;辽东湾有一个逆时针流环。在黄海 ,潮致余流也是黄海环流的重要组成部分。在东海的东北部 ,潮致余流有强化对马暖流的作用 ;在台湾北部海域 ,潮余流对台湾暖流有强化作用。在近海海域 ,由于复杂地形的作用 ,潮流非线性作用加强 ,潮余流的量值有较明显的增加。计算结果表明 :在浅水区域 ,Stokes漂流较大 ,Euler余流与 Lagrange余流差别显著     

青岛山地磁日变站资料的分析与研究

本文根据1990年8至9月青岛山地磁日变观测资料的分析研究,认为青岛山地磁日变站所获资料反映了磁日变的变化规律,资料是可靠的,为胶州湾海区磁测工作提供了可信的日变改正数据.     

数据融合技术在多源潮汐数据分析中的应用

为了充分利用现有潮汐数据以建立高精度的潮汐分析模型，在利用最小二乘法进行潮汐分析的基础上，将数据融合技术应用于具有多源潮汐数据的分析，提出潮汐数据的分类方法，建立了三种潮汐数据融合方案，推导了各种方案的数据融合公式，并分析了各种方案的特点及适用范围。     

Influence of the Kuroshio Fluctuations on Sea Level Variations along the South Coast of Japan

The correlation between the Kuroshio and coastal sea level south of Japan has been examined using the altimetry and tide gauge data during the period 1992–2000. The sea level varies uniformly in a region bounded by the coast and the mean Kuroshio axis, which stretches for several hundred kilometers along the coast. These variations are related with the Kuroshio velocity, as coastal sea level decreases (or increases) when the Kuroshio is faster (or slower). To the east of the Kii Peninsula, where sea level variations are different from these to the west, movement of the Kuroshio axis additionally affects coastal sea level variations.     

Physical forcing of onshore transport of crab megalopae in the northern Portuguese upwelling system

Wind-driven circulation is a mechanism that may be involved in the shoreward transport of invertebrate larvae. This study investigated the temporal variability of the supply of crab megalopae to an estuary located in the northwest coast of Portugal, which is affected by seasonal upwelling, and related variations in supply to several upwelling indices. Megalopae of the European common shore crab Carcinus maenas (L.). were collected daily, using artificial settlement substrates, during a 3-month period, from March 15 to June 15, 2000. Two settlement episodes were detected, which were consistent with the variation in abundance and size of juvenile crabs. Variations in subtidal sea level and sea surface temperature anomaly were correlated with the strength of along-shore wind stress and consistent with upwelling theory. Contingency analyses showed positive significant associations between increasing intensity of southerly winds and megalopal supply, for time lags of 0–6 d, indicating that shoreward transport occurred during relaxation or reversal of upwelling favourable winds. Associations between megalopal supply and tidal range or the duration of nocturnal flood were not detected. Compared to other studies of the supply of crab megalopae to coastal habitats that used a similar methodology, very low numbers of megalopae were collected during this study. The paucity of C. maenas megalopae in the Ria de Aveiro is in agreement with the low densities of this larval stage in the plankton, and indicates that maintenance of the population is achieved despite a low supply of megalopae.     

Progress in Seto Inland Sea Research

The Seto Inland Sea is a representative coastal sea in Japan with a complicated geometry and thus a variety of marine environments. This sea is, at the same time, one of the most industrialized areas in Japan, and its marine environment has been significantly affected by the anthropogenic impacts over the last four decades. The wide range of marine environments in this sea and the serious environmental issues resulting from these impacts have attracted the attention of Japanese coastal oceanographers. It is believed that the nature and scope of these studies might be an example of the progress of Japanese coastal oceanography. The historical changes in the Seto Inland Sea environment in the last four decades are briefly summarized, and the progress in the studies of the Seto Inland Sea is reviewed with reference to historical changes. Some recent research topics and activities are also mentioned. This revised version was published online in August 2006 with corrections to the Cover Date.