俄罗斯陆架的矿产资源

面积达６００多万平方千米的俄罗斯广阔陆架 ,无论从研究、开发还是经济利用观点出发 ,都是一个具有特殊意义的对象。正因为如此 ,在２０世纪后半期采用不同的地球物理钻探方法对陆架区展开了规模性的研究工作 ,发现了巨大的烃类矿藏及其它矿产资源。最近１０年来 ,由于经济原因 ,海洋考察工作大大地缩减了 ,但是陆架研究工作还在继续进行。目前俄罗斯科学院正在进行海洋“陆架”课题的研究工作 ,并综合了现有的资料 ,正在编制“俄罗斯陆架地质和矿产”图册专集。现将陆架区某些主要矿产资源作一简单介绍。１烃类资源１９９１年原苏联分裂之…     

一种新的波浪变形三维数值模式──0-1混合型边界元

为提高边界元法模拟三维波场波浪变形的数值计算精度,借鉴常数元和线性元剖分方式、波势函数及波势函数法向导数对单元节点设定的各自适应性,提出了一种新的单元剖分模式──0-1混合型边界元,以控制和减缓由于计算误差累计而造成的波浪数值计算上的“横向振动”,借此结合边界元法的分区模式可实现较大范围的波场线性波浪变形计算,并为时域内的波浪非线性变形计算提供时间步长的数值保证.     

渤海三维海洋温度和海流数值预报

"十·五"期间,我国开展了三维海洋温度和海流数值预报的业务化研究工作.经过3年的努力,渤海三维海洋温度和海流数值预报系统研制完成,并于2003年10月,开始试预报.本文对该预报系统以及运行情况进行了介绍,并分析了所存在的问题和发展方向.     

他是国内海蓬子产业化种植第一人 让中国海水蔬菜步入国际市场第一人——“海疯子”的“海上农场”

出于对海蓬子的痴迷，张春银的夫人封给他“海疯子”这个“昵称”。而在张春银看来，如果没有这种热情和冲动，海水蔬菜产业化则只是纸上谈兵，也正是凭着这份热情，我国江苏东部广袤而荒凉的盐碱地上，一个真正意义上的“海上农场”正渐渐浮出水面。     

中国鱼类名录ⅩⅢ——鲽形目、纯形目、海蛾鱼目、鮟鱇目

鲽形目3亚目8科51属142种。鲀形目2亚目9科57属143种。海蛾鱼目1科2属3种，鮟鱇目3亚目11科23属41种。     

海底甲烷逸出处碳酸盐结核的形成

在库页岛东北岛坡出现甲烷水合物的地方，发现碳酸盐结核。提出了碳酸盐结核化学形成硫酸盐还原与甲烷生成作用使孔隙水呈现高碱性，是查出产生结核的必要预备阶段。借助甲烷将溶解于孔隙水中的二氧化碳气体排出，是形成结核的必须条件。     

Photoinduced toxicity single and binary mixtures of four polycyclic aromatic hydrocarbons to the marine diatom Skeletonema costatum

Diatom Skeletonema costatum Cleve is one of the main predominant phytoplankton species in the Changjiang Estuary in China. In order to provide some basic information for future assessment of the potential risk on phytoplankton communities in this estuary caused by polycyclic aromatic hydrocarbons(PAHs), this alga was selected as a representative to investigate the photoinduced toxicity of PAHs, in single and mixture. Four PAHs including three-ring phenanthrene and anthracene, four-ring fluoranthene and pyrene were tested in the laboratory. The single toxicity of each PAH on this microalga was compared with and without the simulated solar UV radiation. The results showed that this microalga was sensitive to PAH's photoinduced toxicity. Ratios of the 72 h median effect concentration obtained for fluorescent and UV light tests were about 8.4 for phenanthrene, 13.0 for anthracene, 6.5 for fluoranthene, and 5.7 for pyrene, indicating that UV light enhanced the PAH toxicity to this alga significantly. Under the fluorescent radiation (lacking UV), the dose-response curves based on chemical concentrations revealed that the order of toxic strength was fluoranthene greater than pyrene greater than anthracene greater than phenanthrene; while under the UV radiation (476 μW/cm2 for UVA, 6.5 μW/cm2 for UVB) it became fluoranthene approximately equaling anthracene greater than pyrene greater than phenanthrene, indicating that the UV light also changed its relative toxicity to this alga. The photoinduced toxicity of PAHs to the marine diatom S. costatum might be a synergistic effect of photosensitization reactions (e.g., generation of single-state oxygen) and photomodification (photooxidation and/or photolysis).The combined effects of six binary mixtures on the marine diatom S. costatum were investigated using the additive-index method. Four binary-mixtures (phenanthrene plus anthracene; phenanthrene plus pyrene; anthracene plus fluoranthene; anthracene plus pyrene) were found to be synergistic joint action mode, while two binary-mixtures (phenanthrene plus fluoranthene; fluoranthene plus pyrene) displayed antagonist, revealing a complex pattern of possible interactions. The combined action mode of PAHs might be related to various factors such as the mixture compounds, mixture ratios and test conditions, etc.     

辐射沙洲南翼“水道-沙洲”系统与西太阳沙的稳定

通过对江苏岸外辐射沙洲动态和西太阳沙海域动力泥沙环境的分析,论述了西太阳沙演变的宏观背景;由实测固定断面资料、地形资料的对比得出近40年来西太阳沙表面形态和水下地形的变化;结合西太阳沙表面泥沙在波浪和波流共同作用下运动特性的水槽试验研究,分析了西太阳沙冲淤变化的动力机制。从“烂沙洋水道-西太阳沙-西太阳沙南水道”系统的角度研究了西太阳沙演变的控制因素和演变规律。     

Application of LICOM to the numerical study of the water exchangebetween the South China Sea and its adjacent oceans

1 IntroductionThe South China Sea (SCS) is the largestmarginal sea in the western Pacific (see Fig. 1). It con-nects with the SCS through the Taiwan Strait, with thePacific through the Luzon Strait, with the Sulu Seathrough the Mindoro and Balabac Straits and with theJava Sea and Andaman Sea through the Sunda Shelf(For convenience, here we refer to the section at 1.5°N,Fig. 2). It is shown that the seasonal SCS circulation ismostly affected by the summer/winter monsoon, andthe no…