Discussion on Coastal Erosion Near Xizhuang, Penglai, China   总被引：1，自引：0，他引：1  

Wu Guiqiu Li Wei Professor  First Institute of Oceanography  State Oceanic Administration  Qingdao Associate Researcher 《中国海洋工程》1994,(2)

-In this work, on the basis of the characteristics of coastal erosion near Xizhuang (Penglai, Shandong, China) and the in-situ measured data and theoretical calculation, the causes of coastal erosion there are obtained: (1) natural erosion, (2) beach sand borrowing, and (3) sand borrowing at the Dengzhou shoal near Xizhuang, which results in the loss of the function of the wave force resistance of the shoal. Since the wave energy is increased, the longshore sediment transport rate is increased. Coastal erosions are more and more serious. A scientific basis to reduced the calamity of coastal erosion in local area is presented. Some experiences are accumulated for studying coastal erosion.  相似文献   

Microbial degradation of chemically dispersed crude oil in marine enclesure ecosystem Ⅰ.Comparisons of different nutrients at low level primary productivity     

Cai Ziping  Wu Jiping 《海洋学报(英文版)》1994,13(2):305-309

Ｍｉｃｒｏｂｉａｌｄｅｇｒａｄａｔｉｏｎｏｆｃｈｅｍｉｃａｌｌｙｄｉｓｐｅｒｓｅｄｃｒｕｄｅｏｉｌｉｎｍａｒｉｎｅｅｎｃｌｅｓｕｒｅｅｃｏｓｙｓｔｅｍ—Ⅰ．Ｃｏｍｐａｒｉｓｏｎｓｏｆｄｉｆｆｅｒｅｎｔｎｕｔｒｉｅｎｔｓａｔｌｏｗｌｅｖｅｌｐｒｉｍａｒ...  相似文献   

温州市绘就水产品发展蓝图     

吴奕 《海洋信息》2001,(3)

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The evolution of the coral reefs in the middle and north parts of the South China Sea and its relation with tectonic and eustatic movements     

Geng Xiushan  Fu Mingzuo  Wu Baoling 《海洋学报(英文版)》1990,9(2):283-292

In this paper, the morphogenesis, stratigraphic sequences and dates of the coral reefs in the middle and north parts of the South China Sea are discussed, the position of the distributary regions of Cenozoic coral reefs in plate tectonics, the relationships of coral-reef evolutionary characteristics and dates with sea-basin spreading. Neogene sea-water transgression and Quaternary global climate-eustatic fluctuation are expounded and proved, and the latitudinal variation of the distribution of coral reefs in various geologic times are summed up.  相似文献   

西沙群岛及其附近海域多毛类动物地理学的研究   总被引：5，自引：1，他引：5  

吴宝铃  孙瑞平  陈木 《海洋学报》1980,2(1):111-130

西沙群岛及其附近海域蕴藏着极其丰富的水产资源,是我国的良好渔场之一,自古以来就是我国渔民的渔捞基地.解放以来,在党的领导下,对我国神圣领土西沙群岛进行了大规模的开发和建设.中国科学院海洋研究所和中国科学院南海海洋研究所等单位,进行了多次海洋生物资源调查,我们曾报告过113种浮游和底栖多毛类.根据1975-1976年补充调查的标本,又发现了过去未报告过的多毛类70种,截至目前西沙群岛及其附近海域的多毛类共有183种.本文根据现在掌握的资料对我国西沙群岛及其附近海域多毛类动物地理学做一初步分析.  相似文献   

几种药物治疗对虾聚缩虫病试验     

高爱根  吴友吕 《海洋学研究》1992,10(1):64-67

本文报道了1990年在平湖对虾养殖场用几种药物治疗聚缩虫病所做的试验。结果表明,高锰酸钾和新洁尔灭的疗效较为显著。  相似文献   

A new efficient 3D non-hydrostatic free-surface flow model for simulating water wave motions     

Doo Yong Choi  Chin H. Wu   《Ocean Engineering》2006,33(5-6):587-609

A new three-dimensional, non-hydrostatic free surface flow model is presented. For simulating water wave motions over uneven bottoms, the model employs an explicit project method on a Cartesian the staggered gird system to solve the complete three-dimensional Navier–Stokes equations. A bi-conjugated gradient method with a pre-conditioning procedure is used to solve the resulting matrix system. The model is capable of resolving non-hydrostatic pressure by incorporating the integral method of the top-layer pressure treatment, and predicting wave propagation and interaction over irregular bottom by including a partial bottom-cell treatment. Four examples of surface wave propagation are used to demonstrate the capability of the model. Using a small of vertical layers (e.g. 2–3 layers), it is shown that the model could effectively and accurately resolve wave shoaling, non-linearity, dispersion, fission, refraction, and diffraction phenomena.  相似文献   

On the radiation and diffraction of linear water waves by an infinitely long rectangular structure submerged in oblique seas   总被引：1，自引：0，他引：1  

Y.H. Zheng  P.F. Liu  Y.M. Shen  B.J. Wu  S.W. Sheng 《Ocean Engineering》2007,34(3-4):436-450

The radiation and diffraction of linear water waves by an infinitely long rectangular structure submerged in oblique seas of finite depth is investigated. The analytical expressions for the radiated and diffracted potentials are derived as infinite series by use of the method of separation of variables. The unknown coefficients in the series are determined by the eigenfunction expansion matching method. The expressions for wave forces, hydrodynamic coefficients and reflection and transmission coefficients are given and verified by the boundary element method. Using the present analytical solution, the hydrodynamic influences of the angle of incidence, the submergence, the width and the thickness of the structure on the wave forces, hydrodynamic coefficients, and reflection and transmission coefficients are discussed in detail.  相似文献   

Second-order resonance of sloshing in a tank     

G.X. Wu   《Ocean Engineering》2007,34(17-18):2345-2349

Sloshing in a two-dimensional rectangular tank in horizontal motion is analysed based on the velocity potential theory. It is found that even when the first-order excitation is away from all the natural frequencies of the tank, second-order resonance can still occur when the sum-frequency or the difference-frequency is equal to one of the natural frequencies corresponding to the even mode. However, such resonance is not excited when the sum or difference frequency is equal to the natural frequency of an odd mode.  相似文献   

台湾海峡台风暴潮非线性数值计算   总被引：2，自引：1，他引：2  

吴培木  许永水  李燕初  陈玉霞  陈季良 《海洋学报》1981,3(1):28-43

台湾海峡平均水深不大于50米,台风侵袭频繁.由于台湾岛的“墙壁效应”和台湾海峡的“狭管效应”的影响,台湾海峡的台风暴潮显得较为独特.以前,我们及其他兄弟单位对福建沿海台风暴潮的研究,大多数仅局限于单站的气-水动力相互作用的研究,很少涉及整个海峡.虽说我们也曾作过福建沿岸台风暴潮现场调查,但进行次数有限,了解的也仅是海峡西岸局部地区的情况,它仅能反映台湾海峡台风暴潮的一个侧面,而无法了解整个海峡地区的风暴潮全貌.  相似文献