棉兰老涡旋的数值模拟     

李荣凤  曾庆存  季仲贞 《热带海洋学报》1991,(4)

用一个水平分辨率比较高的非线性正压模式,对热带西太平洋海域里的海流进行了数值模拟。计算海流与观测结果颇相一致。结果表明:赤道以北、棉兰老岛以东附近海域中,棉兰老冷涡在一年的大部分时间里都得到发展,但是其范围、强度和中心位置在各个月份并不相同,显示出很强的季节变化;在哈马黑拉岛东北海域,6月份突然出现了一个反气旋式的涡旋;这个涡旋8月份发展得最强,一直持续到10月份,在11月份就消亡了。  相似文献   

A three-dimentional model of the northeast East China Sea, with application to the M₂ current field     

Tang Yuxiang 《海洋学报(英文版)》1990,9(4):487-498

A simple three-dimensional tidal model is used to examine the M2 tidal current distribution in a northeastern part of the East China Sea, especially the vertical variation of the current in the region. Computed M2 current is compared with observations available and found to be in good agreement.Main features of the calculating method in this study are: (1) Vertical variation of the tidal current is taken as a funetion of the depth-mean velocity: (2) the method is applicable to a variety of the vertical eddy viscosities; (3) it has a fine vertical resolution, especially near the sea bootom. So, this method not only enables us to get a steady state solution easily but also depicts effects of the friction on the vertical variation of the current much better.  相似文献   

贡湖水质富营养化综合评价及初步预测   总被引：13，自引：0，他引：13  

范成新  季江 《海洋湖沼通报》1997,(3):18-24

对１９９６年７月贡湖三次调查资料进行的水质和富营养化现状综合评价显示：贡湖水质以Ⅲ－Ⅳ类为主，局部已出发Ｖ类，凯氏氮，非离子氨和总磷为主要污染物；营养型以中营养和中富营养类型分布面积较广。  相似文献   

海洋平台沉垫的波浪载荷试验研究   总被引：2，自引：0，他引：2  

姚美旺  张承懿  缪国平  季春群 《海洋工程》1997,(4)

本文通过对海洋平台沉垫的波浪载荷试验研究分析，着重研究了在规则波中平台沉垫总体波浪载荷和局部水动压力分布的情况，定性地考察了非线性影响、浅水影响的重要性，为今后波浪理论中粘性的引入，进而考虑粘性与波浪运动的非线性相互干扰提供实测依据  相似文献   

海洋钢筋混凝土结构牺牲阳极保护系统电极行为的研究     

季明棠  倪湘毓  杨芳英 《海洋与湖沼》1995,26(3):275-280

于１９８９－１９９０年在室内条件下，用牺牲阳极保护浸泡于海水中的多种钢筋凝土试件测试不同试件中钢筋极化与阳极布局、涂层质量，涂层厚度及试件浸水情况的关系。结果表明，牺牲阳极能有效地保护全浸海水中的混凝土试件，对间断浸淋海水的试件也有一定的保护作用，通过改善阳极安装工艺，保护作用可望提高；电偶电流在各阴阳极上的分布将随涂层质量，涂层厚度和试件浸水情况不同而异，回路中电阻和电极极化情况是影响电流分布的  相似文献   

Relationship between biogeochemical features of biogenic elements and flocculation in the Changjiang Estuary   总被引：1，自引：3，他引：1  

Lin Yi''an  Tang Renyou  Li Yan  Dong Henglin  Guan Xuwei  Chen Yinzu 《海洋学报(英文版)》1995,14(2):225-234

ＲｅｌａｔｉｏｎｓｈｉｐｂｅｔｗｅｅｎｂｉｏｇｅｏｃｈｅｍｉｃａｌｆｅａｔｕｒｅｓｏｆｂｉｏｇｅｎｉｃｅｌｅｍｅｎｔｓａｎｄｆｌｏｃｃｕｌａｔｉｏｎｉｎｔｈｅＣｈａｎｇｊｉａｎｇＥｓｔｕａｒｙ￥ＬｉｎＹｉ＇ａｎ；ＴａｎｇＲｅｎｙｏｕ；ＬｉＹａｎ；Ｄｏ...  相似文献   

East-west oscillation of sea temperature in the Equatorial Pacific and its modelling     

Hu Zeyong  Tang Maocang 《海洋学报(英文版)》1993,12(2):207-218

In this paper, by analyzing the data of sea temperature in the Equatorial Western Pacific (EWP), we found that the sea temperature at sensitive district (WSST) (about at 6° N, depth of 125-150 m) is correlated negatively to the sea temperature in the Equatorial Eastern Pacific (EEP). On the basis of basic characteristics of Equatorial Pacific atmosphere and ocean, we designed a simple air-sea coupled model. Using this model,an ocean circulation was simulated. The east-west oscillation of sea temperature in Equatorial Pacific is related to this ocean circulation.  相似文献   

台湾海峡西部柱状沉积物粘土矿物的分析   总被引：4，自引：0，他引：4  

游仲华  唐锦龙 《台湾海峡》1993,12(1):1-7

根据台湾海峡西部10个柱102个样品的X 射线衍射等分析,鉴定了该区粘土矿物组合与含量变化,分析了其与沉积环境的关系.结果表明,该区粘土矿物组合大多数站位以伊利石含量占首位,绿泥石和高岭石次之,且含少量蒙脱石;伊利石含量随距岸、水深的增加而递增,高岭石则反之;蒙脱石含量与火山活动密切相关,绿泥石含量呈斑块状分布;775和819号站有典型的陆相层,为早玉木冰期的“台湾陆桥”或“东山陆桥”提供有力证据.  相似文献   

Dynamics of an elastically moored floating body by the three-dimensional infinite element method     

S. L. Lau  Z. Ji  C. O. Ng 《Ocean Engineering》1990,17(5)

The three-dimensional problem of the dynamics of a moored floating object under the action of regular waves is solved numerically as a boundary value problem by use of the finite-infinite element method. The cross-sectional shape of the floating body and the mooring arrangements may all be arbitrary. The mathematical formulations of the problem and procedures of the numerical method are presented in this paper. A corresponding computer program WALOAD has been developed, which is capable of computing wave forces on fixed and floating structures. Numerical computations using this program could give very accurate results, even though rather coarse meshes were used. The program is easy to use and is readily applicable in many practical situations.  相似文献   

广东三水盆地晚自垩世—始新世古地磁研究及构造意义     

侯红明  袁友仁  张毅祥  汤贤赞  王保贵 《热带海洋学报》1994,(4)

对广东三水盆地上白垩统三水组、大　山组、古新统莘庄组及始新统　心组、宝月组的系统的古地磁研究结果表明：（１）旋转运动是该区构造运动的主要形式，顺时针旋转盆地拉张发育，这时针旋转盆地挤压衰亡，发育的程度与旋转角度有关；（２）始新世该区旋转方向由顺时针旋转变为道时针旋转，对应于太平洋－库拉板块对欧亚板块作用方向的改变，说明三水盆地的形成发育与太平洋－库拉板块对欧亚板块的作用密切相关；（３）三水盆地所在的华南地块从晚白垩世至始新世在纬向上不存在明显的运动，一直停留在略低于现今纬度的位置上。  相似文献