太湖台风风暴流准三维数值模拟的应用     

宋志尧  李瑞杰  薛鸿超 《海洋湖沼通报》2003,10(1):7-12

本文应用丁氏圆形台风模式，建立了太湖台风风暴流场的准三维数值模式，模型考虑了垂向涡粘系数沿水深变化和动量方程的修正，在对9711号（Winnie)台风影响下太湖各站水位验证的基础上，对太湖台风风暴流场进行了模拟计算。结果表明，该模式可对湖泊的台风风暴流进行复演和预测计算。从预测研究的角度看，基于台风模式的湖泊台风风暴流计算模式更有价值。  相似文献   

Modeling the Tide System of the East China Sea with GIS   总被引：2，自引：0，他引：2  

Hui Lin  Guonian Lu  Zhiyao Song  Jianhua Gong 《Marine Geodesy》1999,22(2):115-128

This article describes systematic research on the tide dynamic system under the support of the Geographic Information System and ocean fluid dynamics model. Through the high-resolution numerical simulation, we found some previously unreported phenomena, such as a low tide amplitude zone of the M2 constituent near Zhoushan isles, a low tide amplitude zone of the K1 constituent near Taiwan island, and a circular flow point band. The results of this research also show that the formation of the tide system is affected by sea-bottom friction coefficient, topography under water, and shoreline morphology. The change of shoreline morphology and significant change of topography under water play important roles in the tide system. Under specified conditions on input tide waves, shoreline morphology has a dominant impact on the formation of the tide system. With the systematically reconstructed sea level and the coastal change of 30 periods since the Pleni Glacier, the evolution process of the tide system of the East China Sea was simulated. Based on the simulation analysis of relationships among topography, shoreline and tide flow, this study concludes that the characteristic of the tide dynamic system is a dominant influencing factor on the formation of large-scale sand ridge clusters. In this article, the integration of the Geographic Information System, tide numerical simulation system, and tide movement visualization system are discussed as an example for related studies.  相似文献   

Quasi-3D Numerical Simulation of Tidal Hydrodynamic Field   总被引：2，自引：0，他引：2  

SONG Zhiyao XUE Hongchao YAN Yixin MAO Lihua  XU Fumin Doctor  Senior Engineer  College of Harbor Waterway  Coastal Engineering  Hohai University 《中国海洋工程》1999,(3)

Based on the 2D horizontal plane numerical model,a quasi-3D numerical model is establishedfor coastal regions of shallow water.The characteristics of this model are that the velocity profiles can be ob-tained at the same time when the equations of the value of difference between the horizontal current velocityand its depth-averaged velocity in the vertical direction are solved and the results obtained are consistent withthe results of the 2D model.The circulating flow in the rectangular area induced by wind is simulated and ap-plied to the tidal flow field of the radial sandbanks in the South Yellow Sea.The computational results fromthis quasi-3D model are in good agreement with analytical results and observed data.The solution of the finitedifference equations has been found to be stable,and the model is simple,effective and practical.  相似文献   

Hilbert-Huang�任�ڹ��峱�����е�Ӧ��   总被引：3，自引：2，他引：1  

陈涛  李正媛  陈志遥  吕品姬  赵兵  林穗平 《大地测量与地球动力学》2009,29(4):131-134

??(HHT) Hilbert??Huang????????????б???峱??????????????????????????????б????????????????Hilbert?任????????????Hilbert???  相似文献   

中国地震局形变台网数据中心的系统构成   总被引：4，自引：4，他引：0  

李正媛  陈志遥  陈鹏  林穗平 《大地测量与地球动力学》2002,22(3):66-68

中国地震局形变台网数据中心（下称形变数据中心）作为“九五”全国数字化形变台网数据汇集与管理的节点，满足了数字化资料高效、科学传递运行模式的需要，在全国地震台网的监测运行中发挥了重要作用。本文论述了形变数据中心系统建立中的网络布设、硬件建设、软件配置与系统应用软件的研制工作，介绍了形变数据中心目前实现的功能和运行情况。  相似文献   

A numerical study of storm surge behavior in and around Lingdingyang Bay,Pearl River Estuary,China     

Zhang  Zhuo  Guo  Fei  Song  Zhiyao  Chen  Peng  Liu  Fengfu  Zhang  Dong 《Natural Hazards》2022,111(2):1507-1532

Natural Hazards - A numerical study based on FVCOM model was carried out to investigate the storm surge behavior induced by Typhoon Mangkhut in and around Lingdingyang Bay, Pearl River Estuary....  相似文献   

平衡悬沙剖面的新指数公式          下载免费PDF全文

宋志尧  程晨 《水科学进展》2015,26(3):388-395

基于扩散理论,分析了国内外主要平衡悬沙剖面公式自由面边界条件内在的不合理性及其原因,并结合常数型和线性型悬沙扩散系数的分布特征,应用几何平均法建立了平方根型的悬沙扩散系数表达式,推得了平衡悬沙剖面的新指数公式。通过收集、整理与分析大量水槽与河流实测悬沙资料,对提出的悬沙扩散系数和平衡悬沙剖面公式与van Rijn公式、张红武公式进行了分析比较。研究结果表明,新指数公式不仅对平衡悬沙剖面的刻画精度较高,而且具有表达式特别简洁、床面含沙量为有限定值和可直接解析积分的特点,既利于理论分析,又便于工程应用。  相似文献   

ON2西部区域OH1612 MHz脉泽的新观测     

俞志尧 《中国科学院上海天文台年刊》2002,(1)

利用法国巴黎天文台的南锡射电望远镜对ON2西部区域OH16 12MHz脉泽首次进行观测 ,观测结果表明 ,西部区域的OH16 12MHz脉泽的辐射频谱为典型的单峰结构。结合模型对西部区域的OH16 12MHz脉泽谱线频谱图进行分析和研究。利用薄盘模型 ,得到相应于ON2西部区域的OH16 12MHz脉泽单峰脉泽斑的位置在r =112 .5AU ,Y =7.6AU ,其Keplerian运动速度为Ur=10 .6km s ,Vt =- 9.4km s .  相似文献   

�Ͷ�Ms5.1����ǰ�ij�ϫ�α�۲��쳣����     

吕品姬  张燕  赵莹  陈志遥 《大地测量与地球动力学》2014,34(3):52-54

????б?????峱????????????????Ms5.1???????и???400 km??Χ??????α?????????з????????????????????Щ????????????????仯?????????????????????仯????????????????л???????????  相似文献   

四川冕宁前寒武纪重晶石岩的地球化学特征   总被引：2，自引：0，他引：2  

倪志耀  莫怀毅 《地球化学》1996,25(5):512-519

四川冕宁前寒武幻尤黑木群含矿重量晶石岩是一种重要的热不沉积岩，稀土总量较低，分配模式为轻稀土富集型，具明显的铕负异常和弱的铈负异常。微量元素比较贫乏，重晶石０６３６＾３４Ｓ值与海水硫酸盐相似，是在中－低温，弱碱性，具较高氧逸度及较低硫逸度的弱氧化环境下，收快速的热水沉积作用形成。  相似文献