The previous studies show that the spreading path of the subtropical salinity minimum of the North Pacific Intermediate Water （NPIW） is southwestward pointing to the Luzon Strait. Based on the P -vector method and g...The previous studies show that the spreading path of the subtropical salinity minimum of the North Pacific Intermediate Water （NPIW） is southwestward pointing to the Luzon Strait. Based on the P -vector method and generalized digital environmental model （GDEM） data, the volume transport of NPIW through Luzon Strait and the upward transport on the NPIW lower and upper boundaries are calculated to examine the destiny of NPIW in the South China Sea （SCS）. On the annual mean, the estimation of NPIW transport into the SCS through the Luzon Strait is 1.72 Sv （1Sv=10 6 m 3 /s）. The upward transport over the SCS is 0.31 Sv on the NPIW upper boundary and 1.31 Sv on the NPIW lower boundary. There is no strait or passage deeper than the surface for the NPIW to extend, except for the Luzon Strait. For the volume balance in the SCS NPIW, the volume transport of 2.72 Sv has to flow out of the SCS NPIW layer through the Luzon Strait.展开更多
Deep water in the Nordic seas is the major source of Atlantic deep water and its formation and transport play an important role in the heat and mass exchange between polar and the North Atlantic. A monthly hydrolog-ic...Deep water in the Nordic seas is the major source of Atlantic deep water and its formation and transport play an important role in the heat and mass exchange between polar and the North Atlantic. A monthly hydrolog-ical climatology—Hydrobase II—is used to estimate the deep ocean circulation pattern and the deep water distribution in the Nordic seas. An improved P-vector method is applied in the geostrophic current calcula-tion which introduces sea surface height gradient to solve the issue that a residual barotropic flow cannot be recognized by traditional method in regions where motionless level does not exist. The volume proportions, spatial distributions and seasonal variations of major water masses are examined and a comparison with other hydrological dataset is carried out. The variations and transports of deep water are investigated based on estimated circulation and water mass distributions. The seasonal variation of deep water volume in the Greenland Basin is around 22×103km3 whereas significantly weaker in the Lofoten and Norwegian Basins. Annual downstream transports of about 1.54×103 and 0.64×103 km3 are reported between the Greenland/Lofoten and Lofoten/Norwegian Basins. The deep water transport among major basins is generally in the Greenland-Lofoten-Norwegian direction.展开更多
In the presence of spin and pseudospin （p-spin） symmetries, the approximate analytical bound states of the Dirac equation for scalar-vector-tensor Hulth6n potentials are obtained with any arbitrary spin-orbit coupli...In the presence of spin and pseudospin （p-spin） symmetries, the approximate analytical bound states of the Dirac equation for scalar-vector-tensor Hulth6n potentials are obtained with any arbitrary spin-orbit coupling number using the Pekeris approximation. The Hulth6n tensor interaction is studied instead of the commonly used Coulomb or linear terms. The generalized parametric Nikiforov-Uvarov （NU） method is used to obtain energy eigenvalues and corresponding wave functions in their closed forms. It is shown that tensor interaction removes degeneracy between spin and p-spin doublets. Some numerical results are also given.展开更多
基于美国海军的空间分辨率为0.5°×0.5°月平均的GDEM(Generalized D igital Environmen-talModel)三维温盐资料,采用P-Vector方法,计算了南海西部夏季冷涡及附近海域的三维环流,分析了此冷涡的水平结构和垂向结构及其季...基于美国海军的空间分辨率为0.5°×0.5°月平均的GDEM(Generalized D igital Environmen-talModel)三维温盐资料,采用P-Vector方法,计算了南海西部夏季冷涡及附近海域的三维环流,分析了此冷涡的水平结构和垂向结构及其季节变化规律。结果表明南海西部夏季冷涡所占据的海域为一上升流区,对应的是低温区和气旋式环流,其温度场具有明显的垂向层化结构,冷涡随深度增加而减弱。冷涡中心在上层靠近越南沿岸,在温跃层以下有离岸的趋势。此冷涡具有明显的季节性变化:在5、6月份冷涡开始形成,其范围达到110.75°E,最大切向流速为8 cm/s;在7、8月份冷涡达到强盛,其范围向东扩展至112.50°E,冷涡中心也向东移至(110.50°E,13.25°N),最大切向流速增加为30 cm/s;在9、10月份冷涡开始衰减。展开更多
基金National Basic Research Program of China under contract No. 2011CB403502Ocean Public Welfare Scientific Research Project under contract No. 201105002-11
文摘The previous studies show that the spreading path of the subtropical salinity minimum of the North Pacific Intermediate Water （NPIW） is southwestward pointing to the Luzon Strait. Based on the P -vector method and generalized digital environmental model （GDEM） data, the volume transport of NPIW through Luzon Strait and the upward transport on the NPIW lower and upper boundaries are calculated to examine the destiny of NPIW in the South China Sea （SCS）. On the annual mean, the estimation of NPIW transport into the SCS through the Luzon Strait is 1.72 Sv （1Sv=10 6 m 3 /s）. The upward transport over the SCS is 0.31 Sv on the NPIW upper boundary and 1.31 Sv on the NPIW lower boundary. There is no strait or passage deeper than the surface for the NPIW to extend, except for the Luzon Strait. For the volume balance in the SCS NPIW, the volume transport of 2.72 Sv has to flow out of the SCS NPIW layer through the Luzon Strait.
基金The Key Project of Chinese Natural Science Fundation under contract No.41330960the Chinese Polar Environment Comprehensive Investigation and Assessment Programmes,State Oceanic Administration of China under contract Nos CHINARE2014-03-01 and CHINARE2014-04-03the Public Science and Technology Research Funds Projects of Ocean under contract No.201205007-4
文摘Deep water in the Nordic seas is the major source of Atlantic deep water and its formation and transport play an important role in the heat and mass exchange between polar and the North Atlantic. A monthly hydrolog-ical climatology—Hydrobase II—is used to estimate the deep ocean circulation pattern and the deep water distribution in the Nordic seas. An improved P-vector method is applied in the geostrophic current calcula-tion which introduces sea surface height gradient to solve the issue that a residual barotropic flow cannot be recognized by traditional method in regions where motionless level does not exist. The volume proportions, spatial distributions and seasonal variations of major water masses are examined and a comparison with other hydrological dataset is carried out. The variations and transports of deep water are investigated based on estimated circulation and water mass distributions. The seasonal variation of deep water volume in the Greenland Basin is around 22×103km3 whereas significantly weaker in the Lofoten and Norwegian Basins. Annual downstream transports of about 1.54×103 and 0.64×103 km3 are reported between the Greenland/Lofoten and Lofoten/Norwegian Basins. The deep water transport among major basins is generally in the Greenland-Lofoten-Norwegian direction.
基金Supported by the National Natural Science Foundation of China （60421002） and priority supported financially by ＂the New Century 151 Talent Project＂ of Zhejiang Province.
文摘为了克服软传感器模型不能与这个过程被更新的问题，变化，基于算法和增长支持向量用机器制造的混合模糊 c 工具(FCM )(ISVM ) 为算法建模的一个软传感器被建议。这混合算法 FCMISVM 包括三部分：取样基于 FCM 算法聚类，学习基于 ISVM，和启发式的样品排水量方法的算法。在训练过程，训练样品被与 SVM 算法聚类的 FCM 算法，然后 by training 各个首先聚类，一个亚模型被造到每个聚类。在预言的进程，当表示新操作信息的一件增长样品在模型被介绍时，到每个聚类的样品的模糊会员函数是首先由 FCM 算法计算了。然后，与最大的模糊会员功能聚类的一个相应 SVM 亚模型被用来预言并且表现增长学习因此模型能被更新联机。启发式的样品排水量方法选择的一件旧样品然后从亚模型被丢弃控制工作集合的尺寸。建议方法被使用在吸附分离过程预言 p 二甲苯(PX ) 纯净。模拟结果显示建议方法实际上增加模型的适应能力到各种各样的操作条件并且改进它的归纳能力。
文摘In the presence of spin and pseudospin （p-spin） symmetries, the approximate analytical bound states of the Dirac equation for scalar-vector-tensor Hulth6n potentials are obtained with any arbitrary spin-orbit coupling number using the Pekeris approximation. The Hulth6n tensor interaction is studied instead of the commonly used Coulomb or linear terms. The generalized parametric Nikiforov-Uvarov （NU） method is used to obtain energy eigenvalues and corresponding wave functions in their closed forms. It is shown that tensor interaction removes degeneracy between spin and p-spin doublets. Some numerical results are also given.
