基流

通过基流分割计算和同位素技术的应用，研究了区内地下水和地表水之间的水循环规律及地下水对黄河的贡献。

Base flow separation method and isotope technique were adopted to study the cyclic relationship between river water and groundwater .

基流分割的简便计算法

A Simple and Convenient Calculation Method on Base Flow Separation

用Lagrange函数平均法研究非均匀基流中的地形Rossby波

Study of topographic Rossby wave in uneven basic flow with average method of Lagrange function

切变基流中赤道Kelvin波及纬向对称扰动的稳定性

The stability of equatorial Kelvin wave and zonal symmetrical disturbances in shear flow

地形坡度对基流中地形Rossby波振幅的影响

The effects of topographic gradient on the amplitude of topographic Rossby wave in basic flow

基流水平结构变化在定常Rossby波列传播及正压能量转换中的作用

Effects of horizental structure variations of basic flow on propagation of stationay Rossby wave train and barotropic energy conver SCNS

利用WKB近似讨论大地形对切变基流上Rossby波稳定性的影响。

The influences of orography on the instability of Rossby waves in shear flows are discussed by WKB approximation .

山丘区河川基流BFI程序分割方法的运用与分析&以汾河流域河岔水文站为例

Application of Computerized Base-Flow Separation Method with BFI Program in Mountainous Areas

切变基流对适应过程有重大影响，当基流具有很强的反气旋切变，使f-（du）/dy0时，非地转运动强烈发展。

It is found that non-geostrophic motions will strongly develop if ( f - du / dy ) 0 . The influence of diabatic heating on geostrophic adjustment process is discussed .

利用考虑地形作用的浅水波模式对基流中地形Rossby波振幅特征进行了数值计算。

The effects of topographic gradient on the amplitude of Rossby wave are calculated numerically in terms of a shallow water model with topography .

本文提出可以用平均限制性变分原理来研究非均匀基流中地形对Rossby波的影响。

In this paper the principle of average limited variation is suggested to study the effect of topography on Rossby Wave in uneven basic flow .

基本气流含有经圈环流的斜压不稳定充要条件为：K~2<2F和（Usk+Vs1）~2>U0k~2.因而，对纯经向基流也可以出现斜压不稳定。

The sufficient and necessary conditions of baroclinic instability of the basic flow including meridional circulation are K2 < 2F and ( Usk + Vsl ) 2 > c2k2.The baroclinic instability can occur in only meridional flows .

本文使用赤道β平面下的热带大气Boussinesq近似方程组，分析了纬向切变基流中的赤道Kelvin波以及纬向对称扰动的稳定性。

Using the equatorial β - plane Boussinesq approximate equations for the tropical atmosphere , study is performed of the stability of Kelvin wave and zonal symmetric disturbances in zonal shear flow .

设计了一个高分辨率的浅水模式，以研究地形参数和纬向基流在涡旋Rossby波传播和台风切向风速变化中的作用。

A high resolution shallow-water model is designed to study the roles which the topographical parameter and latitudinal basic flow play in the propagation of vortex Rossby waves and typhoon tangential velocity changes .

在只考虑垂直切变基流时，要存在稳定的相对于平均基流向东传播的Kelvin波必须要满足Richardson数Ri>2的条件。

Only with vertical shear flow considered , the Richardson number ( R_ ( I ) > 2 ) must be satisfied to produce stable Kelvin wave propagating east with respect to mean flow .

本文在半地转近似下讨论了纬向切变基流中的非线性正压Rossby波，给出了存在波解的切变基流条件和初始扰动条件。

In this paper , base on the semi-geostrophic approximation , the non-linear Rossby waves in zonal shear basic flow are discussed , and the conditions of shear basic flow with a wave sloution and initial perturbation are gained .

在低速基流情况下：（1）重力一惯性波为准简谐波，基流和可变的Coriolis参数只给以较小的修正。

In the case of low-speed basic flow : ( 1 ) The inertia-gravity ( characteristic ) waves are quasi-harmonic , and the corrections for the influence of the basic flow and the spatial variability of the Coriolis parameter are only small .

风速垂直廓线的线性和非线性分布激发产生的中尺度重力惯性波和涡旋Rossby波，在切变基流中有可能发生不稳定而导致暴雨天气过程的产生。

The results suggested that terrain can enhance the precipitation , the linear and nonlinear distribution of wind profiles would generate mesoscale gravity inertia wave and vortex-Rossby wave , which could possibly become instable in the shear base flow and result in the rainstorm .

研究结果表明这3类方法的分割结果并不一致，有些情况下差距较大，同时也表明滤波法可以得到较为稳定的基流系数BFI，尤其是第3种滤波法可能为最优的基流分割方法。

Comparisons show that the results of all three types methods are not very different , the results also indices that the digital filters provide a more stable estimation of BFI ( base flow index ) .

采用Tennant方法分析计算生态基流，以SP水质模型为基础分析计算河道环境需水量，提出了基于单项生态需水量的综合最小生态需水量的计算方法；

In the eco-environment water demand , the method of Tennant , the SP water quality model are used to calculate base flow and river environment water requirement respectively , then a comprehensive minimum eco-environment water demand based on above mentioned single water demand is proposed and used .

本文利用波包概念和WKB方法，给出在一定地形和基流背景条件下Roosby波包的整体特性，并得到波包的发展方程和条件。

With the concept of wave packet and using WKB method , the all-round characteristics of the Rossby wave packet under the background of the basic current and the topography are obtained , and the equation and condition for the development of the wave pocket are got as well .

本文使用行波法分析求解y-z平面上的二维流体非线性动力学方程组，在斜压基流的背景场下讨论了CISK加热影响下的粘性非线性椭园弦波以及重力惯性孤立波的特征。

The present paper have solved the nonlinear two-dimensional fluid-dynamics equations on a y-z plane by using travelling-wave method and analyzed the characteristics of nonlinear viscous elliptic cosine wave and inertial-gravitational wave with CISK heating process in a baroclinic basic flow .

基流上重力内波的混沌行为

The chaotic behavior of gravitational internal wave on the basic flow

变基流时是一个多步骤的过程，很象提交活动。

Rebasing streams is a multi-step process , much like delivering activities .

斜压切变基流中横波型扰动的特征波动Ⅱ：谱函数

Characteristic waves of transversal disturbance at baroclinic shear flow ⅱ: spectral function

一种基流分割及降水入渗补给量的计算方法

A Method for Calculating Base-flow Separation and Precipitation Penetration Recharge

纯斜压基流上斜压波的发展和锋生过程

Development of baroclinic waves in pure baroclinic flows and Frontogenesis

切变东风基流和非绝热加热对热带扰动的作用

The effects of easterly shear flow and diabatic heating on Tropical Disturbances

切变基流中β中尺度扰动的特征波动

Characteristic Wave of Meso - β Scale Disturbance in Shear Basic Flow

非纬向非平行基流中的对称不稳定

Symmetric instabilities of non zonal and non parallel mean flows