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horizontal velocity field
相关语句
  水平速度场
     THEORY AND METHOD OF INVERSING HORIZONTAL VELOCITY FIELD OF CRUSTAL MOVEMENT BY SEISMIC MOMENT TENSOR
     利用地震矩张量反演地壳运动水平速度场的理论和方法
短句来源
     The horizontal velocity field along the direction of front movement displays the characteristics of typical convergence pattern.
     水平速度场在沿锋面移动方向表现出明显的辐合(散)特征。
短句来源
  “horizontal velocity field”译为未确定词的双语例句
     It appears that the superposition principle of waves and currents may be used to develop the horizontal velocity field.
     结果还表明对于波流共同作用下的水平流速场可以应用波浪与水流二者水平流速值的叠加原理。
短句来源
     A METHOD OF JOINT INVERSION OF GPS OBSERVATIONS AND SEISMIC MOMENT TENSORS FOR DETERMINING CRUSTAL HORIZONTAL VELOCITY FIELD
     GPS观测量与地震矩张量联合反演地壳水平运动速度场的方法
短句来源
     Based on the bi\|cubic Bessel spline function method, this paper inverts the present\|day crustal horizontal velocity field and deformation field in China continent by combining GPS velocities obtained by high\|precision GPS network adjustment, seismic moment tensor data and fault slip rates.
     按照中国大陆地质构造情况 ,将中国大陆划分成不规则的曲线网格 ,利用高精度GPS网平差得到的GPS速度、地震矩张量和活断层滑动速率 ,采用双三次样条函数拟合的方法 ,求出了中国大陆现今地壳运动速度场和变形场 ;
短句来源
     On the basis of the GPS observation records in 1991, 1999 and 2001 in the Sichuan-Yunnan area and present related geological data, we simulated and analyzed the horizontal tectonic motion and deformation features of this area according to the principle of discontinuous deformation positive analysis. The result shows: the whole horizontal velocity field decreased obviously in 1999-2001 in the area;
     依据川滇地区1991,1999和2001年GPS测量数据,利用DDA正分析基本原理,结合现有的地质资料,对该地区近年来的水平构造运动特征进行了模拟分析,认为川滇地区水平运动整体速率在1999~2001年期间明显减弱;
短句来源
     (3) Comparing the results of diagnostic calculation with those of semidiagnostic and prognostic calculations indicate that the horizontal velocity field agrees qualitatively, and there is a little difference between them in quantity.
     ( 3)比较诊断、半诊断及预报模式计算结果 ,它们在定性上比较一致 ,在定量上有些差异 .
短句来源
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  相似匹配句对
     Certainty of Desposit Velocity in Horizontal Pipe
     水平管道中堆积速度的确定
短句来源
     ANALYSIS ON CRITICAL VELOCITY FOR HORIZONTAL TUNNEL
     水平隧道临界风速研究
     DISTRIBUTION AND CALCULATION OF THE ACIDIZING PRESSURE AND FLOWING VELOCITY FIELDS OF HORIZONTAL WELL
     水平井酸化压力场与流速场分布计算研究
短句来源
     The Velocity Fields and Strain Fields of Horizontal Crust Motion of the Mainland of China
     中国大陆地壳水平运动速度场与应变场
短句来源
     Numerical solution to the horizontal turbulent velocity field with free surface by OSFEM
     剖开算子法解具有自由表面的平面紊流速度场
短句来源
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  horizontal velocity field
The position of the regions are compared in a pair of consecutive synoptic charts and the horizontal velocity field responsible for their position changes, is inferred.
      
A horizontal velocity field is used to describe the large-scale transport of magnetic flux over the whole solar photosphere.
      
The 2D horizontal velocity field determined from local correlation tracking of granulation and its divergence have remarkably different appearances.
      
Observations of the horizontal velocity field surrounding sunspots
      
A complementary note on "nonlinearity of the horizontal velocity field under wind-waves"
      
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The velocity field produced by a gravity wave in a steady current is evaluated theoret- icaUy and experimentally.Analysis indicates that the vertical velocity distribution of the current becomes more uniform during wave-current interaction and it has been verified exp- erimentally.It appears that the superposition principle of waves and currents may be used to develop the horizontal velocity field.Surface elevations and horizontal velocities Calculated or observed indicate that the non-linear...

The velocity field produced by a gravity wave in a steady current is evaluated theoret- icaUy and experimentally.Analysis indicates that the vertical velocity distribution of the current becomes more uniform during wave-current interaction and it has been verified exp- erimentally.It appears that the superposition principle of waves and currents may be used to develop the horizontal velocity field.Surface elevations and horizontal velocities Calculated or observed indicate that the non-linear wave theories provide better results than the linear wave theory.It is recommended that for engineering purposes,Stokes'third-order wave theory may be used when d/L_s is greater than 0.1.The cnoidal wave theory may be used for the determination of velocity field due to wave-current interaction when d/L_s is smaller than 0.1(where d is the water depth and L_s is the wave length in still water).

本文讨论了波浪与稳定流相互作用的二元流条件下的流速场问题。分析表明由于波浪与水流相互作用的结果水流的垂线流速分布变得更为均匀,这一结果已经实验验证。结果还表明对于波流共同作用下的水平流速场可以应用波浪与水流二者水平流速值的叠加原理。数值计算的结果表明,对于波面高程和水平流速值,由非线性波理论所得的结果较线性波理论的结果为好。作者认为,在波流共同作用条件下,在工程实用上为了计算水平流速场,当相对水深 d/L+2大于0.1时,司采用斯托克斯三阶波或五阶波理论,当相对水深 d/L_2小于0.1时,司采用椭圆余弦波理论(d 为水深,L_2为静水中的波长)。

The geostrophic momentum approximation in the β - plane (β-GMA) and the condition of its validity are studied . A dynamical system of equations that describe motions in the Ekman boundary layer incorporating the β-GMA are derived. The effects of β-term and GM on the dynamics of boundary layer are studied. The solutions of β-GMA include two parts. One results from the solutions of f-GMA. The other results from the effect of the β-term and GM. Consequently, on one hand, the dynamics of β-GMA includes the one of...

The geostrophic momentum approximation in the β - plane (β-GMA) and the condition of its validity are studied . A dynamical system of equations that describe motions in the Ekman boundary layer incorporating the β-GMA are derived. The effects of β-term and GM on the dynamics of boundary layer are studied. The solutions of β-GMA include two parts. One results from the solutions of f-GMA. The other results from the effect of the β-term and GM. Consequently, on one hand, the dynamics of β-GMA includes the one of f-GMA. On the other hand, the solution of f-GMA is longitudinally symmetric, but the one of β- GMA is not due to the effect of β-term for a steady, longitudinally symmetric height field. An example of a steady, axisymmetnc circular vortex is used to show the characteristics of the horizontal velocity field in the Ekman layer and the vertical veolicity at the top of PBL. These results are discussed in detail by comparing with the classical solutions and that obstained under f-GMA.

本文研究了β平面中的地转动量近似(β-GMA)及其成立条件.利用β-GMA得到了一个描述Ekman动力学特征的动力学方程组.研究了β项和地转动量(GM)对Ekman层动力学的共同作用.结果表明,β-GMA下的解由两部分组成,一部分即为f-GMA下的解,另一部分为β项与GM的相互作用解.这样,一方面,β-GMA解由于β项存在,对一个定常纬向对称的高度场具有纬向非对称结构,而f-GMA解是纬向对称的.利用一个定常、轴对称的圆形涡旋例子计算了Ekman层的水平风速和边界层顶部的垂直速度,并与经典解、f-GMA解作了详细的分析比较.

In this paper, the frontogenesis process forced by dust radiative heating and effect of radiative heating of an isolation duststorm on the frontal circution system are investigated by two- and three-dimension numerical models. The results show that as the duststorm outbreak, the radiative heating results in frontogenesis in lower troposhere layer in daytime and produces an obvious isentropic mixed layer above duststorm center. The horizontal velocity field along the direction of front movement displays...

In this paper, the frontogenesis process forced by dust radiative heating and effect of radiative heating of an isolation duststorm on the frontal circution system are investigated by two- and three-dimension numerical models. The results show that as the duststorm outbreak, the radiative heating results in frontogenesis in lower troposhere layer in daytime and produces an obvious isentropic mixed layer above duststorm center. The horizontal velocity field along the direction of front movement displays the characteristics of typical convergence pattern. At night, the frontolysis occurs due to the radiative cooling of dust.An obvious vertical circulation along large-scale wind direction is forced by the radiative heating of the isolated duststorm. The vertical circulation is stronger in daytime and become weaker at night. The direction of the vertical circulation in daytime is opposite to that at night. The response of the horizontal wind fields on radiative heating from dust are different at different heights.

本文分别利用二和三维数值模式研究了沙尘暴辐射强迫的锋生过程和孤立的沙尘暴单体辐射加热对锋面环流系统的影响。结果表明:沙尘爆发时,沙尘辐射加热在大气低层导致锋生,在大气中层产生一明显的等熵位温层。水平速度场在沿锋面移动方向表现出明显的辐合(散)特征。晚上,沙尘辐射冷却导致大气低层锋消。 孤立的沙尘暴单体辐射加热在盛行风方向强迫出一个明显的垂直环流圈,它在白天较强,晚上较弱和反向。水平风场对沙尘的辐射强迫响应在不同高度上是不同的。

 
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