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gravity inertia wave
相关语句
  重力惯性波
     It is indicated that, only under the condition that the zonal scale is large, the non geostrophic wind is dispersed with the dispersion of gravity inertia wave, and the time conservation of the vorticity is established.
     指出 ,只有当运动的纬圈尺度很大时 ,非地转风分量才能随着重力惯性波的频散而消失 ,从而建立起纬圈半地转平衡。 应用位势涡度不变式 ,给出了纬圈半地转适应后物理场的解。
短句来源
     From the analytical view of dynamics the linear and nonlinear distribution of wind speed contour line on the vertical direction of the Ningxia region stimulated and generated meso-scale gravity inertia wave and vortex-Rossby wave.
     从动力学理论的分析角度来说,在宁夏地区的垂直方向上风速廓线线性和非线性分布激发产生了中尺度重力惯性波以及涡旋Rossby波,这两种中尺度扰动在切变基流中有可能发生不稳定,最终导致宁夏地区“6.8”暴雨天气过程的产生。
短句来源
     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.
     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.
短句来源
  相似匹配句对
     Experimental research of the influence of gravity on the inertia balance
     重力对惯性秤影响的实验研究
短句来源
     INERTIA GRAVITY WAVE GENERATED BY CONVECTION AND HEATING SOURCES
     对流和加热对重力惯性波的激发
短句来源
     Basic Properties of the Internal Inertia-gravity Wave of the Atmosphere
     大气惯性重力内波的基本性质
短句来源
     EFFECTS OF TOPOGRARHY ON THE PROPAGATION AND DEVELOPMENT OF INERTIA GRAVITY WAVE
     地形对重力惯性波传播与发展的影响
短句来源
     The influence of gravity on the vibration period of inertia balance are analyzed.
     分析了重力对惯性秤的影响、重力与惯性秤的振动周期的关系 .
短句来源
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In this paper, starting from the equations describing tropical cyclone, the spiral structure of the tropical cyclone is discussed and the flow pattern is described.It shows that the formation of spiral structure is due to the action of internal gravity-inertia waves, particularly internal gravity waves. The spiral form is connected with the phase velocity of waves. The "trailing" spiral structure in the Northern Hemisphere demands that the spiral lines move counter-clockwise...

In this paper, starting from the equations describing tropical cyclone, the spiral structure of the tropical cyclone is discussed and the flow pattern is described.It shows that the formation of spiral structure is due to the action of internal gravity-inertia waves, particularly internal gravity waves. The spiral form is connected with the phase velocity of waves. The "trailing" spiral structure in the Northern Hemisphere demands that the spiral lines move counter-clockwise and outward. The angle with which a spiral line intersects with a circle of radius r is ordinarily less than 45 % at the edge of tropical cyclone it is about 10°. The distance between the spiral "arms" is about 220km for m = 2, 110 km for m = 4. The spiral waves of the tropical cyclone are dispersive. In the "trailing" spiral, cgr and cr are always positive, and cgr

本文从描写台风运动的动力方程组出发,讨论了台风的螺旋结构,给出了这种螺旋结构的图样,指出:(1)台风螺旋结构的形成是台风中重力惯性内波,特别是重力内波的作用所致,(2)台风螺旋结构的形式与波位相速紧密相关,北半球的曳式螺旋结构要求螺旋图样环绕台风眼逆时针且由中心向外运动,其向外运动的速度近于重力内波的传播速度,(3)台风的曳式螺旋倾角一般小于45°,而在台风边缘,倾角约为10°,螺旋臂间距在二旋臂结构中平均为220公里,而在四旋臂结构中平均为110公里,(4)台风螺旋波也有频散作用,在曳式螺旋中c_(gr)与c_r皆为正,且c_(gr)

Some numerical experiments of the geostrophic adaptation process of subsynoptic scale system have been carried out by using a symmetrical five-level PE-model in cylindrical coordinates. The effect of heat sources is especially discussed. The numerical results are in good agreement with the previous analytic results obtained by linear and nonlinear theory. In the linear adaptation process steady heat sources increase the amplitude of gravity-inertia wave and the system is adapted to steady heat...

Some numerical experiments of the geostrophic adaptation process of subsynoptic scale system have been carried out by using a symmetrical five-level PE-model in cylindrical coordinates. The effect of heat sources is especially discussed. The numerical results are in good agreement with the previous analytic results obtained by linear and nonlinear theory. In the linear adaptation process steady heat sources increase the amplitude of gravity-inertia wave and the system is adapted to steady heat sources eventually. In nonlinear adaptation process with heat sources the system is developed and changed, into a system similar to a tropical cyclone eventually.

本文用柱坐标中原始方程的五层对称模式对斜压大气次天气尺度系统的地转适应过程进行了数值实验.文中着重讨论了热源的影响.数值实验的结果与以前的线性理论和非线性理论一致.在线性适应过程中常定的热源使重力惯性波增幅,最终系统向常定热源适应.在有热源的非线性适应过程中,系统得到发展,最后发展成一个类似于热带气旋的系统.

A synoptical case study about the relationship between coupling of the upper and low-level jets and heavy rains is discussed in this paper. When the maximum of wind speed in upper level jet moves eastward to the east coast of China, it is found that a LLJ appears in the south of the entrance region on 700 mb level. The axis of LLJ is nearly parallel to the upper jet's axis. Heavy rains and a horizontal shear line occur in the region between two jets. The relationship between coupling of upper and low-level jets...

A synoptical case study about the relationship between coupling of the upper and low-level jets and heavy rains is discussed in this paper. When the maximum of wind speed in upper level jet moves eastward to the east coast of China, it is found that a LLJ appears in the south of the entrance region on 700 mb level. The axis of LLJ is nearly parallel to the upper jet's axis. Heavy rains and a horizontal shear line occur in the region between two jets. The relationship between coupling of upper and low-level jets and heavy rains can also be clearly shown in a composite cross-section of wind fields.The observed results can be explained by the unstable gravity-inertia wave in the adjustment process when we use the splitting analysis method between the advec-tion and adjustment processes.

本文分析了暴雨和低空急流发展过程的一次天气个例.当高空急流中心自西向东移到我国东部沿海,在最大风速中心上游的入口区南面,对应副高北侧的高温潮湿的空气,当扰动的相当水平尺度小于适应过程的特征尺度时,在高空急流入口区南面550公里处的700毫巴等压面图上,引起了低空急流的迅速加强.强的降水区和流场的水平切变线,出现在两支急流之间的地区.这一个例分析的天气事实,可从平流过程和调整过程的相互作用,以及调整过程中重力惯性波的不稳定性来说明.

 
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