| 1. | Paulownia greenbelt soil can be divided into quicker consumption stage , quickest consumption stage and slower consumption stage
剖面层次据各土层含水量的变异系数划出水分活跃层、次活跃层和相对稳定层。 |
| 2. | The consistence between analytical and iterative solutions is validated through the computations of 4 calculation cases for the stable surface layer in typical summer and winter time
通过对中国夏冬两季各2种典型稳定层结条件算例的计算，验证了解析解与迭代解的一致性。 |
| 3. | Based on the standard deviation and variation coefficient , soil water change in the profile could be divided into four layers by cluster analysis
基于标准差和变异系数两个指标，采用聚类分析，可将土壤剖面水分垂直变化划分为四个层次：速变层、活跃层、次活跃层和相对稳定层。 |
| 4. | At the same time , the disturbance of the low - level jet might be the triggering condition for heavy rain . but the surface occluded front crossing qinling mountains and strengthening , maybe the direct reason
同时，由于冷空气是从中层侵入西北地区东部，这样就形成了较强的对流不稳定层结，有利于对流降水的发生。 |
| 5. | Abstract : the mountain wave induced by a ridge in two - layer stratifiedfliud has been successfully simulated in a tank . the wave pattern is almost the same compared with the linear theory result qualitatively
文摘:利用不同密度分层的盐水模拟稳定层结大气条件，在水槽中成功地模拟了两层大气分层流中二维山脊引起的地形波，得到的波动图像与线性理论模式结果在定性上基本一致。 |
| 6. | Based on these results , the layer analysis information system of slope stability ( sslais ) is designed and developed . this software is used for building the spatial information system of a slope and doing the layer analysis of slope stability
根据以上研究成果，设计开发了边坡稳定层分析信息系统（ sslis ）软件，该软件用于建立某一边坡的空间信息系统，并进行边坡的稳定层分析。 |
| 7. | It is the important mechanism that middle - level dry and cold air current sunk , low - level warm and wet air current ascended . level direction energy sharp section is important to blaze middle scale hypo - circumfluence . severe convection weather was brought by layer - knot latent instability
上层干冷、下层暖湿的位势不稳定层结可以使对流层中低层出现明显的逆温层，有利于不稳定能量积累，此次天气过程产生的对流不稳定能量大，形成的上升气流深厚。 |
| 8. | The results show that a warm high ridge at the middle level and transformed surface cold high over the plain provide a good background condition ; a cooling process produced by net surface radiation fluxes is the trigger and strengthening mechanism for the fog event ; the subsidence flow at the middle and low tropospheric levels is favorable for the setting - up and maintenance of stable stratification at the boundary layer and weak wind condition at the ground layer over the fog region ; the transportation of weak warm advection at lower levels and weak lift motion at the boundary layer play a very important role to the long maintenance of the fog event ; the intrusion of north wind accompanied by cold advection is a main dynamic factor of the fog dissipation
结果表明：在中高层暖性高压脊及地面变性冷高压稳定维持的大尺度背景条件下，地表净辐射引起的近地层冷却是大雾过程的触发和加强机制；中低空下沉气流的存在有助于近地层的弱风条件和稳定层结的建立；低层暖平流的输入和边界层的浅层抬升是大雾长时间持续的原因；伴随冷空气南下的偏北大风是驱使大雾消散的动力因子。 |
| 9. | The above analysis showed that this heavy rainfall event took on obvious meso - scale characters and was the combination of the three flows , so we can deduce : ( 1 ) surface southeasterly wind and topography may play the main role in this event ; ( 2 ) the easterly cold air rushing into the southern shaanxi province in the lower troposphere was strongly relative to the form of surface cold - front type of occlusion ; ( 3 ) there were two reasons for the secondary circulation ' s strengthen in the evening , one was the effect of a mountain - valley wind and the other may be latent heat leading to ascending motion ; ( 4 ) the shape of potential instability stratification corresponded well with the development of the warm - moisture advection ; and ( 5 ) the vapor providing essential thermodynamics was transported by a southwesterly low - level jet from the bay of bengal and the south china sea . furthermore , with the effect of terrain , the southern shaanxi province became the center of this extremely heavy rain process
中尺度结构分析表明，本次暴雨具有明显的中尺度特征，是由三支气流共同作用的结果，分析发现( 1 )地面东南风和地形在这次大暴雨过程起主要作用； ( 2 )东路冷空气主要是通过中低层侵入陕南地区的，并与地面冷式锢囚锋的形成密不可分； ( 3 )夜博士论文:中尺度地形对陕南暴雨的影响研究间垂直次级环流发展加强可能有两个原因，一个是由于地形山谷风的作用，另一个是降水的潜热释放激发了上升运动: ( 4 )位势不稳定层结的形成与低层暖湿平流的发展有很好的对应关系; ( 5 )本次暴雨的水汽主要靠偏南风急流将孟加拉湾和中国南海的水汽输送至西北地区东部，为暴雨的发生提供了必要热力条件。 |
