河谷地形 meaning in English
valley form
Examples
- There are two greater value centers : one is the valley region in northeast of the plateau , the other is the north of sichuan province
外流河谷地区两侧山脉的年降雨量较大，年均大到暴雨日数较多，河源处相对较小，具有河谷地形的特点。 - It is found that the mesoscale mountain has significant influence on the location and intensity of the heavy rain area , and the bell - mouthed area and the riverway area of xichang are favorable to the occurrence and development of mesoscale disturbance and heavy rain
地形梯度分析表明，西昌地区所处的河谷地形和场区所处喇叭口小地形，有利于中小尺度气压扰动的发生、发展和暴雨的产生，当地形梯度减弱时，降水量相应减弱。 - The weather analysis and climatic characteristics of the heavy - hard rainfall in this area , structure characteristics during the rainstorm , the mechanism and structure of mesoscale systems bringing rainstorm and etc . are studied by conducting diagnostic analysis , theory of dynamics and numerical simulation . the influence on the rainstorm causing by mesosc ale topography piling on the plateau , the particular valley topography in northeast plateau and complex surface vegetation are researched by numerical experiments
本论文试图采用诊断方法、诊断和天气动力学理论相结合的方法、数值模拟等方法对高原地区大到暴雨的天气、气候特征，暴雨产生时的物理量场特征、产生暴雨的中尺度系统的发生机理和结构特征等方面进行研究，对叠加在高原上的中尺度地形、高原东北部特殊的外流河谷地形及复杂下垫面性质对暴雨的可能影响进行数值试验，以揭示高原暴雨发生发展的物理机制。