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西北黄土地区
相关语句
  loess area in northwest china
     FUZZY SETS METHOD ON EVALUATING ISOSEISMAL MAP OF LOESS AREA IN NORTHWEST CHINA
     西北黄土地区及其邻区烈度影响范围的模糊信息分析
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  “西北黄土地区”译为未确定词的双语例句
     Distribution Characteristics and Macroscopic Influencing Factors of Seismic Loess Landslides in Northwest China
     中国西北黄土地区地震崩滑的分布与宏观影响因素
短句来源
     In the loess region of Northwest China, the smallest magnitudes at which the seismic avalanche or slippage can occur individually are MS 4, 5 (about intensity 5).
     中国西北黄土地区产生地震崩落、滑移的最低震级分别为4、5级,或地震烈度5度。
短句来源
     Pile Spacing Design of Lime-soil Compaction Pile in Loess Area of Northwest China
     西北黄土地区灰土挤密桩的桩心距设计
短句来源
     Basic Characteristics of Seismic Landslides in Loess Area of Northwest China
     中国西北黄土地区地震滑坡基本特征
短句来源
     The Strain Screening and Influence Factors of Bioremediation of Petroleum Polluted Soil in Northwest Loess Area
     西北黄土地区石油污染土壤生物修复的菌种筛选与影响因素
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  相似匹配句对
     STUDIES ON HUMIC SUBSTANCES OF SOILS IN LOESS AREA OF NORTHWEST CHINA
     西北黄土地区土壤腐殖物质的研究
短句来源
     Stability Analysis of Loess Banks of Reservoirs in Northwestern China
     西北地区水库黄土库岸稳定分析
短句来源
     Basic Characteristics of Seismic Landslides in Loess Area of Northwest China
     中国西北黄土地区地震滑坡基本特征
短句来源
     THE LATE QUATERNARY LOESS STRATA AND ENVIRONMENTAL CHANGE IN NORTHWEST OF CHINA
     西北地区晚第四纪黄土地层与环境
短句来源
     The Reality of the Ecology Environment of the Northwest Area
     西北地区生态环境的现状
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In this paper, according to the geological structure, geomorphic feacture and the characteristics of seismic activity, the author: divided the loess region of the Northwest China into four subregions and studied their attenuation laws of seismic ground motion. The results show that the attenuation rate of intensity as well as seismic ground motion becomes slower from the western region to the eastern region with the increasing of the thickness of soil stratum. Before statistical analysis, the authors made linear...

In this paper, according to the geological structure, geomorphic feacture and the characteristics of seismic activity, the author: divided the loess region of the Northwest China into four subregions and studied their attenuation laws of seismic ground motion. The results show that the attenuation rate of intensity as well as seismic ground motion becomes slower from the western region to the eastern region with the increasing of the thickness of soil stratum. Before statistical analysis, the authors made linear interpolation of isoseismic contours to consider the uncertainty of attenuation. The authors also put forward a new thought, that is, using the Q value to adjust the parameters of attenuation law of seismic ground motion.

本文根据地质构造、地貌形态及地震活动性特点等将中国西北黄土地区分为4令分区,研究了该地区的地震动衰减规律。研究结果表明,从西向东烈度、地震动衰减速度减慢,即土层厚度越大衰减越慢。对于地震等震线的不确定性问题。本文采用插值法进行了预处理,使烈度统计结果更能反映真实情况,并降低了危险性水平。另外,还尝试引入了介质品质因子Q值来调整加速度、速度衰减规律中的粘滞系数,对其他参数也作了相应的调整。

The paper deals with contents, composition, characteristics and distribution of humus in loessial soils of northwest China. Results obtained are summarized as follows.

本文研究了西北黄土地区土壤腐殖质的含量、组成、性质与分布。其结果是:1.土壤腐殖质含量,是从东南向西北呈由高到低的分布规律。2.胡敏酸的含量、胡敏酸/富里酸的比值及胡敏酸的芳构化程度,均以陕西靖边县草原植被下的轻黑垆土为中心,向西和向北荒漠草原植被下的棕钙土与白绵土;向南森林草原与森林植被下的(土娄)土和褐土;向东是黄绵土逐渐降低。胡敏素的含量是向西、北、南及东逐渐增加。3.与钙结合的胡敏酸,以黑垆土为中心是向西、北、南和东递减;与铁铝结合的胡敏酸是向西、北、南和东递加。4.胡敏酸芳构化程度:草原土壤>干草原与森林草原土壤>荒漠草原和森林土壤。

According to the behaviors of soil splash erosion in the loess area and in connection with the physical and chemical characteristics of soil solute, the dynamic model for soil solute moving with runoff is deduced,and also the dynamic model of runoff Ca2+ is obtained through field experimental data, and the model is tested.

根据西北黄土地区土壤击溅侵蚀特点,结合土壤溶质的物理和化学特性。推求了黄土坡面溶质随地表径流迁移的动力模拟模型,并利用实测资料得到了径流Ca~(2+)动力模型,同时对模型进行了检验。

 
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