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- Keywords reflection seismics;rayleigh wave;dispersion curves;near surface parameters;development trend; 反射地震;瑞雷面波;频散曲线;近地表参数;发展趋势;
- near surface parameters 近地表参数
- The concentration of total alkalinity was high in the near surface layer of the shelf area and the shelf break area. 陆架区的近表层和陆架坡折区分别有一个高碱度区。
- However, people"cognition about paralic zone is far not enough, and the near surface structure of paralic zone is not simple as people imagined. 然而,现在对滩浅海地区认识还不够,同时,滩浅海地区近地表结构并不是想象的那么简单。
- The initial configuration of this system as well as the surface parameters of BOE are established according to theory of achromatism, and further more, the structure is optimized. 根据消色差原理确定系统的初始结构以及二元面的面形参数，从提高像质的角度对其进行优化。
- A sharp temperature increase across the mid-mantle transition zone inhibits a simple downward-extrapolation from the near surface data. 中地幔过渡带有一个温度突然增加,因此不能根据近地表数据向下做简单的外推。
- Twin-well microlog data can be used to infer the variability of velocity and thickness of near surface in vertical and horizontal direction, as well as statics. 利用双井微测井资料可以得到地震工区内表层速度和厚度在横向上和纵向上的变化规律,为地震资料的室内处理提供静校正量。
- The paper introduces a new method of refraction tomographic inversion static correction, which can properly calculate the statics resulted from complex near surface conditions. 摘要折射层析反演静校正能够较好地解决复杂近地表引起的静校正量问题。
- Recent years, there are serial experimental and theoretical researches on the new technique of RC structures strengthened with near surface mounted FRP. 摘要最近几年来，国外对表层嵌贴FRP复合材料加固混凝土结构这一新技术进行了一系列的试验和理论研究。
- Digital Terrain Analysis (DTA) is a topographical information analysis technology to calculate and extract terrain surface parameters and morphological features on Digital Elevation Model(DEM), and the application of DEM is extended by DTA. 数字地形分析(Digital Terrain Analysis，DTA)是在数字高程模型DEM上进行地形属性计算和特征提取的数字地形信息处理技术，是DEM应用范围的拓广和延伸。
- This paper discusses the calculation of near surface shear velocity by spectral analysis of surface waves (SASW) and multichannel analysis of surface waves (MASW). 介绍了用面波的谱分析法(SASW)及多道分析法(MASW)求取近地表横波速度剖面。
- By using the meteorological data and EOS-MODIS data of Dingxi region, some basic ground surface parameters in the dry-farming region in northwest China are derived, and each energy flux is estimated. 应用定西地区的气象资料和4次EOS-MODIS卫星资料,对典型的西北半干旱雨养农业区的基本地表特征参数进行反演,并在此基础上对各能量通量进行估算,进而分析了各通量的季节变化。
- Finally, the feasible method of using satellite remote sensing and field observation data to estimate the land surface parameters and flux densities over the inhomogeneous land surface was discussed. 最后对利用卫星遥感结合地面观测资料估算非均匀下垫面地表特征参数和能量通量的可行方法进行了讨论与展望。
- Cementite of high carbon steel wire decomposes easily near surface layer with high temperature because of wire drawing and in the region of small distance between layers after drawing. 高碳钢丝的渗碳体在因拉拔而温度升高的表层附近及拉丝后的片层间距小的区域更易分解;
- These mineralized vein bodies are usually distributed within fractures of regional fault with medium or low dip angle near surface and high angle bellow or their alternating occarrences. 矿化脉体多分布在区域断裂的裂隙构造中，矿化体在地表以中（或低）角度产出，向下以高角度产出，或者两者交替产出形成类似于倾斜的“阶梯”状。
- The results show that over the Huanghai Sea and the East China Sea area there is warm and humid air advection from south sea area in the near surface atmosphere in both day and night in May and June. 分析结果表明;黄海、东海海域近海面大气层于5月和6月无论白天和夜间都有来自南方海域的暖湿空气的平流输送.
- In addition to the petroleum geologic conditions,the main causes are also related with the properties of near surface sediments and the geographical and geomorphologic landscape conditions. 其主要原因除与油气地质条件相关外,还取决于近地表沉积物的性质,以及地理、地貌的景观条件。
- Results show that, the roughness, factual dimension and surface parameter keep good concordance, and they can all characterize the angularity of coarse aggregates well. 研究表明：粗集料的粗糙度、分形维数与表面参数具有良好的一致性，均可以较好地表征粗集料的棱角性。
- His clinic is near the newly-built railway station. 他的诊所在新建的火车站附近。
- It's dangerous to be so near to the tiger. 离老虎那么近是很危险的。
