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crustal models
相关语句
  地壳模型
     It is suited to all kinds of earthquake location, and can use different crustal models.
     该方法既适合于近震定位,也适合于远震定位,定位时可采用一维、二维或三维地壳模型
短句来源
     Our results, especially the local crustal models, are in good accordance with the known results of others, and reflect the principle characters of crustal velocity structure beneath each epicenter on the whole.
     反演的局部地壳模型与已知结果对应较好,基本反映了震中区的地壳速度结构特征.
短句来源
  “crustal models”译为未确定词的双语例句
     Meanwhile, the pressure deviations (△P) of different depths and the isostatic crustal thickness of Airy-woollard type in this region have been calculated, and the crustal models of different tectonic units have been analysed as well.
     界面分布和深部重力异常图(△g_D)。 同时计算了不同深度压强偏差(△P)和Airy—Woollard均衡地壳厚度,分析了不同构造环境的地壳结构模型。
短句来源
     Meanwhile, the pressure deviations(△P)of different depths and theisostatic crustal thickness of Airy-woollard type in this region have been calculated, and the crustal models of different tectonic units have been analysed as well.
     界面分布和深部重力异常图(△g_D)。 同时计算了不同深度压强偏差(△P)和Airy—Woollard均衡地壳厚度,分析了不同构造环境的地壳结构模型。
短句来源
     Liaohe Basin is a Mz-'Cenozoic rifted basin, developed on the Pre-Mesozoic basement. Observed heat flow in Liaohe Basin is about 65 mW/m2, ranging from 44 to 83 mW/m2. On the basis of the determination of radiogenic heat productivity for different rock strata of the Basin and crustal models, mantle heat flow was calculated by means of "stripping" method.
     辽河盆地是一个在前中生代基底上发展起来的裂谷盆地,实测大地热流平均值为65mW/m~2,变动于44—83mW/m~2之间。 在给出地壳结构模型并确定各岩层放射性生热率的基础上,采用“剥层”法从地表开始,自上而下,由浅及深地扣除各岩层所提供的热量,从而得出地幔热流值。
短句来源
     To test this method gravitational data from three hypothetic crustal models are intruduced here as example. We obtained that the maximum relative error is less than 2.0 percent,mean relative error 1.0 percent.
     通过三种理论地壳构造模型的重力资料为例来检验,得出其最大相对误差小于2.0%,平均相对误差小于1.0%.
短句来源
  相似匹配句对
     MODELS OF CRUSTAL LEVELS
     地壳分展模式
短句来源
     models;
     五、发展的模式;
短句来源
     Studies on the Models of Vertical Crustal Movements
     地壳垂直形变模型的研究
短句来源
     POTENTIAL MODELS
     潜模型
短句来源
     CRUSTAL MOVEMENTS IN JIANGXI
     试论江西的地壳运动
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  crustal models
The model is compiled in an a priori fashion entirely from existing geophysical literature, specifically, combining two regionalized crustal models with a high-resolution global sediment model and a global upper mantle model.
      
Initial 20-layer crustal models are inverted for using prior tomographic results for the initial models.
      
The profile was acquired to map the crustal structure in the northernmost part of the V?ring Basin, and to link crustal models of the Lofoten and central V?ring Basin obtained by previous OBS studies.
      
Using three families of simple crustal models, we compare the effects of an anisotropic surface layer with reverberations caused by both "thick" and "thin" layers of anisotropy at depth.
      
The numerical simulation leads to successful comparison between observed seismograms in stable continental areas and synthetics computed for simple standard crustal models.
      
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This paper presents a method called the "Compressed Mass Plane" to approximate, a two-dimensional geological body. At first, the data of a gravity data is inversed, using matrix analysis to get the surface density of each element of the compressed mass plane. Then, from the relation between surface density and mass density of each element, the thickness of each two-dimensinal element can be calculated and the approximate thickness of the crust tentatively obtained. Further improvements of the estimation of the...

This paper presents a method called the "Compressed Mass Plane" to approximate, a two-dimensional geological body. At first, the data of a gravity data is inversed, using matrix analysis to get the surface density of each element of the compressed mass plane. Then, from the relation between surface density and mass density of each element, the thickness of each two-dimensinal element can be calculated and the approximate thickness of the crust tentatively obtained. Further improvements of the estimation of the crustal thickness can be made by direct gravity computation of the crustal model thus obtained and repeated adjustments of the results in order to minimize the difference between computed and observed gravity anomalies. In that way, it may be possible to get the better depths of the lower boundary of the crust.Based on the assumed values of contrast between the "Basaltic", the "Granitic" layers and the Upper Mantle and also the above calculated crustal thickness, it is again possible to calculate the gravity anomalies coming from the undulations of the Mohorovicic and (Conrad interfaces respectively. By the same way, the inversion of the gravity anomaly of the Conrad interface, a comparatively correct position of this interface can be obtained.To test this method of gravity inversion, three hypothetic crustal models and an observed gravity profile are introduced here as examples. In comparing with other methods of determining crustal interfaces, the results of the present method of compressed mass plane seem to be better.

本文用压缩质面来近似二维地质体。先由地面上测得的重力数据用矩阵方法反演此压缩质面各单元的面密度,然后从面密度与体密度差的关系求得各二维质体单元的厚度,进而得到各单元的近似地壳厚度。经正演校验和反复调整结果,使计算的重力异常值与实际测量值之残差小到满足要求,从而得到较准确的地壳底部界面。 由上地幔,玄武岩层和花岗岩层的密度差异及已算出的地壳厚度,从重力异常中分解出莫霍界面和康腊界面起伏所分别引起的重力异常。将后者同样用反演地壳厚度的压缩质面法进行计算,得到康腊界面。 文中以三种假想的地壳模型和一个实测剖面为例来检验本方法,并用其他确定地壳界面方法所得到的结果相比较,表明本文提出的压缩质面法结果较好。

In this paper according to the data of Asian continental 1°×1° mean gravity field of Bouguer anomaly and a monolayer, homogenous, calculative crustal model, the total 10456 gravity data belonging to 131 gravity profiles have been calculated for determining the depth of Moho discontinuity. Obtained from this has been an outline map showing the distribution of Asian continental crustal thickness. Based on these results gained, the features of distribution of the crustal thickness and outline...

In this paper according to the data of Asian continental 1°×1° mean gravity field of Bouguer anomaly and a monolayer, homogenous, calculative crustal model, the total 10456 gravity data belonging to 131 gravity profiles have been calculated for determining the depth of Moho discontinuity. Obtained from this has been an outline map showing the distribution of Asian continental crustal thickness. Based on these results gained, the features of distribution of the crustal thickness and outline of crustal structure under the Asian continent have been analyzed and studied. Finally, this paper advances the principal characteristics of the Asian continental crust. There exist four vast areas of relatively minor variations in the crustal thickness, namely, northern, eastern southern and central areas of Asian crust; three great comprehensive steep (progressive) variational zones of crustal thickness, i. e. Pamir-Altai-Trans-Khingan complex steep variational zone, Trans-Khingan and Da Hinggan-Taihang-Wuling-Miaoling-Hengduan mountains progressively variational zone, and Zagros-Pamir-Himalayas steep variational zone; two complex convergent "node" of steep variational zones of crustal thickness, Pamirs "node" and Hengduan mountains "node"; and one Qinghai-Xizang crustal block with great thickness.

应用亚洲大陆地区的1°×1°平均布格重力场的数据,选择了均质单层地壳模型,对131条重力剖面的10456个重力点计算确定其莫霍界面深度,得到了亚洲大陆部分的地壳厚度分布轮廓图。 并对亚洲大陆的地壳构造轮廓作了分析与探讨,指出了四点构造特征。

The fundamental principles of deducing parameters of a homogeneous, horizontally layered crustal model from the inversion of the travel times of body waves are developed and two effective inversion methods are presented: the '' layered inversion'' under some restraints and the '' composite in version'' of several seismic phases. Some artificial models are tested and a satisfactory solution may be obtained by either of the two methods.

本文将反演理论用于由体波观测走时反演匀速水平层的地壳模型参数,探讨了基本原理,提出了两种反演地壳结构的方法,同时还对假设的模型进行了验算,表明所用方法是有效的。

 
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