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   转换波速度 的翻译结果: 查询用时:0.253秒
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转换波速度
相关语句
  converted-wave velocity
     and it is added to the low-frequency content of converted-wave velocity to form satisfactory converted-wave velocity.
     然后利用转换波反射系数的速推关系,求得转换波速度的相对分量,加上转换波速度的低频成分,即可求得转换波速度
短句来源
     The shear wave velocity determined by converted-wave velocity analysis is an important parameter for common conversion point(CCP) binning technique.
     利用转换波速度分析拾取的横波速度是转换波共转换点(Common Conversion Point简称CCP)叠加技术中很重要的参数.
短句来源
     By comparison with P-wave, the partial key points, CCP binning and converted-wave velocity analysis, are discussed emphatically which are different from those of the P-wave seismic data processing;
     通过与常规P波的对比,重点阐述了转换波地震数据处理中不同于纵波处理的部分关键步骤即共转换点道集选排与转换波速度分析;
短句来源
     Common conversion point (CCP) binning 、 non-hyperbolic normal moveout (NMO) and converted-wave velocity analysis based on non-hyperbolic NMO are the key points to CCP stacking for converted-wave.
     转换波共转换点叠加的关键在于CCP抽道集、非双曲线正常时差校正及基于非双曲线时距方程的转换波速度分析。
短句来源
     Method of anisotropic converted-wave velocity analysis
     各向异性介质转换波速度分析方法
短句来源
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  converted wave velocity
     Conventional method for converted wave velocity analysis extracts CCP (Common Converted Point) gather firstly, then does velocity analysis on this gather. Forming CCP gather needs velocity, while the purpose of velocity analysis is to obtain velocity, therefore, conventional velocity analysis is an iterative process.
     常规转换波速度是先抽CCP道集 ,然后进行转换波分析 ,而抽CCP道集需要速度 ,转换速度分析的目的又是为了计算速度 ,因此常规转换波速度分析是一个迭代的过程。
短句来源
     It can not only be applied to CCP gathering, but also can be applied to converted wave velocity analysis and NMO.
     该迭代方法不仅可直接用于转换波CCP道集抽取 ,还可直接用于相应的转换波速度分析及其动校正
短句来源
     The distance of common converted point ( CCP ) of converted wave relative to common mid point (CMP) changes with such factors as ratio of P- and S-wave velocities, depths and offsets ,which can't use fixed gathers to conduct analysis of converted wave velocity ,whereas use different gathers to conduct velocity analysis when ratio of velocities and depths change.
     转换波共转换点相对于共中心点的偏移距离随着纵横波速度比、深度以及炮检距等因素的变化而变化,因此不能采用固定道集的方法进行转换波速度分析,而应当在速度比与深度等因素变化时,速度分析所用的道集也做相应的变化。
短句来源
  “转换波速度”译为未确定词的双语例句
     Velocity analysis by nonhyperbolic equation and interactive method, converted point calculation by exact formula, normal moveout correction by nonhyperbolic equation are adopted to enhance processing accuracy.
     为了提高转换波处理精度 ,采用非双曲交互速度分析实现转换波速度分析 ,采用精确公式计算转换点 ,采用非双曲方程进行转换波动校正 ;
短句来源
     Velocity analysis and interpretation of P-SV wave
     P-SV转换波速度分析及解释方法
短句来源
     High precision velocity analysis of converted wave.
     高精度转换波速度分析
短句来源
     The principles of establishing the initial velocity field for pre-stack time migration were studied, which are 1) introducing the anisotropic parameters in the scatter travel time equation based on the characteristics of converted-wave, and 2) using three spectrums analysis method to build the initial velocity field for pre-stack time migration.
     论述了建立叠前时间偏移初始速度场的方法原理——根据转换波的特点,在转换波散射旅行时方程中引入各向异性参数,针对转换波速度和各向异性参数,利用“三谱”分析技术建立叠前时间偏移初始速度场;
短句来源
     A new approach to velocity estimation and depth imaging of converted waves: Pseudo-offset migration
     转换波速度估算和深度成像新方法——拟偏移距偏移法
短句来源
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A simultaneous detection of P wave and P-SV converted wave is made using constant offset on a 2-D organic glass model consisting of anticline,fault and horizontal reflector.Not only quite clear P-SV waves are recorded but also converted diffractions are obtained for the first time. The following points are drawn from the experiment: (1)the structural configuration shown by P-SV waves is similar to that shown by P waves,which indicates that converted waves can be used to prospect for hydrocarbon or to check the...

A simultaneous detection of P wave and P-SV converted wave is made using constant offset on a 2-D organic glass model consisting of anticline,fault and horizontal reflector.Not only quite clear P-SV waves are recorded but also converted diffractions are obtained for the first time. The following points are drawn from the experiment: (1)the structural configuration shown by P-SV waves is similar to that shown by P waves,which indicates that converted waves can be used to prospect for hydrocarbon or to check the P wave exploration results; (2)both P wave and P-SV wave can also be recorded at the off- set which is less than,or equal to the reflector depth,this offset being much smaller than the theoretical distance which was considered to be 1—3 times the reflector depth; (3)the frequency corresponding to the peak amplitude of P-SV wave is lower than that of P wave,but their frequency bandwidths are nearly equal; (4)the velocity of P-SV wave is lower so that its resolution is higher.

在用有机玻璃制成的背斜和断层二维模型上,采用等炮检距的特殊观测方法,进行了 P 波和 P—SV 转换波的同时观测。结果获得了相当清晰的 P—SV 转换波,并首次获得了转换绕射波。初步的分析研究表明:P—SV 转换波所反映的构造形态与 P 波所反映的构造形态相似,这说明可以用转换波进行勘探,也可用来印证 P 波的结果;在小于或等于界面埋深的炮检距上可同时观测到 P波和 P—SV 波,这比理论研究认为要在1~3倍界面埋深的距离上才能观测到P—SV 波的距离要小,P—SV 转换波的主频低于纵波,频谱宽度相近;P—SV转换波的速度低于纵波,其分辨能力应强于纵波。

The anisotropy of medium in HBC area in Sichuan Province was found in the pro- cessing and interpretation of P and SH wave data.Shear wave passing through anisotropic medium splits into two different waves:fast shear wave whose polarization direction is parallel to fracture trend in formations,and the slow shear wave that pola- rizes in the direction perpendicular to fracture trend.Fast and slow shear wave sections can be respectively obtained by using different layouts and data processing methods.The anisotropy...

The anisotropy of medium in HBC area in Sichuan Province was found in the pro- cessing and interpretation of P and SH wave data.Shear wave passing through anisotropic medium splits into two different waves:fast shear wave whose polarization direction is parallel to fracture trend in formations,and the slow shear wave that pola- rizes in the direction perpendicular to fracture trend.Fast and slow shear wave sections can be respectively obtained by using different layouts and data processing methods.The anisotropy coefficient can be derived from the travel times of fast and slow S-waves ar- riving at the same interface;it can also be obtained from the ratio of SH-wave velocity to converted wave velocity.Anisotropy coefficient reflects fracture density.Then the direction of fracture zone can be determined by making both X,Y-component detection in data acquisition and coordinate revolution in data processing.Without the above mea- sures taken,we can roughly determine the direction of fracture zone in the light of structure-line trend.

在纵波、SH 型横波资料处理和解释过程中,我们发现四川 HBC 地区地下介质普遍存在方向各向异性。当横波通过方向各向异性介质时,分裂成两个波:一个波的偏振方向与裂缝平行,叫快横波;另一个波的偏振方向与裂缝走向垂直,叫慢横波。采用相应的观测和处理方法,便可获得快横波和慢横波剖面。根据同一界面的快、慢横波的旅行时可以求得各向异性系数。同样,还可以利用 SH 波与转换波的速度比求取各向异性系数。各向异性系数的大小,反映了裂缝的发育程度。如果野外作了 X、Y 分量观测,室内又作了坐标旋转处理,那么,就可以进一步确定裂缝带的方向。如果未作上述工作,也可以根据构造线走向,大致确定裂缝带的发育方向。

The reflecting point of converted wave is not beneath the center of the line between source point and corresponding receiving point, and its deviation to the center depends on both velocity Vs of converted shear wave and reflecting point depth h. Reflection times of converted waves which are reflected at a subsurface point and received on surface do not follow hyperbolic law of reflected compressional wave,so that velocity analysis method for compressional wave does not apply to converted waves.Stack velocity...

The reflecting point of converted wave is not beneath the center of the line between source point and corresponding receiving point, and its deviation to the center depends on both velocity Vs of converted shear wave and reflecting point depth h. Reflection times of converted waves which are reflected at a subsurface point and received on surface do not follow hyperbolic law of reflected compressional wave,so that velocity analysis method for compressional wave does not apply to converted waves.Stack velocity analysis method for converted wave , which considers depth variation in vertical direction and does velocity-variable trace gathering in lateral direction, avoids troubles resulting from both the asymmetry of converted-wave line-ups and the non-hyperbolic characteristic of reflection time values to achieve accurate velocity analysis of converted wave. This method has been used to process converted-wave data of 92LYS5Ol seismic line, bringing desirable result.

转换波反射点不在炮点-检波点的中心点正下方,其偏离中心点的距离随转换横渡速度Vs和反射点深度h的变化而变化。地面接收到的来自地下某点的转换波反射信号到达时间也不遵循(纵波反射的)双曲线规律,因此不能用纵波速度分析法对转换波进行分析。本文提出的在纵向上接深度变化、而在横向上作变速抽道的转换波叠加速度谱分析方法,避开了转换波反射的不对称性和信号到达时间的非双曲线特征所带来的困难,使转换波的速度精确分析成为现实。应用本文方法对92LYS501测线实际转换渡地震数据进行处理,获得了比较理想的效果。

 
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