prestack migration中文是什么意思

• 叠前偏移

• constant-velocity prestack migration    常速叠前偏移
• prestack partial migration    叠前部分偏移
• velocity independent prestack migration    与速度无关的叠前偏移
• prestack f-k migration method    叠前频率
• prestack inversion    叠前反演
• in migration    国内人口迁移
• in-migration    国内人口迁移；向内人口迁移; 移来
• migration    n. 1.移住，迁移；移动；徙动。 2.(鸟)移栖，迁徙；(鱼)洄游；(植物)侵移。 3.移住者群，移栖群。 4.【化、物】原子移动；电离子的移动。
• prestack born inversion    叠前博恩反演
• prestack layer replacement    叠前层替换
• prestack synthetic seismogram    叠前合成地震记录
• acid migration    酸移转
• acyl migration    酰基转移作用
• additive migration    添加剂迁移
• adhesive migration    胶粘剂的迁移
• adult migration    成年洄游; 成育洄游
• age migration    年龄侵移
• agent of migration    迁移动力
• alimental migration    觅食洄游; 取食[索饵]回游; 取食回游
• allylic migration    烯丙型迁移
• anadromous migration    溯河回游。
• animal migration    动物的迁移; 动物迁移
• anodic migration    正极移行
• arc migration    电弧发光率; 电弧移动
• atomic migration    原子迁移

• Migration velocity analysis and prestack migration of ground-penetrating radar
  地质雷达资料的偏移速度分析和叠前偏移
• prestack migration is performed by reverse-time migration method based on maxwell's equations using time-domain finite-difference method
  叠前偏移用时间域有限差分求解麦克斯韦方程组的逆时偏移方法实现。
• Numerical migration for typical models show that, in contrast to ray method, prestack wave motion migration can correctly image inhomogeneous media, and suppress multiple reflection wave effectively . prestack migration method presented in this paper should be developed to apply in observational teleseismic p waveform data, to study the inhomogeneity of crust and upper mantle
  典型的介质模型数值分析表明，与射线方法相比，接收函数的波动方程叠前偏移能对横向非均匀介质准确成像，不仅有较高的分辨率，而且对多次波有较明显的压制作用。
• Moreover, a series of solution to these difficulties are brought forward : applying the theory of fold related to fault to interpret complex structural belts in piedmont : analyzing the features of the surface and underground seismic reservoir prediction and porosity model construction to predicate effectively the texture and quality of sandbodies; using structural model to direct the construction of velocity model and process prestack migration imaging of seismic data; utilizing interval velocity to forecast reservoir pressure : improving the drilling technology for pressure detection and prompt protection of vertical well against incline well
  并针对主要难点提出了解决对策：正确应用断层相关褶皱理论解释山前复杂改造、开展地表井下地震储层与孔隙建模有效预测砂体结构与质量，利用有效构造建模指导速度建模与叠前偏移成像、开展层速度预测地层压力与钻井压力检测及快速防斜打直配套钻井技术攻关等。
• prestack migration method, based on wave motion equation, is also developed for receiver function, and compared with ray method . both p-to-s conversion wave and direct p phase contained in receiver function are migrated and imaged by reverse-time migration for data gather including all receiver functions recorded in all seismological stations for one event, and imaging profile is finally obtained by stacking for all events
  本文还在接收函数射线反投影叠加成像的基础上，提出了一种基于波动方程的接收函数叠前偏移成像方法，将同一事件接收函数中的转换波和直达p波震相以各自的速度向深度方向逆时延拓成像，并通过不同慢度接收函数的叠加，得到最终的偏移成像结果。
• The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it, and the method of small group intervals, small offset, much more channels, short array length, high-frequency receivers are applied during the link of data acquisition, and that the techniques of the refraction static correction, the noise suppressing, the high-resolution velocity analysis, the wavelet length compression, the wavelet zero-phase, and the prestack migration should be applied emphasizedly during the link of data processing and interpretation
  研究表明，对于城市活断层的抗干扰高分辨率浅层地震勘探，在数据采集环节应采用具有线性或非线性变频扫描功能的可控震源和与其相匹配的地震仪器，以及小道间距、小偏移距、多接收道、短排列和高频检波器接收的工作方法；在数据处理与解释环节，要重视折射静校正技术、噪声压制技术、高精度速度分析技术、子波压缩技术、子波零相位化技术和叠前偏移技术等的应用。
• The migration results of the synthetic and ocean field datasets show that this method is correct and effective . several prestack depth migration methods are proposed and unified to the synthetic source record migration method . these methods include plane wave migration with fourier finite difference ( ffd ) extrapolator, maximum energy plane wave migration and prestack migration with phase encoding of areal shot records
  通过对本文提出的平面波傅立叶有限差分叠前深度偏移方法、最大能量面炮记录叠前深度偏移方法和相位编码面炮记录叠前深度偏移方法的研究，试算和对比，提出了合成震源三原则，根据这些原则，提出了合成震源概念和合成震源记录叠前深度偏移方法。