The discovery of abnormal pre-seismic phenomena, a great leap in perceptual knowledge.
震前异常现象的发现具有极高的科学价值，是感性认识上的重大飞跃。
So far, China had further accumulated the world's richest data on pre-seismic abnormal phenomena, extracted numerous important precursors usable for seismic forecast.
迄今，中国更加广泛地累积了世界最丰富的震前异常资料，从中提炼出了许多重要的、可望用于预报的前兆。
Field surveys and seismic exploration show that the lowest regional angular unconformity older than the Carboniferous developed between the Cretaceous and the pre-Cretaceous strata.
地表地质调查和人工地震勘探结果证实，石炭纪以来最早的区域性角度不整合发育于白垩系与前白垩纪地层之间。
Moreover, some pre-phase preparation had done for analyses the whole process of seismic damage of damage system.
此外，为损伤结构破坏全过程分析做了前期工作。
Based on plane wave decomposition, We propose a wave-equation depth migration method for pre-stack seismic data.
提出了一套基于平面波分解的波动方程叠前地震数据深度偏移方法。
A new method based on well logging data and pre-stack seismic inversion parameters, which is called pore bulk modulus method, is presented to quantitatively calculate pore fluid saturation.
提出了一种基于测井数据和叠前地震反演参数的流体饱和度定量预测方法——孔隙体积模量法。
The feasibility and effective of the multi-radial mid-value filtering have been verified through some model data tests and suppressing the surface wave in the practical pre-stack seismic data.
通过模型资料测试，以及近地表反射地震实例叠前资料面波压制试处理研究工作，验证了多线束径向中值滤波方法的可行性和实用性。
But to layered strata, the seismic wave path is complicated when reservoir changes, and it is difficult to directly define vertical time difference by pre stack far offset seismic data.
对于层状介质，油藏变化前后的地震波传播路经比较复杂，其激发点和接受点发生了变化，要想用叠前远偏移距数据直接计算垂直时差比较困难。
The technique of seismic pre-stack depth migration is used to correctly implement the complex structural imaging.
采用地震造前深度偏移技术，使复杂构造正确成像。
By use of precursory deformation information and post-seismic effect some earthquakes are analysed and the potential source zones in 3-5 years are pre-estimated.
利用地震前兆形变信息和震后效应进行了地震震例分析。并对3 ~5年内的潜在震源区进行了预估。
It seems unlikely that these animals could have detected seismic "pre-shocks" that were missed by the sensitive vibration-detecting equipment that clutters the world's earthquake laboratories.
连全世界的地震实验室里摆放着的精密的震动监测仪都无法测出的地震前震，似乎也不会被动物所察觉。
The test result indicates that this instrument can accomplish the functions like data acquisition and data pre-treatment to seismic waves.
测试结论表示该仪器可以较好完成对地震波信号白勺采集和数据预处理白勺功能。
The test result indicates that this instrument can accomplish the functions like data acquisition and data pre-treatment to seismic waves.
测试结论表示该仪器可以较好完成对地震波信号白勺采集和数据预处理白勺功能。
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