seismic travel time

2-D crustal poisson ′ s ratio from seismic travel time inversion in Changbaishan Tianchi Volcanic Region

用地震走时反演计算长白山天池火山区二维地壳泊松比

The geophysical inversion methods have been mature since 1970s. These methods include the travel-time inversion and seismic tomography, the waveform inversion and linearized iteration method, the simulated annealing, the genetic algorithms and joint inversion methods.

自20世纪70年代以来，地球物理反演方法已走向成熟，这些方法包括地震走时反演与波场反演、层析成像反演、线性化迭代反演、仿真淬火法反演、遗传算法及联合反演方法等。

The investigation of the earth structure, especially the crust and upper mantle structure from seismic travel time and waveform data is one of basic topics of seismology.

利用地震波的走时及波形数据研究地球深部结构，特别是地壳上地幔结构，是地震学的一个基本课题。

It can describe precisely the cross hole reservoir by using synthetically the kinematic and dynamic features through using travel time and frequency feature of cross hole seismic first break for joint tomographic imaging for seismic velocity of stratum and for Q value.

通过利用井间地震初至波的旅行时及其频率特性进行地层地震速度和岩石Q值的联合层析成像，就可以综合利用地震波的运动学和动力学特征对井间储层进行更精确的描述。

The paper discussed four time-distance curve equation of seismic waves in vertical heterogeneous media; analyzed and compared the errors of ray paths and travel-time curves under the approximation of different velocity function in four layered media models;

本文讨论了四种垂向非均匀介质中地震波的时距曲线方程，分析比较了四类层状介质模型在不同速度函数近似下的射线路径和走时曲线误差；

In addition, in theoretical forward of seismic ray, travel time accuracy determines amplitude accuracy.

另外，在射线理论正演中，旅行时计算的精度也决定着其振幅计算的准确程度。

According to records of 338 earthquakes in recent years by SK seismograph of Tianshui seismic station, a formula of relationship between travel time difference of maximum surface wave from primary wave and epicentral distance is given by least squares method.

根据天水地震台SK地震仪近年来记录的338个震例的资料，用最小二乘法求出最大振幅面波与初至波到时差同震中距的关系式，并与JB表进行了对比。