1) Seismic first arrivals time
地震初至时间
3) first breaks
初至时间
1.
To overcome the shortcomings of traditional static correction, a new method for static correction on ground surface by fitting the first breaks of direct waves using polynomial was put forward.
针对常规静校正方法的不足 ,提出了一种利用多项式拟合单炮记录初至时间作地表静校正的方法 。
2.
On the basis of method presented by predecessor that computing the time of first breaks at fourth point by eikonal equation when knowing the times of fi.
本文在前人提出的已知三点初至时间用程函方程求第四点初至时间的基础上,提出一种新的已知两点初至时间用程函方程求相邻第三点初至时间的计算方法,并将扩展波阵面法与局部算法综合应用,使算法更加稳健。
4) first break time
初至时间
1.
Tomographic static correction technology of Greenmountain is a non-linear inversion method, which inverses the near surface velocity structure by means of first break time and ray path gained by ray-tracing method, calculates the stat.
绿山层析静校正是一种非线性反演技术,利用地震波初至时间和射线路径反演出近地表速度模型,然后求取静校正值,从而消除静校正影响,提高地震剖面的分辨率。
5) seismic first break
地震波初至
1.
Length fractal dimension method for picking seismic first break.;
Length分形维算法拾取地震波初至
补充资料：不至
1.不到。 2.不必。 3.不至于，表示不会出现某种结果。
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