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三分量记录为地震波引起的质点运动轨迹的研究,提供了一个途径。这种三维图象展示了复杂现象的来龙去脉。不过,质点运动轨迹有其主要极化方向。本文描述空间定向滤波的一个方法,以计算质点运动轨迹的极化方向。该方法是这样应用的:质点运动极化方向和参考方向如 X、Y、Z 之间的夹角大于给定的阈值角时,舍去这些部分,根据这个方法取得的实际数据,转成彩色显示,即可表示每个波列的极化方向。使用两个不同的震源产生的相同的噪声分布可用三分量检波器记录下来。这两个震源是 SH 波可控震源和 Marthor SH 波重锤震源,IFP 商标。运用阈值角从0变到90度的空间定向滤波法,就可以估算出每个主方向 X、Y、Z 发射的相应能量。本文绘出了许多曲线图,以便比较两种震源的特性,以及计算作为(1)发射能量和(2)局部传播效应函数的 X、Y、Z 方向上的接收能量。
The three-component recording provides a way to study the motion trajectories of particles caused by seismic waves. This three-dimensional image shows the ins and outs of complex phenomena. However, particle trajectories have their main direction of polarization. This article describes a method of spatial orientation filtering to calculate the direction of polarization of particle motion trajectories. The method is applied as follows: When the angle between the direction of polarization of the particle motions and the reference direction such as X, Y, Z is greater than the given threshold angle, these parts are discarded and the actual data obtained by this method are converted into color Display, you can indicate the direction of polarization of each wave train. The same noise distribution generated using two different sources can be recorded with a three-component detector. These two sources are SH-wave vibroseis and Marthor SH-wave hammer sources, IFP trademarks. Using space-oriented filtering with a threshold angle from 0 to 90 degrees, the corresponding energy emitted by each of the main directions X, Y, Z can be estimated. This paper plots many plots to compare the characteristics of the two hypocenters and to calculate the received energy in the X, Y, Z directions as a function of (1) emission energy and (2) local propagation effects.