Low Frequency Seismic Energy

What Does Low Frequency Seismic Energy Mean?

低频地震能量是在1至10Hz的低频范围内产生的地震能量。在进行地震折射调查的同时，根据所需的渗透深度和普遍的位点状况，通过表面上的地震源产生低频地震能量，这是由锤子板，水牛枪或重量下降的抗震源产生。

Seismic refraction is one of the methods of geophysics used to investigate subsurface ground conditions for trenchless operations. It utilizes seismic waves sourced from the ground surface.

365金博宝TroohlessPedia解释了低频地震能量

The velocity of seismic waves depends on density elastic moduli. The data obtained by seismic refraction is processed to interpret and produce models of seismic velocity and layer thickness of sub-surface ground structures. As the seismic waves propagate downward, they are reflected or refracted off layers in the subsurface and picked up by geophones.

由于地球吸收了比低频能量波更容易吸收高频能量，因此大多数折射地震仪具有4个循环/秒的固有频率。低频系统还可以帮助找到使用电磁电阻率测试的大型空腔，例如矿山和洞穴。

三维电磁电阻率调查可用于生产地下区域和地质特征的高分辨率图像。