The Observation of Microtremors Correlated with the Existence of Cracks at the Landslide Area

Abstract

The observations of microtremors over the Kamenose landslide area were carried out in March and July, 1971. To examine the influence of the cracks existing in this area on the tremor, the observation with three components was applied. The tremors are classified into high frequency type, medium frequency type and low frequency type. The horizontal locus of medium frequency type shows the polarization to the direction perpendicular to crack. And it has been definitely shown that this type of microtremors may be affected strongly by the existence of cracks at the landslide area.