Coda Q And Site Effect Of Mine Tremors

Recordings of mining induced tremors at increasing distances from the gold<br>mining region south of Carletonville were used to determine the seismic<br>quality factor Q.<br>This Q, used as a measure of attenuatlon, was determined independently for<br>a number of seismic stations along two azimuths, traversing vastly<br>different geologies. The small tremors that were used (ML<3,0) were all<br>observed at distances of less than 80 km and the Q was determined using a<br>version of the coda delay technique proposed by Aki (1969).