Development of high-speed sampling seismic recording system, 2

Yamanaka, Yoshiaki*; Murata, Kazunori*

no journal, , 

A seismic survey for travel time tomography was performed with a high-speed sampling seismic recorder at 500m stage of Mizunami Underground Research Laboratory (MIU). High speed sampling data of seismic wave enables a travel time tomography to estimate an accurate seismic velocity distribution when a target is located near surface. We could observe a clear arrival of p wave by using high speed sampling recorder though the seismic wave of granite at 500m stage is very fast.