Figure 5
From: Identification of natural and anthropogenic signals in controlled source seismic experiments
Seismic record of the waves generated by five vehicles moving along the seismic profile during a 40–50 min interval (traces C824-C829). Red lines mark vehicles moving southward and green lines those moving northward. The recording stations were installed along an unpaved road giving access to mountain areas and therefore, the low apparent velocities observed, ranging between 23 and 30 km/h seem reasonable.
