Observed at high-frequency PPP PKP PKS PKPPKP PcS ScS PS P PP PPP S PKPPcP SKS SKKSPKKP PKPPKS PKPSKS PcP All phases shown for distance ranges imaged in global stacks PP Astiz, L., Earle, P. and...

Assignment
Q2.
a) In order to identify surface waves, The P wave will be the first wiggle that is bigger than the
rest of the little ones (the microseisms). These tiny microseisms can be caused by heavy
traffic near the seismograph, waves hitting a beach, the wind, and any number of other
ordinary things that cause some shaking of the seismograph. The second big wiggle will be S
waves and just after that there will be surface waves.
The surface waves (Love and Rayleigh waves) are the other, often larger, waves marked on
the seismogram
b) The first seismic arrival time=19.55 minutes
Surface waves beginning time=45.05 minutes
The elapsed time between first seismic arrival and the beginning of the surface wave...