effects of pore collapse and grain crushing on
2 effects of pore collapse and grain crushing on 3 ultrasonic velocities and v p/v s 4 je´roˆme fortin,1 yves gue´guen,1 and alexandre schubnel2 5 received 20 august 2005; revised 13 february 2007; accepted 6 june 2007; published xx month 2007. 6 [1] compressional, shear wave velocities and their ratio, v p/v s, were measured along