id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
esrj-21199	Imhof, Luis Armando; Santamarina, Juan Carlos	SEISMIC VELOCITY DETERMINATION IN GRAVEL AND SANDS USING PIEZOCRYSTALS	2008	12	.pdf	application/pdf	4114	215	60	Consid- ering a velocity of propagation VP~140 m/s: wavelength Vp f m s s m mm� � � � �) 140 40001 0035 35 / / . Conclusions General purpose piezocrystals (disk cells) can be adapted for the construction of transducers to gener- ate and detect seismic P waves at laboratory scale us- ing soil samples (gravel and sands), in the range of frequencies that allows an appropriate balance be- tween resolution and penetration.	cache/esrj-21199.pdf	txt/esrj-21199.txt