id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
esrj-85366	Jiang, Chanjun; Wang, Youxue; Zeng, Gaofu	Group Velocity Measurements of Earthquake Rayleigh Wave by S Transform and Comparison with MFT	2020	5	.pdf	application/pdf	3225	178	62	In this paper, S transform is introduced to measure group velocities of earthquake Rayleigh wave and is compared with the commonly used MFT. Inverse S transform is written as x t s f d e dfi ft( ) = ( )           ++ ∫∫ τ τ −∞ ∞ −∞ ∞ , 2π (4) Comparison with MFT At present, MFT is the most commonly used method to measure group velocities of earthquake Rayleigh wave.	cache/esrj-85366.pdf	txt/esrj-85366.txt