Inversion of Rayleigh Wave Dispersion Curves via Long Short-Term Memory Combined with Particle Swarm Optimization

Table 2

Model parameters and search range (, , h, ρ represent -wave velocity, S-wave velocity, stratigraphic layer thickness, and stratigraphic density, respectively).

Model	Layers	Parameters				Search range
				ρ	h		h
		(m/s)	(m/s)	(g/cm^3)	(m)	(m/s)	(m)
Model A	1	160	531	2.0	2	80∼240	1∼3
	2	260	862	2.0	3	130∼390	1.5∼4.5
	3	200	663	2.0	5	100∼300	2.5∼7.5
	4	400	1327	2.0	∞	200∼600	∞
Model B	1	200	663	1.9	2	100∼300	1∼3
	2	160	673	1.9	4	80∼240	2∼6
	3	300	1102	1.9	6	150∼450	3∼9
	4	400	1470	1.9	∞	200∼600	∞