“…For near‐surface characterizations, fluid saturation is of interest in environmental and hydrologic studies (Konstantaki et al ., 2013; Solatzzi et al ., 2021), where the P wave velocity, sensitive to λ , is the one of the main indicators between unsaturated and saturated media (Socco and Strobia, 2004). Another point is that the density is the most difficult parameter to resolve (Butzer, 2015), although for our method we were able to successfully resolve the positive and negative density contrasting scatterers with a density only imaging scheme (Harmankaya and Kaslilar, 2019). One approach for multi‐parameter inversion is to consider coupling of these parameters, such as P‐ and S‐wave velocities or their impedances.…”