Onland recording of the LISA profile. (a) Onland recording represented using a velocity reduction of 8 km s⁻¹ and a correction of the bathymetric effect. From 45 to 100 km, undulations caused by the salt are observed. (b)  Onland recording represented using a velocity reduction of 8 km s⁻¹ and the main phases. The black lines represent the traveltime calculated with the final model from Fig. 13(a).