The Matched Field Processing approach is evaluated and was applied in the geophysical context. Synthetic tests were performed using Finite Difference Modelling that show the resolution of the approach considering different environmental setups. Matched Field Processing was applied to two field data sets. On the Hartousov Mofette Field (NW Bohemia/Vogtland region, Czech Republic) it was used to locate subsurface fluid channels and to investigate their spatio-temporal variations. On the Gornergletscher (Canton Valais, Switzerland) it was applied to monitor lake drainage from the ice-marginal lake Gornersee and to locate accompanying water tremor sources.