GNGTS 2017 - 36° Convegno Nazionale

100 GNGTS 2017 S essione 1.1 the distribution is quite narrow and centered around 0, while for other events there is a trend indicating automatic location deeper that those derived from manual analysis. Of note, in this test, the propagation model is the same, and such differences must be related to the picking only. Preliminary results. In Fig. 3 a map showing the best-quality automatic preliminary location is presented, together with the stations location (black triangles). In this stage, it is just worth to note that the lowed magnitude seismicity detected by the automatic procedure, appears to completely fill the gaps of events highlighted in the central part of the activated fault system, as shown by Chiaraluce et al . (2017). Fig. 2 - a) Comparison of the automatic picking locations and of the ISIDe catalogue locations. b) Comparison of the automatic picking locations and of the manual picking locations, for the first hours of 9/1/2017.