## 5 Conclusions  
During routine geological fieldwork, faults are generally surveyed on topographic and geological maps using a traditional compass-clinometer or, when a high-resolution survey is needed, using a digital device (smartphone o tablet) with a dedicated application. In this paper, we have shown that the use of Fieldmove app for digital devices integrated with the use of drone-acquired imagery is a performing combination, which speedily provides large sets of good-quality data, sensibly improving the topographic and geological models that are subsequently reconstructed. The presented high-resolution aerial survey represents the first attempt to digitally reconstruct recent coseismic fault ruptures in variable geomorphological and outcrop conditions and to compare them with large published datasets collected through traditional and digital mapping. In the study cases, which refer to two active splays of the Vettore-Bove Fault affected by surface faulting during the 2016 Central Italy seismic sequence, we reconstructed the fault traces, the height of the fault scarps, the amount of associated coseismic slip and its along-strike variations, with a precision that is much higher compared to previous literature reconstructions [15; 29; 36; 37; 97]. Figure 13: Comparison of DEM and detailed topographic profile obtained from: (**a**) TINITALY/01 [[http://tinitaly.pi.inye.it/](http://tinitaly.pi.inye.it/)]([http://tinitaly.pi.inye.it/](http://tinitaly.pi.inye.it/))[96] with a resolution of 10 m per pixel; (**b**) Cartografia Tecnica Regionale vectorial 1:5000 scale from Regione Umbria [[[http://www.umbiriagoe.regione.umbria.it/pagina/distribuzione-carta-tecnica-regionale-vettoriale-1-000](http://www.umbiriagoe.regione.umbria.it/pagina/distribuzione-carta-tecnica-regionale-vettoriale-1-000)]([http://www.umbiriagoe.regione.umbria.it/pagina/distribuzione-carta-tecnica-regionale-vettoriale-1-000](http://www.umbiriagoe.regione.umbria.it/pagina/distribuzione-carta-tecnica-regionale-vettoriale-1-000))], with a resolution of 5 m per pixel; (**c**) 1 cm per pixel obtained from this work. For all the aforesaid parameters, the estimated errors range within a few centimeters, a value that is well below the standards required by routine structural geological survey and is also acceptable for precision estimates of coseismic ground deformations. A complete workflow in which the entire procedure is described in detail is reported. It is divided into successive steps specifying all the necessary software and tools to be applied to obtain the topographic model of a study area. Moreover, an assessment of the precision and applicability of point clouds derived by drone imagery is provided and also compared with the performances of the digital and analogic compass-clinometer. Some further possible applications of the reconstructed models on the investigated active fault, f.i. slip rate estimate or reconstruction of the rupture history is described, suggesting possible correlations and integrations with the available paleoseismological data. The results of this work highlight that photogrammetry can cover and improve the map resolution, where necessary, with low-costs compared to more expensive techniques like the LiDAR data acquisition, which are very costly and logistically complex to apply in many locations. In other words, these methodologies can undoubtedly be a significant step forward in geological mapping as well as in structural and geomorphological research. They represent a field of work capable of remarkable development and perspectives in the near future. This research received no external funding. This work presents the main results of a research carried out by the author in the framework of CRUST (Inter-University Center for Tridimensional Seismotectonic Analysis [[https://www.crust.unich.it/](https://www.crust.unich.it/)]([https://www.crust.unich.it/](https://www.crust.unich.it/))) activities, following the 2016 Central Italy Seismic Sequence.