1,721,014 research outputs found

    Analysis of the Correlation between Lineaments and Earthquake Epicenters in the Marche Region (Italy) Using Remote Sensing Tools

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    Earthquake prediction and monitoring of seismic activity remains one of the most difficult problems in the geosciences. Progress in the study of dangerous geological processes is closely related to the use of remote sensing materials (RSMs), which make it possible to identify and analyze relationships, rank different geological structures, etc. In this regard, today the development of new approaches to the study of earthquakes and their forecasting using GIT based on RS< and software for their processing is widely used. One of the promising areas of research is the study of decipherable networks of lineaments on satellite images

    UAV assisted geological mapping: application to stratigraphy and structural survey

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    Following previous researches and experiences (Casella et al., 2017; Martinez et al, 2017; Nieminski et al. 2017), some experimental tests were carried out during Digital Geological Survey (Geological Sciences MSc.) and Geomatics (Applied Information technology BSc) courses at Urbino University. During the last year field activities students and researchers tested the use of UAV (unmanned aerial vehicle) both commercial (DJI Phantom 3) and in-house built machine. Because of the reliability, we choose to perform our survey tests using the commercial one.After having digital field mapped an Apennines area where the Miocene turbidite Marnoso Arenacea Formation crops out (Marche- Tuscany border), we choose to fly on top of two already tape measured stratigraphic sections. After some flight we were able to built orthophotos and DEM with points clouds (using Agisoft Photoscan) that could be imported in QGIS 3.0 where we measured the stratigraphic columns, highlighting bedding and key strata. As pros of tape measurement is the direct contact with bedding allowing more accurate observations. In the other side, as cons, the unsafe measurement on vertical cliffs (performed with climbing techniques) can be avoided with reliable remote measurements without noticeable deviations.Moreover we tried to build a 3D geological model of a quite complex triangle zone associated to a main thrust. The UAV flew manually controlled along a creek where the deformed and faulted beds crop out. The very detailed points cloud allowed to draw and build an interpretative model
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