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Tesi etd-09202023-150618


Tipo di tesi
Tesi di laurea magistrale
Autore
WELDEGERGIS, MEHARI YOHANNES
URN
etd-09202023-150618
Titolo
PERFORMANCE OF FULL-WAVER SYSTEM IN DEEP ELECTRICAL RESISTIVITY TOMOGRAPHY FOR SUBSURFACE CHARACTERIZATION IN THE COSTERMANO AREA, LAKE GARDA.
Dipartimento
SCIENZE DELLA TERRA
Corso di studi
GEOFISICA DI ESPLORAZIONE E APPLICATA
Relatori
relatore Prof. Ribolini, Adriano
Parole chiave
  • Sirmione fault
  • Sant'Ambrogio fault
  • Castermano area
  • resistivity
  • ERT
  • inversion
  • Full-Waver
  • Electrical
Data inizio appello
20/10/2023
Consultabilità
Non consultabile
Data di rilascio
20/10/2063
Riassunto
This thesis discovers the performance of the deep electrical resistivity tomography by applying a full-waver system and integrating it with the seismic reflection method applied in the same area of investigation. Data acquisition involves thorough survey design using the Full-waver system for deep investigation, data collection is conducted by injecting electrical currents into the ground and measuring voltage responses, and Synchronization via GPS technology in challenging terrains. and data processing using Geostudi Astier s.r.l's ERTlab studio software.
The comparative analysis with seismic reflection surveys confirms DERT's reliability in delineating subsurface structures and tectonic discontinuities, such as the Valpolicella Fault - Sant'Ambrogio and Sirmione faults. This research targets how performed the DERT method to characterize the subsurface of the investigation area and asses it’s contribution to environmental geohazards and geothermal potential, applying the Full-Waver DERT method in the area was lacking. The Valpolicella – Sant'Ambrogio Fault indicated by the geophysical survey is segmented along the route, with portions coinciding with what is reported in other findings and, conversely, parts displaced by 100-200 meters in NE direction and in the south direction of the investigation area it is observed that the presence of the Sirmione fault and limestone reservoir’s favoring potential research activities. Therefore, this area of investigation is in need of further and deep geophysical investigation.
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