| Title: |
Airborne Strapdown Gravity Survey of Sos Enattos Area (NE Sardinia, Italy): Insights into Geological and Geophysical Characterization of the Italian Candidate Site for the Einstein Telescope |
| Authors: |
Muccini F.; Greco F.; Cocchi L.; Marsella M.; Zanutta A.; Borghi A.; Cagnizi M.; Carbone D.; Coltelli M.; Contrafatto D.; D'Aranno P. J. V.; Frasca L.; Messina A. A.; Mirabella L. T.; Negusini M.; Rivalta E. |
| Contributors: |
Muccini, F.; Greco, F.; Cocchi, L.; Marsella, M.; Zanutta, A.; Borghi, A.; Cagnizi, M.; Carbone, D.; Coltelli, M.; Contrafatto, D.; D'Aranno, P. J. V.; Frasca, L.; Messina, A. A.; Mirabella, L. T.; Negusini, M.; Rivalta, E. |
| Publication Year: |
2025 |
| Collection: |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
| Subject Terms: |
strapdown inertial measurement; Sardinia island; gravitational wave observatory; EGM2008 model; forward modeling |
| Description: |
Strapdown gravity systems are increasingly employed in airborne geophysical exploration and geodetic studies due to advantages such as ease of installation, wide dynamic range, and adaptability to various platforms, including airplanes, helicopters, and large drones. This study presents results from an airborne gravity survey conducted over the northeastern sector of Sardinia (Italy), using a high-resolution strapdown gravity ensuring an accuracy of approximately 1 mGal. Data were collected at an average altitude of 1800 m with a spatial resolution of 3.0 km. The survey focused on the Sos Enattos area near Lula (Nuoro province), a candidate site for the Einstein Telescope (ET), a third-generation gravitational wave observatory. The ideal site is required to be geologically and seismically stable with a well-characterized subsurface. To support this, we performed a new gravity survey to complement existing geological and seismic data aimed at characterizing the mid-to-shallow crustal structure of Sos Enattos. Results show that the strapdown system effectively detects gravity anomalies linked to crustal sources down to similar to 3.5 km, with particular emphasis within the 1-2 km depth range. Airborne gravity data reveal higher frequency anomalies than those resolved by the EGM2008 global gravity model and show good agreement with local terrestrial gravity data. Forward modeling of the gravity field suggests a crust dominated by alternating high-density metamorphic rocks and granitoid intrusions of the Variscan basement. These findings enhance the geophysical understanding of Sos Enattos and support its candidacy for the ET site. |
| Document Type: |
article in journal/newspaper |
| File Description: |
ELETTRONICO |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/wos/WOS:001527233800001; volume:17; issue:13; firstpage:1; lastpage:22; numberofpages:22; journal:REMOTE SENSING; https://hdl.handle.net/11585/1022780 |
| DOI: |
10.3390/rs17132309 |
| Availability: |
https://hdl.handle.net/11585/1022780; https://doi.org/10.3390/rs17132309; https://www.mdpi.com/2072-4292/17/13/2309 |
| Rights: |
info:eu-repo/semantics/openAccess ; license:Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY) ; license uri:iris.PUB15 |
| Accession Number: |
edsbas.902E3B9C |
| Database: |
BASE |