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| Titel |
Integrated geophysical surveys to assess the structural conditions of a karstic cave of archaeological importance |
| VerfasserIn |
G. Leucci, L. Giorgi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 5, no. 1 ; Nr. 5, no. 1 (2005-01-03), S.17-22 |
| Datensatznummer |
250002187
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| Publikation (Nr.) |
 copernicus.org/nhess-5-17-2005.pdf |
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| Zusammenfassung |
| An integrated geophysical survey using both the electrical resistivity
tomography (ERT) and ground-penetrating radar (GPR) methods was undertaken
over a cave of great archaeological interest in southern Italy. The survey
was performed to assess the stability of the carbonate rock roof of the
cave. A geophysical survey was preferred to boreholes and geotechnical tests,
in order to avoid the risk of mass movements. The interpretation of
integrated data from ERT and GPR resulted in an evaluation of some of the
electromagnetic (EM) characteristics (such as the EM wave velocity) and the
detection of discontinuities (fractures) in the carbonate rock. It is well
known that rock fractures constitute a serious problem in cave maintenance,
and progressive cracking within the bed rock is considered to be one of the
main causes of collapse. An analysis of the back-scattered energy was also
required for the GPR data interpretation. Cracks within the bedrock were
detected to a depth of about 2 m by using GPR, which allowed for the
identification of the loosened zone around the cave. |
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