1887
Volume 1 Number 2
  • ISSN: 1569-4445
  • E-ISSN: 1873-0604

Abstract

ABSTRACT

The San Fratello area in the Nebrodi Mountains (northern Sicily) is a region of high instability. It has suffered many devastating occurrences, which have hit and destroyed the village of San Fratello. At present the area is still subject to a high landslide risk.

A series of geophysical surveys have been carried out with the aim of determining the thickness and dimensions of the landslide body as well as some tectonic features, in order to gain insight into the evolution of the landslide. The following geophysical techniques have been used: borehole seismic tomography, i.e. down‐hole tomographic seismic soundings (DH TSS), time‐domain electromagnetic (TDEM) soundings and georadar profiling (GPR). An additional objective was to compare the efficiency of the geophysical methods used in real geological, morphological and logistic situations.

The data obtained using seismic tomography outlined the shape and the thickness of the body of the landslide in the scar and track area, as well as some mechanical characteristics of the formations involved in the movement. TDEM soundings provided a little additional information on the upper 5–10 m. Georadar profiles supplied some information about the locations of some lateral lithological changes.

Finally the information obtained with the various geophysical techniques was used to provide an outline of the history of the area.

Loading

Article metrics loading...

/content/journals/10.3997/1873-0604.2002009
2002-11-01
2020-04-04
Loading full text...

Full text loading...

References

  1. AmicoV.1757. Dizionario topografico della Sicilia (translation from Latin by G.Di Marzo , 1855). Palermo1, 449–451.
    [Google Scholar]
  2. BellittoF., Di MaggioC. and MacalusoT.1995. Aspetti geomorfologici dei fenomeni di instabilità dei versanti di San Fratello. Naturalista Sicil.S. IV, 19 (3‐4), 189–205.
    [Google Scholar]
  3. CarraraA., D’EliaB. and SemenzaE.1985. Classificazione e nomenclatura dei fenomeni franosi. Geol. Appl. e Idrogeol.20, II,223–243.
    [Google Scholar]
  4. CrinòS.1921. Distribuzione geografica delle frane in Sicilia e periodi di maggiore frequenza dei franamenti. L’Universo, Firenze II, 6:447, 1. Carta della distribuzione delle frane 1: 800.000.
    [Google Scholar]
  5. CrinòS.1922. La frana di San Fratello. Riv. Geogr. It., Firenze29, fasc.1‐2,63–66.
    [Google Scholar]
  6. Nabighian, M.N. and Macnae, J.C., 1991. Time‐domain electromagnetic prospecting methods. In: Electromagnetic Methods in Applied Geophysics (ed. M.N.Nabighian ), Vol 2A, pp. 427–520. Society of Exploration Geophysicists, Tulsa.
    [Google Scholar]
  7. NigroF.1994. Note illustrative alla carta geologica del settore occidentale di affioramento dell’Unità Longi‐Taormina (M.ti Nebrodi, Sicilia NE). Riv. Min. Sicil. N.6 – 1994, 31–42.
    [Google Scholar]
  8. PaigeC.C. and SaundersA.M.1982. LSQR: an algorithm for sparse linear equations and sparse least squares. ACM Transactions on Mathematical Software8 (1), 43–71.
    [Google Scholar]
  9. TruilletR.1968. Étude géologique des Péloritains orientaux Sicile. PhD thesis, University of Paris, 441.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.3997/1873-0604.2002009
Loading
/content/journals/10.3997/1873-0604.2002009
Loading

Data & Media loading...

  • Article Type: Research Article
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error