1887
Volume 4 Number 4
  • ISSN: 1569-4445
  • E-ISSN: 1873-0604

Abstract

ABSTRACT

The effects of climate, pollution and human negligence cause severe and sometimes irreversible damage to buildings and monuments of cultural interest. It is well known that the presence of water and/or moisture content in a porous material is the initial cause of deterioration. In a previous paper, the authors reported an integrated study on a building of cultural importance, namely the crypt of the Cattedrale di Otranto in Apulia, Italy, based on non‐destructive integrated biological and physical surveys. The method described was able to identify the ‘internal’ factors responsible for deterioration. It was discovered that the distribution of moisture in the stone depended mainly on adverse environmental conditions, and the presence of wet buried structures in the ground.

The first aim of the present study was to identify subsurface water‐content in this same crypt using a ground‐penetrating radar (GPR) technique, and to compare these results with those of the previous microclimatic survey. In particular, the existence of underground discontinuities was verified; we located them and analysed their influence. Moreover, by means of velocity analysis, we obtained a quantitative estimate of the volumetric water‐content under the pavement of the crypt. This finding completes the results of the previous research, as it indicates the causes of the deterioration in the crypt and provides significant information, on the basis of which, effective decisions can be made for safeguarding the historic building.

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2005-07-01
2024-04-20
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References

  1. AnnanA.P., ScaifeJ.E. and GiamouP.1990. Mapping buried barrels with magnetics and ground penetrating radar.60th SEG Meeting, San Francisco, USA, Expanded Abstracts, 422–423.
    [Google Scholar]
  2. BaerN.S. and SnethlageR.1996. Saving Our Architectural Heritage. The Conservation of Historic Stone Structures.John Wiley & Sons, Inc.
    [Google Scholar]
  3. CamuffoD.1998. Microclimate for Cultural Heritage.Elsevier Science Publishing Co.
    [Google Scholar]
  4. CataldoR., De DonnoA., De NunzioG., LeucciG., NuzzoL. and SivieroS.2005. Integrated methods for analysis of deterioration of cultural heritage: the CRYPT of “CATTEDRALE DI OTRANTO”. Journal of Cultural Heritage,6, 29‐38.
    [Google Scholar]
  5. ConyersL.B. and GoodmanD.1997. Ground‐penetrating Radar – An Introduction for Archaeologists.Alta Mira Press, Walnut Creek.
    [Google Scholar]
  6. DavisJ.L. and AnnanA.P.1989. GPR for high resolution mapping of soil and rock stratigraphy. Geophysical Prospecting37, 531–551.
    [Google Scholar]
  7. DuS. and RummelP.1994. Reconnaissance studies of moisture in the subsurface with GPR. Proceedings of the 5th International Conference on Ground Penetrating Radar, pp. 1224–1248.
    [Google Scholar]
  8. EndreaA.L. and KnightR.1992. A theoretical treatment of the effect of microscopic fluid distribution on the dielectric properties of partially saturated rocks. Geophysical Prospecting40, 307–324.
    [Google Scholar]
  9. FruhwirthR.K., SchmollerR. and OberaignerE.R.1996. Some aspects of the estimation of electromagnetic wave velocities.Proceedings of the 6th International Conference on Ground Penetrating Radar,Tohoku University, Sendai, Japan, pp. 135–138.
    [Google Scholar]
  10. GrandjeanG., GourryJ.C. and BitriA.2000. Evaluation of GPR techniques for civil‐engineering applications: study on a test site. Journal of Applied Geophysics45, 141–156.
    [Google Scholar]
  11. GrasmueckM.1996. 3‐D ground‐penetrating radar applied to fracture imaging in gneiss. Geophysics61, 1050–1064.
    [Google Scholar]
  12. GreavesR.J., LesmesD.P., LeeJ.M. and ToksözN.1996. Velocity variations and water content estimated from multi‐offset, ground‐penetrating radar. Geophysics61, 683–695.
    [Google Scholar]
  13. HuismanJ.A., HubbardS.S., RedmanJ.D. and AnnanA.P.2003. Measuring soil water content with ground penetrating radar: A review. Vadose Zone Journal2, 476–491.
    [Google Scholar]
  14. LeucciG.2004. I metodi elettromagnetico mpulsivo, elettrico e sismico tomografico a rifrazione per la risoluzione di problematiche ambientali: sviluppi metodologici e applicazioni. PhD thesis, University of Messina.
    [Google Scholar]
  15. LeucciG., NegriS., CarrozzoM.T. and NuzzoL.2002. Use of ground penetrating radar to map subsurface moisture variations in an urban area. Journal of Environmental and Engineering Geophysics7(2), 69–77.
    [Google Scholar]
  16. MelletJ.S.1995. Ground penetrating radar applications in engineering, environmental management, and geology. Journal of Applied Geophysics33, 157–166.
    [Google Scholar]
  17. MillerJ.D., HaisleyP.D. and ReinhardtJ.H.2000. Air sampling result in relation to extent of fungal colonization of building materials in some water‐damaged buildings. Indoor Air10, 146–151.
    [Google Scholar]
  18. SageJ.D.1988. Thermal microfracturing of marble. In: Engineering Geology of Ancient Works, Monuments and Historical Sites (eds P.G.Marinos and G.C.Koukis ), pp. 1013–1018. Balkema, Rotterdam.
    [Google Scholar]
  19. SandmeierK.J.2003. Reflexw 3.0 Manual.Sandmeier Software, Zipser Straße 1, D‐76227 Karlsruhe, Germany.
    [Google Scholar]
  20. SigurdssonT. and OvergaardT.1998. Application of GPR for 3‐D visualization of geological and structural variation in a limestone formation. Journal of Applied Geophysics40, 29–36.
    [Google Scholar]
  21. ToppG.C., DavisJ.L. and AnnanA.P.1980. Electromagnetic determination of soil water content: measurements in coaxial transmission lines. Water Resources Research16(3), 574–582.
    [Google Scholar]
  22. ValleS., ZanziL. and LenziG.2000. 2D and 3D focusing of Ground Penetrating Radar data for NDT.Proceedings of the 8th International Conference on Ground Penetrating Radar,Gold Coast, Australia, pp.
    [Google Scholar]
  23. ZanziL. and ValleS.1999. Elaborazione di dati GPR 3D per la ricerca di mine antiuomo.Atti del 18° Convegno Nazionale del Gruppo Nazionale di Geofisica della Terra Solida,Rome, Italy. (Available at the website: ftp://www.dinma.univ.trieste.it/pub/gngts/1999/Sessioni_Ordinarie/04/lzanzi‐2.doc).
    [Google Scholar]
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