The mosaics of Delos island are a significant body of the ancient Greek art of the Hellenistic period that are inscribed to UNESCO’s World Heritage List. In this study, GPR systems with frequencies of 1600MHz, 500MHz and 250MHz are used to evaluate the stratigraphic condition of the mosaic at house of the Dolphins that decorates the peristyle impluvium. All the obtained data were processed in MATLAB and both Bscans and depth slices were used for the interpretation. The 1600MHz system performed the best and it was possible to identify the boundaries of the mosaic layers as well as problematic areas, such as bulges and high levels of moisture that may cause deterioration. The results obtained from the 500MHz and 250MHz are complimentary to the ones obtained from the high frequency system as the emitted signals can reach deeper levels. Structural characteristics of the cistern below the main mosaic floor were mapped in some detail including five stone arches. The overall performance of the GPR was satisfactory and the resulted information will be taken into account for the upcoming conservation plans.


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  1. F.Licenziati and T.Calligaro
    , “Study of mosaic glass tesserae from Delos, Greece using a combination of portable u-Raman and X-ray fluorescence spectrometry,” J. Archaeol. Sci. Rep., vol. 7, pp. 640–648, Jun. 2016.
    [Google Scholar]
  2. E.Bourguignon and E.Carbonara
    , “Illustrated glossary: technician training for the maintenance of in situ mosaics,” Getty Conserv. Inst., pp. 33–52, 2013.
    [Google Scholar]
  3. A.Calia, M.Lettieri, G.Leucci, L.Matera, R.Persico, and M.Sileo
    , “The mosaic of the crypt of St. Nicholas in Bari (Italy): integrated GPR and laboratory diagnostic study,” J. Archaeol. Sci., vol. 40, no. 12, pp. 4162–4169, Dec. 2013.
    [Google Scholar]
  4. A.Moropoulou, A.Bakolas, M.Karoglou, E. T.Delegou, K. C.Labropoulos, and N. S.Katsiotis
    , “Diagnostics and protection of Hagia Sophia mosaics,” J. Cult. Herit., vol. 14, no. 3, pp. e133–e139, 2013.
    [Google Scholar]
  5. P.Côte, X.Dérobert, A.Miltiadou-Fezans, N.Delinikolas, and N.Minos
    , “Mosaic-grouting monitoring by ground-penetrating radar,” in Structural Analysis of Historical Constructions-2 Volume Set: Possibilities of Numerical and Experimental Techniques-Proceedings of the IVth Int. Seminar on Structural Analysis of Historical Constructions, 10–13 November 2004, Padova, Italy, 2004, p. 401.
    [Google Scholar]
  6. E.Ftikou, P.Theodorakeas, E.Cheilakou, and M.Koui
    , “Long-Term and Sustainable Approach to Preserve Ancient Mosaic Heritage: The Case Study of Mosaic Pavement Located at the ‘Sanctuary of Pan,’ Pnyka (Athens),” in International Symposium on the Conservation of Monuments in the Mediterranean Basin, 2017, pp. 105–113.
    [Google Scholar]
  7. A.Tzanis
    , “Matgpr: A freeware matlab package for the analysis of common-offset GPR data,” in Geophysical Research Abstracts, 2006, vol. 8.
    [Google Scholar]
  8. S. N.Spanoudakis and A.Vafidis
    , “GPR-PRO: A MATLAB module for GPR data processing,” in 2010 13th International Conference on Ground Penetrating Radar (GPR), 2010, pp. 1–5.
    [Google Scholar]

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