ADGEO Advances in Geosciences ADGEO Adv. Geosci. 1680-7359 Copernicus Publications Göttingen, Germany 10.5194/adgeo-24-69-2010 Integration of ground-penetrating radar, ultrasonic tests and infrared thermography for the analysis of a precious medieval rose window Nuzzo L. 1 Calia A. 2 Liberatore D. 3 Masini N. 4 Rizzo E. 5 Ingegneria dei Sistemi LTD – IDS (UK), Fareham, Hampshire, UK Istituto Beni Archeologici e Monumentali, IBAM-CNR, Lecce, Italy Dipartimento di Ingegneria Strutturale e Geotecnica, University of Rome "La Sapienza", Italy Istituto Beni Archeologici e Monumentali, IBAM-CNR, Tito Scalo (PZ), Italy Istituto di Metodologie per l'Analisi Ambientale, IMAA-CNR, Tito Scalo (PZ), Italy 15 04 2010 24 69 82 Copyright: © 2010 L. Nuzzo et al. 2010 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://adgeo.copernicus.org/articles/24/69/2010/adgeo-24-69-2010.html The full text article is available as a PDF file from https://adgeo.copernicus.org/articles/24/69/2010/adgeo-24-69-2010.pdf

The integration of high-resolution, non-invasive geophysical techniques (such as ground-penetrating radar or GPR) with emerging sensing techniques (acoustics, thermography) can complement limited destructive tests to provide a suitable methodology for a multi-scale assessment of the state of preservation, material and construction components of monuments. This paper presents the results of the application of GPR, infrared thermography (IRT) and ultrasonic tests to the 13th century rose window of Troia Cathedral (Apulia, Italy), affected by widespread decay and instability problems caused by the 1731 earthquake and reactivated by recent seismic activity. This integrated approach provided a wide amount of complementary information at different scales, ranging from the sub-centimetre size of the metallic joints between the various architectural elements, narrow fractures and thin mortar fillings, up to the sub-metre scale of the internal masonry structure of the circular ashlar curb linking the rose window to the façade, which was essential to understand the original building technique and to design an effective restoration strategy.

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