GPR survey to confirm the location of ancient structures under the Valencian Cathedral (Spain) |
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| Authors: | Vega Prez Gracia Jos Antonio Canas Lluis G Pujades Jaume Claps Oriol Caselles Francesc García Raul Osorio |
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| Institution: | Vega Pérez Gracia, José Antonio Canas, Lluis G. Pujades, Jaume Clapés, Oriol Caselles, Francesc García,Raul Osorio |
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| Abstract: | This paper describes the ground-penetrating radar (GPR) survey performed inside the Cathedral of Valencia, Spain. It is part of historical studies performed in the Cathedral in order to add information to old maps and documents in the Cathedral Archives and also to analyze the extent and importance of potentially destructive moisture areas that were appearing on the floor. The construction of the Cathedral of Valencia occurred in three stages, all of which are well-documented in the Cathedral Archives with detailed drawings, maps, and charts. The radar data were successful in locating crypts, ossuaries, sepulchers, and graves, and the location of ancient walls that existed before the final Cathedral expansion. Three cultural layers corresponding to the three periods of construction were also identified corresponding to the Roman, Arabian and Middle Age Epochs. Measurements of relative sub-floor moisture were obtained by comparing dielectric permittivity changes and radar velocity differences between materials in humid and non-humid areas. |
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| Keywords: | Ground-penetrating radar (GPR) Archaeology Restoration Humidity damage Historical heritage Archaeological prospecting |
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