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Abstract

Summary

Batalha Abbey is a 14th century UNESCO world heritage site that shows signs of decay. During the last years, high resolution geophysical methods have been used to contribute to the knowledge of its construction characteristics and to an informed maintenance and rehabilitation project. Here in it is presented a multimethod high-resolution geophysical investigation of its main tower. A 3D resistivity survey was carried out on the surface around the tower to investigate the ground beneath it. A GPR survey was used on the tower walls surface to investigate its interior. Three frequencies, 250MHz, 500MHz and 800MHz, were used. Finally, a seismic tomography study was done around the tower with both geophones and sources on the tower walls to provide a 3D velocity image of the tower interior.

3D resistivity results give a clear image of the walls foundations and of the ground beneath the tower. GPR 250MHz data provide a complete GPR image across the tower, although of low resolution. Higher resolution GPR results provided clearer information on the constructive elements of the tower. Finally, the seismic tomography results gave, for the first time, a complete image of the tower interior and proved it a compact construction with no voids.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.201902371
2019-09-08
2024-04-20

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References

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Multimethod 3D Geophysical Survey of a Monument - The Bell Tower of Batalha Abbey
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201902371
/content/papers/10.3997/2214-4609.201902371
/content/papers/10.3997/2214-4609.201902371
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