Heritage monitoring and surveillance using Sentinel satellite data in the Lower Alentejo (Portugal)

Steffan Davies; Martino Correia; Ricardo  Cabral

doi:10.37558/gec.v17i1.755

Steffan Davies THEIA
Martino Correia THEIA
Ricardo Cabral THEIA

DOI: https://doi.org/10.37558/gec.v17i1.755

Resumo

In this article, the potential of Satellite Remote Sensing (SRS) for large-scale monitoring of archaeological sites is analysed. This analysis focuses on the Portuguese Lower Alentejo region, where multiple sites have been destroyed over the last years, mainly due to intensive agriculture. The development of a surveillance system based on data from the Sentinel 1 and Sentinel 2 satellite constellations, named SENSEOS, had its pilot application in this region during the first half of 2019. In a vast region where authorities lacked the proper resources to timely detect events endangering the integrity of heritage sites, this system tried to overcome these issues. By using Synthetic Aperture Radar (SAR) and optical data, it was possible to detect such events through a technique labelled Normalized Difference Amplitude Index (NDAI). The identification of these changes on the surface, associated with potentially destructive events, contributed to minimize the damage and destruction of archaeological sites.

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Biografias Autor

Steffan Davies, THEIA

Steffan Davies holds a Licentiate degree in Archaeology and a Master’s degree in Archaeology and Territory, with a specialization in Archaeogeography, both by the University of Coimbra (Portugal). He is a researcher in the Centre of Studies in Archaeology, Arts and Heritage Sciences of the University of Coimbra (CEAACP), and is currently working at the Portuguese company THEIA in Research and Development, in fields such as Satellite Remote Sensing, Computer Programming., Virtual Reality and Digital Heritage.

Martino Correia, THEIA

Martino Correia has graduate in “Archaeology and History” by the University of Coimbra (Portugal), with a Master's degree in “Archaeology and Territory” by the same University and a post-graduation in “European Heritage, Digital Media and the Information Society” carried out at the Universities of Coimbra and Salento (Lecce, Italy). He is a researcher in the Centre of Studies in Archaeology, Arts and Heritage Sciences of the University of Coimbra and was an Invited Assistant Professor at the Higher School of Education of Coimbra. He is also co-founder and managing-partner of the company THEIA, which works on the application of digital and technological solution to Archaeology and Cultural Heritage.

Ricardo Cabral, THEIA

Ricardo Cabral holds a Licentiate Degree in Archaeology and History and is currently a PhD Candidate in Archaeology at the University of Coimbra. Between 2010 and 2019 he was an Invited Assistant Professor at the Faculty of Letters of the University of Coimbra. He is currently a researcher at the Centre of Studies in Archaeology, Arts and Heritage Sciences of the University of Coimbra, conducting research in Near Eastern Archaeology, where he coordinates the Kani Shaie Archaeological Project (Iraq) and participates in the Iraq Emergency Heritage Management Training Scheme, a British Museum project. He is also co-founder and managing-partner of the company THEIA, which works on the application of digital and technological solution to Archaeology and Cultural Heritage.

Referências

ADAMS, R. E. W., BROWN, W. E., CULBERT, T. P. (1981). “Radar mapping, archaeology, and ancient Maya land use.”, Science, 213(4515): 1457-1468.

CARLSON, T. N., RIPLEY, D. A. (1997). “On the relation between NDVI, fractional vegetation cover, and leaf area index”, Remote sensing of Environment, 62(3): 241-252.

CHEN, F., YOU, J., TANG, P., ZHOU, W., MASINI, N., LASAPONARA, R. (2018). “Unique performance of spaceborne SAR remote sensing in cultural heritage applications: Overviews and perspectives”, Archaeological Prospection, 25(1): 71–79. https://doi.org/10.1002/arp.1591

CONYERS, L. B. (2006). “Ground-penetrating Radar for Archaeological Mapping”, In: Wiseman J., El-Baz F. (eds) Remote Sensing in Archaeology. Interdisciplinary Contributions to Archaeology. Springer, New York, NY

DIAS, C. (2017). “Villa romana de Pisões é agora a luxuosa casa das ervas daninhas”, Público, 17 July. https://www.publico.pt/2017/07/17/local/noticia/villa-romana-de-pisoes-foi-descoberta-ha-50-anos-e-esta-coberta-de-ervas-daninhas-1779095. [accessed: 25/10/2019].

DUNKER, R., VANCE, S., HOOKS, C., DARMODY, R. (1994). “Use of Cone Penetrometer Data to Evaluate Prime Farmland Rooting Media”, Reclamation and Revegetation, 3: 38-47. http://doi.org/10.21000/JASMR94030038

FILIPPONI, F. (2019). “Sentinel-1 GRD Preprocessing Workflow”, Proceedings, 18(1): 11. https://doi.org/10.3390/ECRS-3-06201

LASAPONARA, R., MASINI, N. (2005). “QuickBird‐based analysis for the spatial characterization of archaeological sites: Case study of the Monte Serico medieval village”, Geophysical Research Letters, 32(12).

LEMOS, N. (2018). “Zona envolvente à villa romana de Pisões terá sido fortemente afetada pela plantação de um olival intensivo”, Diário do Alentejo, 29 January.

LUSA (2019). “Culturas intensivas no Alqueva geram receios que agricultores dizem infundados”, RTPNotícias, 13 July. https://www.rtp.pt/noticias/economia/culturas-intensivas-no-alqueva-geram-receios-que-agricultores-dizem-infundados_n1160161. [accessed: 25/10/2019].

MORGADO, M. (2019). “Olival no Alentejo: a revolução agrária 4.0 à volta do Alqueva”, Sapo, 24 February. https://24.sapo.pt/economia/artigos/olival-no-alentejo-a-reforma-agraria-4-0-a-volta-do-alqueva. [accessed: 25/10/2019].

OBATA, K., MIURA, T., YOSHIOKA, H. (2012). “Comparison of scaling effects in fraction of vegetation cover between algorithms based on linear mixture model using VI”, 2012 IEEE International Geoscience and Remote Sensing Symposium: 1002-1005. https://doi.org/10.1109/IGARSS.2012.6350821

OBATA, K., MIURA, T., YOSHIOKA, H. (2012). “Analysis of the Scaling Effects in the Area-Averaged Fraction of Vegetation Cover Retrieved Using an NDVI-Isoline-Based Linear Mixture Model”, Remote Sens, 4: 2156-2180. https://doi.org/10.3390/rs4072156

OMNIKNOS ARQUEOLOGIA (n.d.). “Execução do Circuito Hidráulico Baleizão - Quintos e respetivos Blocos de Rega - Quinta do Estácio 10”, Field Report. https://biblioteca.edia.pt/BiblioNET/Upload/PDFS/M03406.pdf [accessed: 25/10/2019]

PARCAK, S. H. (2009). Satellite remote sensing for archaeology. London & New York: Routledge.

PATEL, V. M., EASLEY, G. R., HEALY JR, D. M., CHELLAPPA, R. (2010). “Compressed synthetic aperture radar”, IEEE Journal of selected topics in signal processing, 4(2): 244-254. https://doi.org/10.1109/JSTSP.2009.2039181

PEREIRA, C., SOARES, A.M.M., SOARES, R.M. (2013). “Os mausoléus da villa romana de Pisões: a morte no mundo rural romano”, Revista Portuguesa de Arqueologia, 16: 303-321.

SERRA, M. (2008). “Novos dados para o conhecimento da Villa romana de Pisões (Beja)”, Vipasca, 2: 503-507.

TAPETE, D., CIGNA, F., DONOGHUE, D.N. AND PHILIP, G. (2015). “Mapping changes and damages in areas of conflict: from archive C-band SAR data to new HR X-band imagery, towards the Sentinels”, En Proceedings of FRINGE’15: Advances in the Science and Applications of SAR Interferometry and Sentinel-1 InSAR Workshop, Frascati, Italy, 23-27 March 2015, Ouwehand L., Ed., ESA Publication SP-731. https://doi.org/10.5270/Fringe2015.pp149

ZHANG, X., G. YAN, Q. LI, Z‐L. LI, H. WAN, AND Z. GUO (2006). “Evaluating the fraction of vegetation cover based on NDVI spatial scale correction model.”, International Journal of Remote Sensing, 27(24): 5359-5372. https://doi.org/10.1080/01431160600658107