The contribution of anthropogenic action to exposure to natural hazards in the Azores archipelago

Authors

DOI:

https://doi.org/10.14195/1647-7723_32-extra1_1

Keywords:

Natural hazards, risks, anthropogenic action

Abstract

The complex geotectonic setting of the Azores archipelago means that the islands are highly exposed to various natural hazards (e.g. earthquakes, slope movements, volcanoes, overtopping waves, and coastal and river flooding), in addition to climatic factors. Moreover, the disjointed relationship between human activity in the territory and the functioning of the natural phenomena that occur in it leads to increased vulnerability, through the expansion of the population and activities into areas that have always been exposed to natural hazards (e.g. floodplains, proximity to slopes).
This article illustrates some of the situations that the Regional Civil Engineering Laboratory of the Azores (LREC) has encountered over the years, in which man-made intervention was clearly evident in triggering situations that put people and property at risk. Of all the situations analysed, the most recurrent are undoubtedly those related to hydro-geomorphological instability processes.

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References

Antonello, G. Casagli, N. Farina, P. Leva, D. Nico, G. Sieber, A.J. e Tarchi, D. (2004). Ground-based SAR Interferometry for monitoring mass movements. In: Journal of the international consortium on landslides. Landslides, Germany: Springer-Verlag Berlin Heidelberg, Vol.1, 21-28.

Amaral, P. (2005). Monitorização de vertentes instáveis no concelho da Povoação, ilha de S. Miguel (Açores): Ensaios com base na utilização de uma estação total (Tese de Mestrado em Vulcanologia e Riscos Geológicos). Universidade dos Açores, 151 p.

Frutuoso, G. [1522–91] (1981). Livro Quarto das Saudades da Terra. In: Frutuoso, G. (ed.) Saudades da Terra, 2ª edn. Instituto Cultural de Ponta Delgada, Ponta Delgada, II, 285–327.

Gaspar, J. L. Wallenstein, N. Coutinho, R. Ferreira, T. Queiroz, G. Pacheco, J. Guest, J. Tryggvason, E. e Malheiro, A. (1997). Considerações sobre a ocorrência dos movimentos de massa registados na madrugada de 31 de Outubro de 1997 na ilha de S. Miguel, Açores. Relatório técnico-Científico 17/DGUA/97, Centro de Vulcanologia, 28 p.

Marques, R. Zêzere, J.L. Trigo, R. Gaspar, J.L. e Trigo, I. (2008). Rainfall patterns and critical values associated with landslides in Povoação County (São Miguel Island, Azores): relationships with the North Atlantic Oscillation. Hydrological Processes, 22, 478–494.

Marques, F., Amaral, P., Malheiro, A., Moniz, L. e Câmara, A. (2016). Sistema da monitorização multitécnica a implementar no movimento de vertente que afeta a população da Fajãzinha (ilha das Flores - Açores).15º Congresso Nacional de Geotecnia.

Popescu, M. E. (1996).“From landslide causes to landslide remediation” in SENNESET, K. (Ed.) Landslides. Proceedings of the Seventh International Symposium on Landslides. Trondheim. Vol. 1. Balkema, Rotterdam. 75-96.

Puglisi, G. Bonaccorso, A. e Mattia, M. (2004). Volcanic Risk reduction at Sicilian Volcanoes (South Italy) by using geodetic monitoring systems. International symposium “Reducing Volcanic Risk”.Tenerife., Abstracts. p 69.

Silveira, D. Gaspar, J.L. Ferreira, T. e Queiroz, G. (2003). Reassessment of the historical seismic activity with major impact on S. Miguel Island (Azores). Natural Hazards and Earth System Sciences, 3, 1–8.

Valadão, P. Gaspar. J.L, Queiroz, G. e Ferreira, T. (2002). Landslides density map of S. Miguel Island (Azores archipelago). Natural Hazards, 2: 51–56.

Zêzere, J. L. (2000). A Classificação dos Movimentos de Vertente: Tipologia, Actividade e Morfologia, Apontamentos de Geografia – série Investigação, nº 6, Centro de Estudos Geográficos, Lisboa.

Zêzere, J. L., Trigo, R.M. e Trigo, I.F. (2005) - Shallow and deep landslides induced by rainfall in the Lisbon region (Portugal): assessment of relationships with the North Atlantic oscillation. Natural Hazards and Earth System Sciences, 5: 331–344.

Published

2025-12-17