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Natural Hazards

, Volume 47, Issue 1, pp 55–63 | Cite as

Drought events in Southern Portugal from the 12th to the 19th centuries: integrated research from descriptive sources

  • Afonso Do ÓEmail author
  • Maria J. Roxo
Original Paper

Abstract

Historical research of extreme climate events, such as droughts, that occurred before the quantitative period initiated with the installation of weather station networks, is dependent on the availability of descriptive sources such as newspapers, archives, memories or other written reports. This study is based on a thorough survey and analysis of available sources of information, reporting drought events and impacts occurring in the southern Portuguese region of Algarve since medieval times. Most sources were compiled from published references, coupled with a thorough research of periodic newspapers published during the 19th century, which significantly increased the volume of available information. Results were validated by comparison whenever multiple sources were available, including early instrumental records and a study using a similar methodology for the neighbouring region of Inner Lower Alentejo. This study concludes that frequent drought events occurred in the Algarve during the period covered. The same applies to the Alentejo, but many of the identified periods differed, exposing different climatic genesis of most events between the two neighbouring regions. Comparison with instrumental records show that much of the data collected in 19th century newspapers may refer to dry spells rather than long-term droughts. Finally, the study allows to conclude that descriptive sources have, in general, a large informative potential where no quantitative sources are available, but lack complementary methods both for validating collected data, and for reducing subjective and arbitrary criteria that lead perception-based description of such extreme events.

Keywords

Descriptive sources Historical events Droughts Southern Portugal 

Notes

Acknowledgements

The authors thank J. Haws from the University of Louisville, Kentucky (USA) for revising and A. Khawli for the insight and translation of sources in Arabic, and acknowledge a Ph.D. grant to A.D. from the Portuguese Foundation for Science and Technology (FCT/SFRH/BD/12042/2003).

References

  1. Bark LD (1978) History of American droughts. In: Rosenberg NJ (ed) North American droughts. Westview Press, Boulder, COGoogle Scholar
  2. Barriendos M (2004) Historical droughts in Spain. Houille Blanche – Révue Internationale de l’Eau 5:30–34CrossRefGoogle Scholar
  3. Cunha LV, Ribeiro L, Oliveira RP, Nascimento J (2006) Recursos Hídricos. In: Santos FD, Miranda F (eds) Alterações Climáticas em Portugal: Cenários, Impactos e Medidas de Adaptação (Projecto SIAM II). Gradiva, LisboaGoogle Scholar
  4. Do Ó A (2005) Regional drought analysis and mitigation using SPI. In: Proceedings of the 21st European Regional Conference of the International Commission on Irrigation and Drainage, ICID, Frankfurt/Oder, 19–21 May 2005Google Scholar
  5. Do Ó A, Monteiro JP (2006) Diagnóstico do Risco de Secas no Algarve – uma abordagem geográfica. In: Actas do X Colóquio Ibérico de Geografia, Associação Portuguesa de Geografia, Évora, 21–23 September 2005Google Scholar
  6. Grove AT, Rackam O (2004) The nature of Mediterranean Europe – an ecological history. Yale University Press, New Haven and LondonGoogle Scholar
  7. Ibn Idharî a-M (1995) Al-bayân al-Mughrib fî Akhbâr al-Andalus wal Maghreb. M I Al-kattani, CasablancaGoogle Scholar
  8. Magalhães JR (1987) Alguns aspectos da produção agrícola no Algarve: fins do século XVIII – princípios do século XIX. Revista Portuguesa de História, Faculdade de Letras da Universidade de CoimbraGoogle Scholar
  9. Mendoza B (2006) A study of historical droughts in south eastern Mexico, Velasco. J Clim 19(12):2916–2934CrossRefGoogle Scholar
  10. Monteiro JP, Vieira J, Nunes L, Younes F (2006) Inverse calibration of a regional flow model for the Querença-Silves Aquifer System (Algarve-Portugal). In: Integrated Water Resources Management and Challenges of the Sustainable Development, International Association of Hydrogeologists, Marrakech, 8–10 November 2006Google Scholar
  11. Nunes L, Monteiro JP, Cunha MC, Vieira J, Lucas H, Ribeiro L (2006) The water crisis in southern Portugal: how did we get there and how should we solve it. In: Brebbia CA, Conti ME, Tiezzi E (eds) Sustainable development and ecological hazards. WIT transactions on ecology and environmental management of natural resources, vol 99. WIT Press, Southampton, pp 435–444CrossRefGoogle Scholar
  12. Pfister C (2006) Hydrological winter droughts over the last 450 years in the Upper Rhine basin: a methodological approach. Hydrol Sci J 51(5):966–985CrossRefGoogle Scholar
  13. Roxo MJ, Casimiro PC (1999) A imprensa regional e a pesquisa de fenómenos climáticos extremos durante o século XIX – Baixo Alentejo Interior. In: Actas do VIII Colóquio Ibérico de Geografia, Departamento de Geografia e Planeamento Regional da Faculdade de Ciências Sociais e Humanas da Universidade Nova de Lisboa, Lisboa, 30 September–2 October 1999Google Scholar
  14. Taborda JP, Alcoforado MJ, Garcia JC (2004) O clima do Sul de Portugal no século XVIII – reconstituição a partir de fontes descritivas e instrumentais. Centro de Estudos Geográficos, LisboaGoogle Scholar
  15. Tavares MJ (2004) Os sinais dos tempos: Para o estudo do clima e do litoral português (séculos XII a XVI). In: Tavares AA, Tavares MJ, Cardoso JL (eds) Evolução geohistórica do litoral Português e fenómenos correlativos. Universidade Aberta, LisboaGoogle Scholar
  16. Taylor JG, Stewart TR, Downton MW (1987) Perceptions of drought in the Ogallala aquifer region of the western U.S. Great Plains. In: Wilhite DA, Easterling WE (eds) Planning for drought: toward a reduction of societal vulnerability. Westview Press, Boulder (CO)Google Scholar
  17. Trac NQ (coord.) (1981) Évaluation des ressources en eaux des systèmes aquifères de l’Algarve. Final project report of the United Nations Development Programme, UNO/DGRAH, LisbonGoogle Scholar
  18. Ventura JE (1996) Aspectos da distribuição espacial das chuvas no Sul de Portugal. Centro de Estudos Geográficos na Universidade de Lisboa, LisboaGoogle Scholar
  19. Wilhite DA (2001) Drought as a natural hazard: concepts and definitions. In: Wilhite DA (ed) Drought: a global assessment. Routledge, London and New YorkGoogle Scholar
  20. Zheng JY (2006) Precipitation variability and extreme events in eastern China during the past 1500 years. Terr Atmos Ocean Sci 17(3):579–592Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.e-GEO, FCSH-UNLLisboaPortugal

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