Journal of Seismology

, Volume 11, Issue 4, pp 371–380 | Cite as

The source of the 1722 Algarve earthquake: evidence from MCS and Tsunami data

  • M. A. Baptista
  • J. M. Miranda
  • Fernando C. Lopes
  • Joaquim F. Luis
Original Article

Abstract

The 27 December 1722 Algarve earthquake destroyed a large area in southern Portugal generating a local tsunami that inundated the shallow areas of Tavira. It is unclear whether its source was located onshore or offshore and, in any case, what was the tectonic source responsible for the event. We analyze available historical information concerning macroseismicity and the tsunami to discuss the most probable location of the source. We also review available seismotectonic knowledge of the offshore region close to the probable epicenter, selecting a set of four candidate sources. We simulate tsunamis produced by these candidate sources assuming that the sea bottom displacement is caused by a compressive dislocation over a rectangular fault, as given by the half-space homogeneous elastic approach, and we use numerical modeling to study wave propagation and run-up. We conclude that the 27 December 1722 Tavira earthquake and tsunami was probably generated offshore, close to 37°01′N, 7°49′W.

Keywords

Tsunamis Historical seismicity Modelling 

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References

  1. Baptista MA, Miranda PMA, Miranda JM, Victor LM (1998a) Constrains on the source of the 1755 Lisbon tsunami inferred from numerical modelling of historical data. J Geodyn 25:159–174CrossRefGoogle Scholar
  2. Baptista MA, Heitor S, Miranda JM, Miranda P, Mendes Victor L (1998b) The 1755 Lisbon tsunami: evaluation of the tsunami parameters. J Geodyn 25(2):143–157CrossRefGoogle Scholar
  3. Baptista MA, Lemos C, Miranda JM (1999) The tsunami of 1722.12.27, Algarve, Portugal, IUGG99 Abstracts, 133Google Scholar
  4. Baptista MA, Miranda JM, Chiericci F, Zitellini N (2003). New study of the 1755 earthquake source based on multi-channel seismic survey data and tsunami modeling. Nat Hazards Earth Syst Sci 3:333–340CrossRefGoogle Scholar
  5. Baptista MA, Miranda JM, Luis JF (2006). In search of the 31st March 1761 earthquake and tsunami source. Bull Seismol Soc Am 96(2):713–721CrossRefGoogle Scholar
  6. Belém Fr J de (1750) Chronica Serafica da Santa Provincia dos Algarves, da Regular Observancia do Nosso Senhor Padre S. Francisco, Em que se trata de sua Origem, Progressos e Fundações de seus Conventos, Parte Primeira. Lisboa (in Portuguese)Google Scholar
  7. Borges JF, Augusto JSF, Bezzeghoud M, Teves-Costa P (2001) Seismotectonics of Portugal and its adjacent Atlantic area. Tectonophysics 337:373–387CrossRefGoogle Scholar
  8. Brito Fr B (1597) Monarquia Lusytana, tomo I, Lisboa, Impressora Craesbeeckiana, pp 417 (in Portuguese)Google Scholar
  9. Campos ML (1992) El Riesgo de tsunamis en España, Analysis y Valoracion Geografica, pp 204. Monografia do Instituto Geográfico Nacional, Madrid–Espanha (in Spanish)Google Scholar
  10. Freund LB, Barnett DM (1976) A two-dimensional analysis of surface deformation due to dip-slip faulting. Bull Seismol Soc Am 66:667–675Google Scholar
  11. Galbis-Rodriguez (1932) Catalogo Sismico de la zona compreendida entre los meridianos 5 e 20W de Greenwich e los paralelos 45 y 25N. Imprenta de Romano Velasco. Madrid–España (in Spanish)Google Scholar
  12. Gazeta de Lisboa (1723) 14 de Janeiro de 1723 (in Portuguese)Google Scholar
  13. Gjevic B, Pedersen G, Dybesland E, Harbitz CB, Miranda PMA, Baptista MA, Mendes-Victor L, Heinrich Ph, Roche R, Guesima M (1997) Modeling tsunamis from earthquake sources near Gorringe Bank southwest of Portugal. J Geophys Res 102(C13):27931–27949CrossRefGoogle Scholar
  14. GPSN (1991) Gabinete para a protecção e segurança nuclear. Dados para a revisão do catálogo sísmico histórico relativo ao período de 1038 até 1531. Lisboa, Portugal (in Portuguese)Google Scholar
  15. Gràcia E, Dañobeitia J, Vergés J, Bartolomé R, Córdoba D (2003) Crustal architecture and tectonic evolution of the Gulf of Cadiz (SW Iberian margin) at the convergence of the Eurasian and African plates. Tectonics 22(4):1033CrossRefGoogle Scholar
  16. Gutscher M-A, Baptista MA, Miranda JM (2006) The Gibraltar Arc seismogenic zone (part 2): constraints on a shallow east dipping fault plane source for the 1755 Lisbon earthquake provided by tsunami modelling and seismic intensity. Tectonophysics 426:153–166CrossRefGoogle Scholar
  17. Lopes FC (2002) Análise tectono-sedimentar do Cenozóico da Margem Algarvia. PhD thesis. Universidade de Coimbra, p 593 (in Portuguese)Google Scholar
  18. Lopes FC, Cunha PP (2007) Tectono-sedimentary phases of the latest Cretaceous and Cainozoic compressive evolution of the Algarve margin (southern Portugal) IAS Special Publication (in press)Google Scholar
  19. Lopes FC, Cunha PP, Le Gall B (2006) Cenozoic seismic stratigraphy and tectonic evolution of the Algarve margin (offshore Portugal, southwestern Iberian Peninsula). Mar Geol 231:1–36CrossRefGoogle Scholar
  20. Luis JF (2007) Mirone: a multi-purpose tool for exploring grid data. Computers & Geosciences 33:31–41CrossRefGoogle Scholar
  21. Luque L, Lario J, Zazo C, Goy JL, Dabrio CJ, Silva PG (2001) Tsunami deposits as paleoseismic indicators: examples from the Spanish coast. Acta Geol Hisp 36(3–4):197–211Google Scholar
  22. Mader C (1998) Numerical modelling of water waves. Los Alamos Series in Basic and Applied Sciences, p 206Google Scholar
  23. Mader CL (2004) Numerical modeling of water waves. CRC Press, Boca Raton, FL, USA, pp 1–274Google Scholar
  24. Mansinha L, Smylie DE (1971) The displacement field of inclined faults. Bull Seismol Soc Am 61:1433–1440Google Scholar
  25. Mendes-Victor LA, Martins I (2001) Contribution to the study of seismicity in the west Margin of Iberia. Univ Lisboa, IGIDL Pub 25, ISSN 0870–2748Google Scholar
  26. Mendonça JM (1758). História Universal dos Terramotos que tem havido no mundo desde que ha noticia, desde a sua criação até ao século presente. Arq Nac da Torre de Tombo, Lisboa–Portugal (in Portuguese)Google Scholar
  27. Mezcua J (1982) Catalogo general de isossistas de la Peninsula Ibérica. Publ. de lo Instituto Geografico Nacional. Madrid, EspañaGoogle Scholar
  28. Moreira VS (1982) Sismotectónica de Portugal Continental e Região Atlântica Adjacente. INMG, Lisboa (in Portuguese)Google Scholar
  29. Moreira VS (1991) Historical seismicity and seismotectonics of the area situated between the Iberian Peninsula, Marrocco, Selvagens and Azores Islands. In: Seismicity, Seismotectonic and seismic risk of the Ibero–Magrebian Region. IGN 8:213–225Google Scholar
  30. Moreira VS, Marques JS, Cruz JF, Nunes, JC (1993) Review of the historical seismicity in the Gulf of Cadiz area before the 1 November 1755 earthquake. An intermediate Report. RHISE (1989–1993), EC project “Review of Historical Seismicity in Europe.” http://emidius.mi.ingv.it/RHISE/home.html
  31. Rabinovich AB, Miranda PMA, Baptista MA (1998) Analysis of the 1969 and 1975 tsunamis at the Atlantic Coast of Portugal and Spain. Oceanology 38(4):463–469Google Scholar
  32. Solares JMM, Mescua J (2002) Catálogo Sísmico de la Península Ibérica (880 ac–1900) Monografía Núm. 18 (in Spanish)Google Scholar
  33. Tel E, Gonzalez MJ, Ruiz C, Gracia MJ (2004) Arqueologia de datos de nivel del mar: tsunamis, secas y dema´s fenómenos. Sea level data archeology: Tsunamis and seiches and other phenomena.4a Assembeia Luso Espanhola de Geodesia e Geofisica. Figueira da Foz, PortugalGoogle Scholar
  34. Tinti S, Armigliato A, Bortolucci E (2001) Contribution of tsunami data analysis to constrain the seismic source: the case of the 1693 eastern Sicily earthquake. J Seismol 51(1):41–61CrossRefGoogle Scholar
  35. Wagner MN (1993) As fontes para o estudo da sismicidade histórica do Algarve na 1a metade do século XVIII: a investigação no Arquivo Nacional da Torre do Tombo, Lisboa. EC project “Review of Historical Seismicity in Europe” (RHISE) 1989–1993 (in Portuguese)Google Scholar
  36. Wells DL, Coppersmith KJ (1994) New empirical relationships among magnitude, rupture length, rupture width, rupture area, and surface displacement. Bull Seism Soc Am 84(4):974–1002Google Scholar
  37. Wessel P, Smith WHF (1991) Free software helps map and display data, EOS. Trans Am Geophys Un 72(441):445–446Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • M. A. Baptista
    • 1
  • J. M. Miranda
    • 2
  • Fernando C. Lopes
    • 3
  • Joaquim F. Luis
    • 4
  1. 1.Instituto Superior de Engenharia de Lisboa, CGUL, IDLLisbonPortugal
  2. 2.University of Lisbon, CGUL, IDLLisbonPortugal
  3. 3.Departamento de Ciências da Terra, CGUCUniversity of CoimbraCoimbraPortugal
  4. 4.University of Algarve, CIMAFaroPortugal

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