The Transoceanic 1755 Lisbon Tsunami in Martinique
Pure Appl. Geophys. 168 (2011), 1015–1031 Ó 2010 Springer Basel AG DOI 10.1007/s00024-010-0216-8 Pure and Applied Geophysics The Transoceanic 1755 Lisbon Tsunami in Martinique 1,2 1 3 2,3 4 4 J. ROGER, M. A. BAPTISTA, A. SAHAL, F. ACCARY, S. ALLGEYER, and H. HE´ BERT Abstract—On 1 November 1755, a major earthquake of esti- 1. Introduction mated Mw=8.5/9.0 destroyed Lisbon (Portugal) and was felt in the whole of western Europe. It generated a huge transoceanic tsunami that ravaged the coasts of Morocco, Portugal and Spain. Local Martinique Island is part of a subduction volcanic extreme run-up heights were reported in some places such as Cape arc of 850 km length, resulting from the convergence St Vincent (Portugal). Great waves were reported in the Madeira of the Atlantic Plate under the Caribbean Plate at an Islands, the Azores and as far as the Antilles (Caribbean Islands). An accurate search for historical data allowed us to find new average rate of 2 cm/year (STEIN et al., 1982) (Fig. 1). (unpublished) information concerning the tsunami arrival and its This subduction is the cause of shallow earthquakes, consequences in several islands of the Lesser Antilles Arc. In some some of them with magnitude greater than 7, as was places, especially Martinique and the Guadeloupe islands, 3 m wave heights, inundation of low lands, and destruction of buildings the case of the 5 April 1690, 8 February 1843 and boats were reported (in some specific locations probably more (FEUILLET et al., 2002) the 18 November 1867 Virgin enclined to wave amplification).
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