December 26, 1746 Tsunami: Portugal

Berninghausen (1964, ref #41) reports this event quoting Mallet (1852): “[. . . ] the tide was very low (at the time of the shock) and it was observed that the sea, which had been quite calm, rose considerably [. . . ]. The seismic catalog of Martins and Victor (2001) reports 2 earthquakes in 1746, with no specific day and/or month. The shocks are located at −8.5 E, 40.3 N, and −7.9 E, 38.2 N, both with magnitude 3.0. Mendonca (1758) reports only one event for this year, in Lima (Peru). Moreira (1991) reports events in 1746 with no specific date, felt in Assumar, Pombal, Agueda, Espinhel, Alandroal. Some answers from question number ten of the Marques de Pombal Inquiry that are transcribed in Moreira (1991) and Runa and Freire (1991) refer to an earthquake ten years before 1756, but no reference is made to a tsunami, as it would be expected as the above localities are inland, far away from the sea. Perrey (1847), Mallet (1852) and Rodriguez (1932) do not mention this event. (reference #4649)