Historical Sources for Earthquakes before 1900 on the Iberian Peninsula and in the Offshore Region

Information about historical earthquakes in the Iberian Peninsula going back to Antiquity (Roman times) can be found in different types of documents, such as unpublished contemporary manuscripts preserved in archives, general, and regional histories in Spain and Portugal, published documents and reports on the damage of specific earthquakes, and reports in newspapers and magazines. The 1755 Lisbon earthquake marks an important point for the study of historical earthquakes in the peninsula. The compilation and interpretation of historical data presents many problems, one of which is how to express the many uncertainties in the focal parameters of historical earthquakes in earthquake catalogs.