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Offshore 1755 CE Lisbon Tsunami deposit in the southern portuguese continental shelf
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Resumo(s)
The importance of tsunami hazard assessment is only possible if a complete dataset of events is
available, allowing the determination of the recurrence intervals of the tsunamis adapted to local
and regional conditions. One possible way to know these intervals is to study the offshore
sedimentary record, looking for sediment remobilised and transported by the incoming tsunami
waves and generated backwash currents. Even if these deposits are not of easy access (and not so
well studied), the tsunami depositional signature has potential to be better preserved than those
located onshore.