Journal
GEOMORPHOLOGY
Volume 138, Issue 1, Pages 89-99Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.geomorph.2011.08.027
Keywords
Earthquake; Tsunami; Coseismic movements; Coastal plain; Apulia; Italy
Funding
- dell'Istituto Nazionale di Geofisica e Vulcanologia - Dipartimento Protezione Civile [Si 2007/09]
- Bari University
- Quaternary Land-Ocean Interactions: Driving Mechanisms and Coastal Responses [495]
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Morphological analysis of the Fortore River coastal plain and the Lesina Lake coastal barrier integrated with radiocarbon age data indicates that the evolution of the coastal landscape has been strongly affected by a number of strong earthquakes and related tsunamis which occurred during the last 3000 years. The first seismic event struck this coastal area in the V century BC. It produced strong erosion of the Fortore River coastal plain and significant emersion of Punta delle Pietre Nere, as well as the large tsunami responsible for the development of the Sant'Andrea washover fan. The second event occurred in 493 AD; it induced severe erosion of the Fortore River coastal plain and triggered the large tsunami that hit the Lesina Lake coastal barrier, producing the Foce Cauto washover fan. Then later in 1627, an earthquake was responsible for the further coseismic uplift of Punta delle Pietre Nere, the subsidence of Lesina village area and the development of a tsunami which produced two washover fans. Morphological analysis points out that seismic events strong enough to control the morphological evolution of local coastal landscapes show a statistical return period of about 1000 years. These major events produced important coseismic vertical movements and large tsunamis. However, the correct identification of the tectonic structure responsible for the generation of these strong earthquakes is still an unsolved problem. (C) 2011 Elsevier B.V. All rights reserved.
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