Journal of Marine Science and Engineering Article Tsunami Boulders on the Rocky Coasts of Ibiza and Formentera (Balearic Islands) Francesc Xavier Roig-Munar 1, Antonio Rodríguez-Perea 2, José Angel Martín-Prieto 1,2, Bernadi Gelabert 3,* and Joan Manuel Vilaplana 4 1 QU4TRE Consultoría Ambiental, C/Carritxaret 18-apt. 6, es Migjorn Gran, 07749 Menorca, Spain;
[email protected] (F.X.R.-M.);
[email protected] (J.A.M.-P.) 2 Departamento de Geografía, Universitat de les Illes Balears, Palma de Mallorca, Carretera de Valldemossa km 7,5, 07122 Palma de Mallorca, Spain;
[email protected] 3 Departamento de Biología, Universitat de les Illes Balears, Palma de Mallorca, Carretera de Valldemossa, km 7,5, 07122 Palma de Mallorca, Spain 4 Dpto.de Dinàmica de la Terra i de l’Oceà, Grupo RISKNAT, Geomodels, Universitat de Barcelona, Martí i Franquès, s/n. 08028 Barcelona, Spain;
[email protected] * Correspondence:
[email protected]; Tel.: +34-97117237 Received: 5 June 2019; Accepted: 6 September 2019; Published: 20 September 2019 Abstract: Large boulders have been found in marine cliffs from 7 study sites on Ibiza and Formentera Islands (Balearic Islands, Western Mediterranean). These large boulders of up to 43 t are located on platforms that form the rocky coastline of Ibiza and Formentera, several tens of meters from the edge of the cliff, up to 11 m above sea level and several kilometers away from any inland escarpment. Despite than storm wave height and energy are higher from the northern direction, the largest boulders are located in the southern part of the islands.