Abstract
The island of Ischia, Gulf of Naples, Italy, like many other volcanic islands is affected by mass failures, that are mainly related to secondary volcanic processes such as slope steepening and seismic shaking. The block resurgence of its main relief, Mount Epomeo, has been recognised to contribute cyclically to mass instability and cause landslides, that occasionally may reach the sea and start tsunamis. In this work we explore the consequences of the Ischia Debris Avalanche (IDA), a flank collapse that occurred in historical times, and involved the whole Mount Epomeo edifice including its submarine portion, and that may have caused gigantic sea waves affecting all the coasts of Ischia and of the Gulf of Naples. The IDA and the generated tsunami have been taken as the worst-case scenario for the occurrence of a new tsunami in the area. They have been simulated through numerical codes developed and maintained by the University of Bologna. The simulation shows that the IDA-induced tsunami attacks severely all the coasts of the Gulf of Naples with the highest waves obtained for the island of Ischia, the island of Capri and the peninsula of Sorrento. The propagation pattern of the IDA tsunami can be used to get hints on the impact that such an event may have had on early populations habiting Gulf of Naples, but also to get clues on the area that could be most severely hit by a tsunami generated by a smaller-scale landslide that may occur in the same source zone.
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References
Buchner G (1986) Eruzioni vulcaniche e fenomeni vulcano-tettonici di età preistorica e storica nell’isola di Ischia. In: Albore-Livadie C (ed) Tremblements de terre, éruptions volcaniques et vie des hommes dans la Campanie antique. Publication du Centre Jean Bérard, Napoli, pp 1029–1034
Chiocci FL, de Alteriis G (2006) The Ischia debris avalanche: first clear submarine evidence in the Mediterranean of a volcanic island prehistorical collapse. Terra Nova 18:202–209
Chiocci FL, Martorelli E, Sposato A (1998) TIVOLI Research Group, 1998, Prime immagini TOBI dei fondali del Tirreno centro-meridionale (settore orientale). Geologica Romana 34:207–222
de Alteriis G, Violante C (2009) Catastrophic landslides off Ischia volcanic island (Italy) during pre-history. In: Violante C (ed) Geohazard in rocky coastal areas, vol 322. Special publication of the geological society of London, pp 73–104
de Alteriis G, Insinga D, Morabito S, Morra V, Chiocci FL, Terrasi F, Lubritto C, Di Benedetto C, Pazzanese M (2010) Age of submarine debris avalanches and tephrostratigraphy offshore Ischia island, Tyrrhenian sea, Italy. Mar Geol. doi:10.1016/j.margeo.2010.08.004
de Vita S, Sansivero F, Orsi G, Marotta E (2006) Cyclical slope instability and volcanism related to volcano-tectonism in resurgent calderas: the Ischia Island (Italy) case study. Eng Geol 86:148–165
Flouri E, Chrysoulakis N, Mitsoudis DA, Kamarianakis Y, Foteinis S, Okal E, Synolakis C (2009) Tsunami hazard assessment in the eastern Aegean Sea, Geophysical research abstracts, vol. 11, EGU2009-5544, EGU general assembly 2009, Vienna, Austria, 19–24, Apr 2009
Gillot P-Y, Chiesa S, Pasquarè G, Vezzoli L (1982) 33.000 yr K/Ar dating of the volcano-tectonic horst of the isle of Ischia, gulf of Naples. Nature 229:242–245
Lima VV, Miranda JM, Baptista MA, Catalão J, Gonzalez M, Otero L, Olabarrieta M, Álvarez-Gómez JA, Carreño E (2010) Impact of a 1755-like tsunami in Huelva, Spain. Nat Hazard Earth Syst Sci 10:139–148
Liu PLF, Yeh H, Synolakis CE (2008) Benchmark problems. In: Liu PLF, Yeh H, Synolakis CE (eds) Advanced numerical models for simulating tsunami waves and run-up, vol. 10 of “Advances in Coastal and Ocean Engineering”, World Scientific Publishing, Singapore, 223–230
Manzo M, Ricciardi GP, Casu F, Ventura G, Zeni G, Borgstrom S, Berardino P, Del Gaudio C, Lanari R (2006) Surface deformation analysis in the Ischia Island (Italy) based on spaceborne radar interferometry. J Volcanol Geotherm Res 151:399–416
McGuire WJ, Jones AP, Neuberg J (eds) (1996) Volcano instability on the earth and other planets. Special publication of the geological society of London, 110
Orsi G, Gallo G, Zanchi A (1991) Simple shearing block-resurgence in caldera depression. A model from Pantelleria and Ischia. J Volcanol Geotherm Res 47:1–11
Tinti S, Vannini C (1995) Tsunami trapping near circular islands. Pure Appl Geophys 144:595–619
Tinti S, Gavagni I, Piatanesi A (1994) A finite-element numerical approach for modeling tsunamis. Ann Geophys 37:1009–1026
Tinti S, Bortolucci E, Vannini C (1997) A block-based theoretical model suited to gravitational sliding. Nat Hazards 16:1–28
Tinti S, Bortolucci E, Romagnoli C (2000) Computer simulations of tsunamis due to sector collapse at Stromboli, Italy. J Volcanol Geotherm Res 96:103–128
Tinti S, Armigliato A, Pagnoni G, Zaniboni F (2005) Scenarios of giant tsunamis of tectonic origin in the Mediterranean. ISET J Earthq Technol 42:171–188
Tinti S, Zaniboni F, Pagnoni G, Manucci A (2008) Stromboli Island (Italy): scenarios of tsunamis generated by submarine landslides. Pure Appl Geophys 165:2143–2167
Tinti S, Armigliato A, Gallazzi S, Manucci A, Pagnoni G, Tonini R, Zaniboni F (2009a) Scenarios of tsunami impact in the town of Alexandria, Egypt, IASPEI general assembly, Cape Town, South Africa, 10–16 Jan 2009
Tinti S, Pagnoni G, Zaniboni F (2009b) Tsunamis induced by slope failures in the volcanic island of Ischia, Italy: numerical simulations and implication on risk in the Gulf of Naples, 24th international tsunami symposium, Novosibirsk, Russia, 14–17 July 2009
TRANSFER Project (2008a) EU contract no. 037058, First annual activity report, 101 pp. Available at http://www.transferproject.eu/
TRANSFER Project (2008b) EU contract no. 037058, First annual activity report, Annex II: first annual activity reports by partners, 195 pp. Available at http://www.transferproject.eu/
Acknowledgments
The authors are indebted to ISMAR for bathymetric data covering the area of tsunami computation. This study has been partially supported by funds from the European project TRANSFER.
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Tinti, S., Chiocci, F.L., Zaniboni, F. et al. Numerical simulation of the tsunami generated by a past catastrophic landslide on the volcanic island of Ischia, Italy. Mar Geophys Res 32, 287–297 (2011). https://doi.org/10.1007/s11001-010-9109-6
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DOI: https://doi.org/10.1007/s11001-010-9109-6