Natural Hazards and Earth System Science www.nat-hazards-earth-syst-sci.net 1561-8633 1684-9981 9 6 2009 10.5194/nhess-9-1911-2009 http://www.nat-hazards-earth-syst-sci.net/9/1911/2009/ http://www.nat-hazards-earth-syst-sci.net/9/1911/2009/nhess-9-1911-2009.html http://www.nat-hazards-earth-syst-sci.net/9/1911/2009/nhess-9-1911-2009.pdf 1911 1919 2009-11-17 Feasibility of Tsunami Early Warning Systems for small volcanic islands G. Bellotti bellotti@uniroma3.it M. Di Risio P. De Girolamo DSIC, University of Roma TRE, Rome, Italy DISAT-LIAM, University of L'Aquila, DISAT-LIAM, Monteluco di Roio, Italy This paper investigates the feasibility of Tsunami Early Warning Systems for small volcanic islands focusing on warning of waves generated by landslides at the coast of the island itself. The critical concern is if there is enough time to spread the alarm once the system has recognized that a tsunami has been generated. We use the results of a large scale physical model experiment in order to estimate the time that tsunamis take to travel around the island inundating the coast. We discuss how and where it is convenient to place instruments for the measurement of the waves. Bellotti, G., Cecioni, C., and De Girolamo, P.: Simulation of small-amplitude frequency-dispersive transient waves by means of the mild-slope equation, Coast. Eng., 55(6), 447–458, doi:10.1016/j.coastaleng.2007.12.006, 2008. Beltrami, G. M.: An ANN algorithm for automatic, real-time tsunami detection in deep-sea level measurements, Ocean Eng., 35(5–6), 572–587, doi:10.1016/j.oceaneng.2007.11.009, 2008. Beltrami, G. M. and Di Risio, M.: Algorithms for real-time tsunami detection in wind-wave measurements, Abstract submitted to XXXII International Conference on Coast. Eng.-ICCE, 2009. Casagli, N., Tibaldi, A., Merri, A., Del Ventisette, C., Apuani, T., Guerri, L., Fortuny-Guasch, J., and Tarchi, D.: Deformation of Stromboli Volcano (Italy) during the 2007 eruption revealed by radar interferometry, numerical modelling and structural geological field data, J. Volcanol. Geoth. Res., 182(3–4), 182–200, doi:10.1016/j.jvolgeores.2009.01.002, 2009. Di Risio, M., De Girolamo, P., Bellotti, G., Panizzo, A., Aristodemo, F., Molfetta, M. G., and Petrillo, A. F.: Landslide-generated tsunamis runup at the coast of a conical island: new physicalmodel experiments, J. Geophys. Res., 114, C01009, doi:10.1029/2008JC004858, 2009a. Di Risio, M., Bellotti, G., Panizzo, A., and De Girolamo, P.: Three-dimensional experiments on landslide generated waves at a sloping coast, Coast. Eng., 56(5–6), 659–671 doi:10.1016/j.coastaleng.2009.01.009, 2009b. Lynett, P. and Liu, P. L.-F.: A numerical study of the runup generated by threedimensional landslides, J. Geophys. Res.-Oceans, 110(C3), C03006, doi:10.1029/2004JC002443, 2005. Maramai, A., Graziani, L., and Tinti, S.: Tsunamis in the Aeolian Islands (southern Italy): a review, Mar. Geol., 215(1–2), 11–21, doi:10.1016/j.margeo.2004.03.018, 2005. Tibaldi, A.: Multiple sector collapses at Stromboli volcano, Italy: How they work, B. Volcanol., 63, 112–125, 2001. Tinti, S., Pagnoni, G., Zaniboni, F., and Bortolucci, E.: Tsunami generation in Stromboli island and impact on the south-east Tyrrhenian coasts, Nat. Hazards Earth Syst. Sci., 3, 299–309, 2003. Tinti, S., Manucci, A., Pagnoni, G., Armigliato, A., and Zaniboni, F.: The 30 December 2002 landslide-induced tsunamis in Stromboli: sequence of the events reconstructed from the eyewitness accounts, Nat. Hazards Earth Syst. Sci., 5, 763–775, 2005. Tinti, S., Pagnoni, G., and Zaniboni, F.: The landslides and tsunamis of the 30th of December 2002 in Stromboli analysed through numerical simulations, B. Volcanol., 68(5), 462–479, doi:10.1007/s00445-005-0022-9, 2006. Tinti, S., Zaniboni, F., Pagnoni, G., and Manucci, A.: Stromboli Island (Italy): Scenarios of Tsunamis Generated by Submarine Landslides, Pure Appl. Geophys., 165(11–12), 2143–2167, doi: 10.1007/s00024-008-0420-y, 2008. Watts, P., Grilli, S. T., Kirby, J. T., Fryer, G. J., and Tappin, D. R.: Landslide tsunami case studies using a Boussinesq model and a fully nonlinear tsunami generation model, Nat. Hazards Earth Syst. Sci., 3, 391–402, 2003.