Landslide produced tsunami images
Tsunami predicted from a 500 km3 flank collapse of Cumbre Vieja
volcano, La Palma Canary Islands. Frames show evolution of the landslide
tsunami from 2 minutes (A, upper left) to 9 hours (I, lower right).
Red and blue contours cover elevated and depressed regions of the
ocean respectively and the yellow dots and numbers sample the wave
height (positive above initial sea level; negative below initial
sea level), in meters. Note the strong influence of dispersion in
spreading out an original impulse into a long series of waves of
decreasing wavelength. See also that the peak amplitudes generally
do not coincide with the first wave. Even after crossing the Atlantic,
a lateral collapse of Cumbre Vieja volcano could impose a great
sequence of waves of 10-25 m height on the shores of the Americas.
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image
From Ward, S. N. and S. Day 2001. Cumbre Vieja Volcano -- Potential
Collapse and Tsunami at La Palma, Canary Islands, Geophys. Res.
Lett., 28, 3397-3400
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