Keywords: Lisbon 1755 tsunami travel times.jpg en Travel times of the tsunami from the 1755 Lisbon earthquake calculated with the Tsunami Travel Times TTT software Red contours are for 1-4 hour arrival times yellow 5-6 hrs green 7-14 hrs and blue 15-21 hrs NOTE These maps do not provide information on the height or the strength of the wave NOAA's National Geophysical Data Center NGDC http //www ngdc noaa gov/hazard/icons/1755_1101 jpg NOAA's National Geophysical Data Center NGDC accessed 2009-05-23 PD-USGov-NOAA PD-USGov Lisbon earthquake of 1755 Tsunami maps |