The measurement of the overall physical size of a tsunami. Tsunami magnitude is defined by: m = logi H or H= 2.0™ as revised by Iida, Cox, and Pararas-Carayannis (1967), where H is the maximum run-up height or amplitude on a coasdine near the generating area. Other tsunami magnitude scales have been proposed based, also, on tsunami maximum runup height. N.B. Refer to source to verify equation(s)