long, long ones would be, what? 30 seconds or so. tsunami is many minutes, like a half hour, between the wave crests. it's like a fast moving tide, it comes in, water moves up, i don't know if you've seen the pictures of the sumatran tsunami, it's a fast moving tide, moves in, will go away, an hour later another one comes in. it's a fast moving tide. not like the movies, it jumps up ten feet and comes and gets you. >> i see. i see. when we then hear of the aftershocks that have occurred since the initial earthquake and potenti potentially additional aftershocks we can assume will occur, how then will that potentially affect this wave or other waves? >> caller: it won't affect the wave fronts. waves don't really affect each other in the water like that. they can amplify each other but