This is the thing - having experienced a few earthquakes in Turkey, I know that you should if possible get downstairs, get outside and get somewhere open. But if a tsunami is coming I want to be as upstairs as possible, not downstairs? It's a frightening combination - and if you haven't experienced an earthquake let me tell you that even the smaller ones are horrible - so a combination of two massive major natural disasters in succession is truly terrifying.
Upstairs or downstairs isn't the only conflict of this natural combination either - as we see, the flexible timber based buildings that can seem quite primitive but cope with earthquakes so well are nothing more than matchsticks when the tsunami hits.