fearfull flyer,
Small earthquakes like the Murcia one happen all the time on the Iberian peninsula and they don't affect airport operations. It would take devastating earthquakes like the japanese one to close an airport, because then you could have significant damage in the airport's infrastructure (terminals, control tower, accesses, cracks on the runway).
An earthquake of the magnitude that happened in Japan is almost impossible around the Mediterranean basin smply because the type of tectonics working on both areas are different (so I read, I'm no expert). I don't understand your question about a tsunami sucking something, tsunamis don't work like that... have you seen images from the japanese one? In any case tsunamis of that magnitude can't occur in the Mediterranean.
It's a pity some people prefer to poke fun at questions from fearful people. You're not helpful. Fighting fear of flying can be a daunting process and it's better to ask as many questions than keeping doubts in, spiraling into uncontrolable fear. As someone once said, there's no stupid questions, only stupid answers.