isis
You obviously don't have a clue about the science!
I will say it one more time. You can't detect tsunami with just a seismograph, you need sea floor sensors as well.
It is people like you who do the damage and stop progress. If you are so curious about the subject, why not go and learn a bit about it before passing blame on governments, residents and tourists hit by this disaster.
The UK is no better prepared for a tsunami than any of the counties hit by this disaster so we should not preach to them.