If it is hard to survive in the earthquake, we should try to predict when it will happen. You can try this website provided by United States Geological SurveyIn the latest Indian Ocean earthquake, the magnitude was first reported as 8.1 by the United States Geological Survey, but after further analysis they increased this first to 8.5 and 8.9 and finally 9.0.
Wikipedia published detailed introduction of the earthquake and how to donor to the victims in the earth quake.
Hope I can be helpful, in some extent. There is a word on the bbc news message board that impressed me: "We must send all available aid to Asia". Though nature is more powerful, we can do what we do to help ourselves.
I have two classmates in Indonesia and Thailand. Best wishes to them and hope they are safe.