this is the BEST place to go for REAL SCIENCE....remember these people? they make all the topographical maps too: United States Geological Survey......Scientists (people that bush* HATES...bush* tried to demolish this agency, so did reaguns)....
http://www.usgs.gov/go to left sidebar under "spotlight"
"There have been numerous aftershocks detected following the recent magnitude 9 megathrust earthquake. In the first two days following the quake, 40 aftershocks with magnitude greater than five have been detected. The largest occurred about three hours after the main shock and registered a magnitude of 7.5. There have been no reports of tsunamis being generated from the aftershocks. We know from past experience that the number of aftershocks will decrease with time. However, the number of aftershocks can be quite variable.
There might be short episodes of higher activity as well as lulls in activity, but the overall trend will be for fewer aftershocks as time goes by. Seismologists are not able to predict the timing and sizes of individual aftershocks."
to CLICK these map, go through the usgs.gov web site
World Map
USA Map - recent earthquakes in USA
http://earthquake.usgs.gov/eqinthenews/2004/usslav/here's NOAA's tsunami NOTICE for the BIG ONE 9.0
http://www.prh.noaa.gov/ptwc/wmsg