Wikipedia is also maintaining coverage in a richly linked, well-organized web page with ongoing updates. Link. And Wikipedia Commons offers related media (photos, data animations, and the like): Link (Thanks, Nick Douglas)
Loic Le Meur tells BoingBoing, "On Philsland, a French blogger writes of having been alerted by e-mail three hours before the tsunamis hit the coasts. An earthquake alert was issued by the USGS center three hours before it hit -- we could have saved thousands of people's lives if information had moved faster. This blogger was informed by the alert (Link, in French), and I also talk about it here (Link, in English)."