Russia’s magnitude 8.8 earthquake spawned serious tsunami warnings, but waves have been moderate so far. Here’s the geological reason why

An 8.8-magnitude earthquake struck off Russia’s eastern coast on late Wednesday morning, local time. The quake triggered tsunami waves across the Pacific that hit Russia, Japan, Canada and parts of the US coast.

One of the strongest earthquakes ever recorded hit Russia’s Far East, flooding a fishing port with waves from a tsunami, cutting power to a few areas and sending some panicked residents to flee buildi