Predicting when an earthquake will occur is known as .
energy is what gathers in a fault through strains.
When owners of established buildings take the initiative to reinforce existing structures so that they can withstand severe earthquakes, they're participating in .
A tsunami in Japan caused a meltdown of reactors at .
Respond to the following based on your reading.

Briefly discuss how strain in a fault can be determined and used to produce an earthquake forecast.