Science
Earthquake magnitude, explained
Why a 7 is so much worse than a 6, what depth has to do with it, how magnitude differs from shaking — and why the Himalayas will always shake.
RationalTimes●
India sits where one of the planet’s great tectonic collisions is still under way. Every strong earthquake on a live map, how magnitude works, and how India prepares for earthquakes, tsunamis, cyclones and floods.
Why a 7 is so much worse than a 6, what depth has to do with it, how magnitude differs from shaking — and why the Himalayas will always shake.
The deep quake struck about 400 km from Lhasa. Rescue teams and hundreds of police were sent to the epicentre.