Topic
Geohazards
2 questions tagged Geohazards — spanning every one of the seven Ws.
why
Why do sinkholes sometimes appear suddenly?
Sinkholes can appear suddenly when underground cavities lose support and the roof collapses. Rapid water drainage or pumping can trigger the collapse.
Earth ScienceGeohazards
why
Why do earthquakes sometimes trigger landslides far from the epicentre?
Strong shaking can loosen unstable slopes, especially where rocks are already fractured or waterlogged. The earthquake acts like a sudden push that overcomes friction holding the slope in place.
Earth ScienceGeohazards