https://www.youtube.com/watch?v=1SXaMH8gV6I Earth fissures are long, narrow cracks in the ground that form where the ground is sinking. They can erode very quickly, posing a hazard to nearby infrastructure. In Arizona, land subsidence--the sinking of the earth--is caused by groundwater withdrawal, meaning that earth fissures are a man-made--or anthropogenic--hazard. This video that I made as part… Continue reading Understanding Earth Fissures: A Man-Made Geohazard
Disneyland may be one of the happiest places on Earth, but it’s also smack in the middle of California earthquake country. The San Andreas fault runs through nearly the entirety of California and has produced many great earthquakes. The San Andreas fault defines a tectonic boundary between the Pacific Plate and the North American… Continue reading Could an Earthquake Destroy Disneyland?