Terrawatch: storms can cause landslides days later, scientists find

Changes in atmospheric pressure can set soils in motion hours or even days after heavy rainCan a change in the weather trigger a landslide? Sometimes, yes, according to research.Most landslides are set in motion by an earthquake or torrential rain, but some have no obvious trigger. In 2009, scientists were stunned to discover that the stop-start Slumgullion landslide in the Rocky Mountains - which has been inching down the hillside for 700 years - is triggered by changes in atmospheric pressure. Continue reading...