There is a nice article on slow moving landslides at Nature.com. They discuss the use of InSAR technology and point out how a number of landslides in the news over the past several years have had at least some movement before a catastrophic event. To me, the interesting part is just how a topic of interest to geoprofessionals is covered by scientists who perhaps aren’t experts in these areas. They also mention some of the more infamous slow moving landslides that are currently being researched. It’s worth a quick scan.
A massive rockslide closed a busy interstate route last week near the border between Tennessee and North Carolina in Pigeon River Gorge. This area has had landslide problems in the past. In 1997 a rockslide in the same area closed the freeway for approximately 3 months. (Photo from Landslides Under a Microscope Blog, original source not cited)
I have yet to see volume estimates, but The Charlotte Observer quoted a highway patrol officer who was at the scene:
He said the roadway is covered by a gigantic mound of debris, from pebbles up to house-sized boulders. The pile is 40 to 50 feet high, Williamson estimated, and hundreds of feet long.
More info and video after the break. […]