Story courtesy of KSL.com
Phoenix Arizona’s PBS affiliate, KAET-TV, Channel 8 had a segment on Earth Fissures on their May 30th episode of "Horizons". They interviewed one resident of the Chandler Heights area that has problems with earth fissures on her property. They also interviewed Todd Shippman with the AZGS in the field. Todd is the project manager for the AZGS’ earth fissure mapping program. The bulk of the program was an interview with Lee Allison, the head of the AZGS and the Arizona State Geologist. He explains the earth fissure mapping program, and the planning scale maps that were just released this week on the AZGS Website. Click through for embedded video of the segment from the Horizon Website. You can also download it as a podcast if you wish. (Photo courtesy of NCS Consultants, LLC.)
The Utah Geologic Survey has released a "Landslide Susceptibility Map of Utah". They apparently relied quite heavily on GIS based thresholding of existing slope angles but only after they had statistically analyzed failure angles for particular geologic units. So it sounds like they throw the known landslides, the geologic map of Utah and a DEM into the GIS a blend it all up. Perhaps a slight oversimplification!