Because of the linear and often long nature of pipeline systems, they cross varied terrain and geologic conditions susceptible to ground movement hazards, such as landslides and subsidence. Landslide and subsidence hazards can pose significant risks to pipelines, to public health and safety, and to the environment. Over time, a large number of releases/ruptures, or pipe damage can result from the effects of landslide or subsidence movement, if the effects are left unaddressed. The timely and systematic identification, mapping, characterization and threat classification of potential ground movement hazards are important and allow pipeline owners/operators to understand the nature, spatial...