Keene Valley Landslide

Laura Sherrod - 2011

Resistivity and GPR surveys were performed in numerous profiles over the landslide feature.  2300m of resistivity profiles were obtained, with accompanying GPR profiles over much of that area and along some roadways.  Bedrock, the slip face of the slide, and subsurface boulder zones in the glacial deposits on the landslide were identified through the use of these geophysical methods.
	Downhill resistivity and GPR profiles were combined to show subsurface features such as the slip face of the landslide (above).  Resistivity surveys at the toe of the slope (left) show subsurface electrical contrasts that correspond to the lithology identified in the well log at this location.

Andrew Kozlowski (left) and Brian Bird (right) measure the displacement based on tree root separation.	The scarp face is visible just 60m from surface exposures of bedrock	Jarred Swiontek pulls the GPR antenna adjacent to a scarp face within the landslide block.
The force of the movement of 82 acres of earth is enough to split trees unfortunate enough to be located on a fissure.	Kenneth Schlosser takes notes as the resistivity survey is performed at the base of the slide.	Dr. Sherrod and Jarred Swiontek lay out the resistivity line on the active landslide.
Late night data processing after a full day of field work - Jarred Swiontek (left) and Kenneth Schlosser (right)	Jarred Swiontek (left) and Kenneth Schlosser (right) at the scarp at the head of the slide.	KU research group at the toe of the slide (note the trees leaning in the direction of slide movement).