Hillslope stability and landslide hazard—a case study from Longdendale, north Derbyshire, England

Abstract

In the Upper Etherow valley (Longdendale) detailed studies of the Crowden and Binns landslide areas show that failure occurs on more than one surface in the strata succession. Valley bulging and rock cambering, sandstone aquifers at the base of the valley-side slopes, inclination of the strata, competent beds overlying thicker less resistant strata, ground and surface water flows, and regolith characteristics all contribute to the landslide hazard. A technique of field and air photograph evaluation provides the basis for identifying areas of greatest landslide hazard.