My grandfather Edward Derbyshire, who has died aged 91, was an influential geoscientist. His research encompassed everything from landslides and glaciers to desertification and climate change.
For much of his career he was based at what is now Keele University, where he began as a geography lecturer and rose to be professor of geomorphology, before leaving to become head of the geography department at the University of Leicester until his retirement in 1990.
