The propagation of an error in Long and Sharp's (1964) data on barchan dune movement
A misprint in a classic study of desert dunes (Long and Sharp, Geological Society of America Bulletin, 1964, Vol. 75, pp. 149-156) is reported. Its influences on subsequent literature are examined. The true data of dune migration speed collected
by Long and Sharp are found to show better correlation with dune height than seen in 2 recent textbooks and a paper by the AA.
. Cryoplanation also invokes a process suite, but one that also embraces nivation. Research in the last 2 or 3 decades has begun to provide a much sharper definition of nivation, but the available information is still inadequate for a central mechanism