A rate of erosion leading to a loss of 1 millimeter in 1000 years (which is the same as 1 meter in 1 million years). Symbol, B. Named for Sergei von Bubnoff.
Frank Press and Raymond Siever.
Earth. (4th edition)
New York: W.H. Freeman and Co., 1986.
Copyright © 2005 Sizes, Inc. All rights reserved.
Last revised: 11 July 2005.