This 1997 book comprehensively describes all aspects of gravity flow, a physical process in the environment that is covered by many different disciplines, including meteorology, oceanography, the earth sciences and many industrial processes. No other book covers a similar range of information. This second edition includes much new material, and, like the first edition, the hardback has been very well received. Gravity currents are described with a variety of laboratory experiments, many from the author's own work. Now in paperback, Gravity Currents is a valuable supplementary textbook for undergraduates and a reference work for research workers. The general reader will also find much of interest, since the physics of the flows involved is clearly described, without advanced mathematics, by numerous photographs and illustrations.