This book is an outgrowth of the NSF-CBMS conference Nonlinear Waves £3
Weak Turbulence held at Case Western Reserve University in May 1992. The
principal speaker at the conference was Professor V. E. Zakharov who
delivered a series of ten lectures outlining the historical and ongoing
developments in the field. Some twenty other researchers also made
presentations and it is their work which makes up the bulk of this text.
Professor Zakharov's opening chapter serves as a general introduction to
the other papers, which for the most part are concerned with the
application of the theory in various fields. While the word "turbulence"
is most often associated with f: l. uid dynamics it is in fact a
dominant feature of most systems having a large or infinite number of
degrees of freedom. For our purposes we might define turbulence as the
chaotic behavior of systems having a large number of degrees of freedom
and which are far from thermodynamic equilibrium. Work in field can be
broadly divided into two areas: - The theory of the transition from
smooth laminar motions to the disordered motions characteristic of
turbulence. - Statistical studies of fully developed turbulent systems.
In hydrodynamics, work on the transition question dates back to the end
of the last century with pioneering contributions by Osborne Reynolds
and Lord Rayleigh.