This paper outlines novel techniques for producing qualitative visualisations of density Ì„uctuations and for obtaining quantitative whole-Â®eld density measurements in two-dimensionalâ€¦ (More)

Ocean waves move due to gravity: the water at crests is heavier than the air surrounding it and so it falls, overshoots its equilibrium position and then at a trough feels an upward restoring force.â€¦ (More)

The excitation of internal gravity waves by fluid intrusions that propagate along the interface between a uniform upper layer and a uniformly stratified lower layer is examined by way of laboratoryâ€¦ (More)

The properties of waves generated by a vertically oscillating sphere in a uniformly stratified fluid are examined both theoretically and experimentally. Existing predictions for the wave amplitudeâ€¦ (More)

Horizontally periodic, vertically localized internal wavepackets evolve nonlinearly due only to interactions between the waves and their wave-induced mean flow. The corresponding weakly nonlinearâ€¦ (More)

Inviscid gravity currents released from a finite-length lock are known to propagate at a constant speed to a predicted finite distance before decelerating. By extension this should occur in aâ€¦ (More)

We examine the response of a twoand three-layer salt-stratified fluid to the collapse of a mixed region intruding along the middle layer. For sufficiently deep middle layers, the intrusion ~anâ€¦ (More)

We investigate the dynamics of a gravity current that propagates along the interface of a two-layer fluid. The results of the well-studied symmetric case are reproduced in which the upper and lowerâ€¦ (More)

â€˜Synthetic schlierenâ€™â€™, which has been used to measure the amplitude of two-dimensional internal wave beams generated from an oscillating cylinder, is adapted to analyze axisymmetric internal wavesâ€¦ (More)

We present experimental results of the generation of internal gravity waves by a turbulent buoyant plume impinging upon the interface between a uniform density layer of fluid and a linearlyâ€¦ (More)