@article{Johnson_etal_2006_PRS,
  title = {Orographically generated nonlinear waves in rotating and non-rotating two-layer flow},
  author = {E. R. Johnson and J. G. Esler and O. J. Rump and J. Sommeria and G. G. Vilenski},
  pages = {3--20},
  year = 2006,
  journal = {PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES},
  number = 2065,
  volume = 462,
  url = {http://archipelago.uma.pt/pdf_library/Johnson_etal_2006_PRS.pdf},
  abstract = {This paper reports experimental observation of finite amplitude interfacial waves forced by a surface-mounted obstacle towed through a two-layer fluid both when the fluid is otherwise at rest and when the fluid is otherwise rotating as a solid body. The experimental apparatus is sufficiently wide so that sidewall effects are negligible even in near-critical flow when the towing speed is close to he interfacial long-wave speed and the transverse extent of the forced wavefield is large. The observations are modelled by a simple forced Benjamin-Davis-Acrivos equation and comparsion between integrations of both linear and nonlinear problems shows the fundamental nonlinearity of the near-critical flow patterns. In both the experiments and integrations rotation strongly confines the wavefield to extend laterally over distances only of order of the Rossby radius and also introduces finite-amplitude sharply pointed lee waves in supercritical flow.}
}