Island wakes
| Project acronym: | |
| Name of Group Leader: | R.Caldeira, Universidade da Madeira Campus Universitário da Penteada, Portugal, rui.caldeira@uma.pt |
| User-Project Title: | Island wakes |
| Facility: | Coriolis platform |
| Proceedings TA Project: | Vortex assymetry in island wakes |
| Data Management Report: | Data Management Reports Page You will need to login to view this page |
Summary:
In order to expand our understanding of the Geophysical Fluid Dynamic aspects of island wakes, members of this project, in collaboration with international colleagues from France , Spain, Germany and the UK, were awarded financial support to participated in an european integrated infrastructure initiative: HYDRALAB III, in order to study a ’continuum of wake regimes’ in a laboratory setting. The experiments will take place during November 2008 in the rotating tank for geophysical studies, located in Grenoble, France.
The ’Coriolis rotating platform’ due to its large size, provide access to a range of Ro and Re numbers, for density stratified flows, with no equivalent world wide. In other words, dynamical regimes with low viscosity and high Coriolis effects can be reached, while the centrifugal force remains negligible. Such regimes are directly relevant for the study of oceanic mesoscale processes (1-100 km horizontal scale). The high Re, high Ro island wake experiments will also include studies around a Madeira Island-like obstacle. Results will serve as benchmarks for numerical experiments as well as reference to interpret observations. Click here for further information about this project on the CNRS website.
| Publication References |
| Experiments on instability of columnar vortex pairs in rotating fluid, Geophys. Astrophys. Fluid Dyn. 96,31. Afanasyev, D. Ya., 2002. |
| Sea-surface signatures of the island mass effect phenomena around Madeira Island, Northeast Atlantic, Remote Sensing of the Environment, 80:336-360. Caldeira, R.M.A., S. Groom, P. Miller, and N. Nezlin, 2002. |
| Island wakes in the Southern California Bight, J. Geophys. Res., 110, C11012, doi:10.1029/2004JC002675. Caldeira, R. M. A., P. Marchesiello, N. P. Nezlin, P. M. DiGiacomo, and J. C. McWilliams. 2005. |
| Numerical studies of small island wakes, Geophysics Astrophysics and Fluid Dynamics 83: 195-231. Dietrich, D. E., M. J. Bowman, C. A. Lin, and A. Mestas-Nunez. 1996. |
| Island wakes in deep water, J. Phys. Oceanogr. 37 (4), 962-981. Dong, C.M., J.C. McWilliams, and A.F. Shchepetkin. 2007. |
| Orographically generated nonlinear waves in rotating and non-rotating two-layer flow. Proc. R. Soc. A. (doi:10.1098/rspa.2005.1550). Johnson, E. R., J. G. Esler, O. J. Rump, J. Sommeria, and G. G. Vilenski, 2006. |
| How islands stir and fertilize the upper ocean, Geophys. Res. Letters 31(16), L16303. Hasegawa, D., H. Yamazaki, R.G. Lueck, L. Seuront, 2004. |
| The flow around the tropical island of Aldabra, Deep Sea Res. 43(4):555–78. Heywood K.J., D.P. Stevens, G.R. Bigg, 1996. |
| Cyclone-anticyclone asymmetry of large-scale wakes in the laboratory, Physics of Fluids, 18, 036603. Perret, G., A. Stegner, M. Farge and T. Pichon, 2006. |
| Elliptical-inertial instability of rotating Karman vortex streets, Physics of Fluids, 17, 066602. Stegner, A., T. Pichon and M. Beunier, 2005. |
| Stabilisation et destabilization par la rotation d’un sillage turbulent, C. R. Acad. Sci. III 323, 391. Tarbouriech, L. and D. Renouard, 1996. |
| Island wakes in deep and shallow water, Journal of Geophysical Research, 93: 5153-5154. Tomczak, M, 1988. |
| Three-dimensional island wakes in the field, laboratory experiments and numerical models. Continental Shelf Research, 16: 1437-1452. Wolanski, E., T. Asaeda, A. Tanaka, and E. Deleersnijder, 1996. |