Journal cover Journal topic
Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union

Journal metrics

  • IF value: 0.987 IF 0.987
  • IF 5-year<br/> value: 1.358 IF 5-year
  • SNIP value: 0.745 SNIP 0.745
  • IPP value: 1.274 IPP 1.274
  • SJR value: 0.579 SJR 0.579
  • h5-index value: 23 h5-index 23
Nonlin. Processes Geophys., 9, 11-23, 2002
© Author(s) 2002. This work is licensed under the
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Impulse exchange at the surface of the ocean and the fractal dimension of drifter trajectories
D. M. Summers School of Mathematics and Statistics, Napier University, 219 Colinton Road, Edinburgh EH14 1DJ, UK
Abstract. An impulse-based model is developed to represent a coupling between turbulent flow in the atmosphere and turbulent flow in the ocean. In particular, it is argued that the atmosphere flowing horizontally over the ocean surface generates a velocity fluctuation field in the latter's near-surface flow. The mechanism for this can be understood kinematically in terms of an exchange of tangentially-oriented fluid impulse at the air-sea interface. We represent this exchange numerically through the creation of Lagrangian elements of impulse density. An indication of the efficacy of such a model would lie in its ability to predict the observed fractal dimension of lateral trajectories of submerged floats set adrift in the ocean. To this end, we examine the geometry of lateral tracer-paths determined from the present model.

Citation: Summers, D. M.: Impulse exchange at the surface of the ocean and the fractal dimension of drifter trajectories, Nonlin. Processes Geophys., 9, 11-23, doi:10.5194/npg-9-11-2002, 2002.
Publications Copernicus