Common turbulent signature in sea surface temperature and chlorophyll maps
Article first published online: 1 DEC 2007
Copyright 2007 by the American Geophysical Union.
Geophysical Research Letters
Volume 34, Issue 23, December 2007
How to Cite
2007), Common turbulent signature in sea surface temperature and chlorophyll maps, Geophys. Res. Lett., 34, L23602, doi:10.1029/2007GL030823., , , , , , and (
- Issue published online: 1 DEC 2007
- Article first published online: 1 DEC 2007
- Manuscript Accepted: 26 OCT 2007
- Manuscript Revised: 14 SEP 2007
- Manuscript Received: 21 JUN 2007
- temperature and chlorophyll satellite images;
- microcanonical multifractal formalism;
- currents and energy transfers in the oceans
 Oceans and 2D turbulence present similar characteristics, as for instance the dominant role played by eddies in energy and matter transport. However, providing a complete justification of this analogy is difficult, as it requires knowledge of the ocean's dynamic state at different instants and over large scales. Recently, new techniques coming from the Microcanonical Multifractal Formalism have made it possible to infer the streamlines from the analysis of satellite images of some scalar variables. In this paper, we will show that this information is enough to characterize the scaling properties of the energy cascade, which is manifested as a multifractal signature; further, the multifractal signature is obtained at each location in a local basis. Different scalars obtained from satellite measurements such as Sea Surface Temperature or Surface Chlorophyll Concentration present essentially the same multifractal structure, which is interpreted as a consequence of the pervading character of the turbulent advection at the scales of observation.