Francesco d’Ovidio

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  • F. d’Ovidio, Emilio Hernández-Garćıa, Emilio Garćıa-Ladona
  • 2008
Transport and mixing properties of surface currents can be detected from altimet-ric data by both Eulerian and Lagrangian diagnostics. In contrast with Eulerian diagnostics, Lagrangian tools like the local Lyapunov exponents have the advantage of exploiting both spatial and temporal variability of the velocity field and are in principle able to unveil(More)
This paper studies the effect of independent additive noise on the synchronous dynamics of large populations of globally coupled maps. Our analysis is complementary to the approach taken by Teramae and Kuramoto [39] who pointed out the anomalous scaling properties preceding the loss of coherence. We focus on the macroscopic dynamics that remains(More)
The Southern Ocean is known as the largest High-Nutrient, Low-Chlorophyll (HNLC) region of the global ocean due to iron limitation. However, a large phytoplankton bloom develops annually downstream of the Kerguelen Islands, which is sustained partly by iron released from the sediments deposited onto the margins. In the framework of 5 the KEOPS-2 project, we(More)
This discussion paper is/has been under review for the journal Biogeosciences (BG). Please refer to the corresponding final paper in BG if available. Abstract Field campaigns are instrumental in providing ground truth for understanding and modelling global ocean biogeochemical budgets. A survey however can only inspect a fraction of the global oceans,(More)
[1] In the last decade, the rapid advancements in computational power have favored the development of high-resolution numerical models capable of directly resolving small-scale structures such as fronts and filaments. Such models have greatly improved our understanding of submesoscale dynamics. At the same time, the small dimensions and short duration of(More)
We characterize the macroscopic attractor of infinite populations of noisy maps subjected to global and strong coupling by using an expansion in order parameters. We show that for any noise amplitude there exists a large region of strong coupling where the macroscopic dynamics exhibits low-dimensional chaos embedded in a hierarchically-organized, folded,(More)
Jacobo Aguirre, ∗ Francesco d’Ovidio, 3, † and Miguel A.F. Sanjuán Nonlinear Dynamics and Chaos Group, Departamento de Matemáticas y F́ısica Aplicadas y Ciencias de la Naturaleza, Universidad Rey Juan Carlos, Tulipán s/n, 28933 Móstoles, Madrid, Spain Quantum Protein Group, Dept. of Physics, Technical University of Denmark, 2800 Lyngby, Denmark Instituto(More)
BACKGROUND In the open ocean, eddies and associated structures (fronts, filaments) have strong influences on the foraging activities of top-predators through the enhancement and the distribution of marine productivity, zooplankton and fish communities. Investigating how central place foragers, such as penguins, find and use these physical structures is(More)
Monitoring marine top predators is fundamental for assessing the health and functioning of open ocean ecosystems. Although recently tracking observations have substantially increased, factors determining the horizontal exploration of the ocean by marine predators are still largely unknown, especially at the scale of behavioral switches (1-100 km,(More)
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