Mangiarotti Sylvain, Drapeau Laurent, Letellier C. (2014). Two chaotic global models for cereal crops cycles observed from satellite in northern Morocco. Chaos, 24 (2), art. 023130. ISSN 1054-1500.
Titre du document
Two chaotic global models for cereal crops cycles observed from satellite in northern Morocco
Mangiarotti Sylvain, Drapeau Laurent, Letellier C.
Source
Chaos, 2014,
24 (2), art. 023130 ISSN 1054-1500
The dynamics underlying cereal crops in the northern region of Morocco is investigated using a global modelling technique applied to a vegetation index time series derived from satellite measurements, namely, the normalized difference vegetation index from 1982 to 2008. Two three-dimensional chaotic global models of reduced size (14-term and 15-term models) are obtained. The model validation is performed by comparing their horizons of predictability with those provided in previous studies. The attractors produced by the two global models have a complex foliated structure-evidenced in a Poincare section-rending a topological characterization difficult to perform. Thus, the Kaplan-Yorke dimension is estimated from the synthetic data produced by our global models. Our results suggest that cereal crops in the northern Morocco are governed by a weakly dissipative three-dimensional chaotic dynamics.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
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Télédétection [126]
