dorsal/arxiv
View SchemaCyclic Fluctuations, Climatic Changes and Role of Noise in Planktonic Foraminifera in the Mediterranean Sea
| Authors | A. Caruso, M. E. Gargano, D. Valenti, A. Fiasconaro, B. Spagnolo |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0509023 |
| URL | https://arxiv.org/abs/q-bio/0509023 |
| Journal | Published in Fluct. Noise Lett. Vol. 5, L349-L355 (2005) |
Abstract
The study of Planktonic Foraminifera abundances permits to obtain climatic curves on the basis of percentage ratio between tropical and temperate/polar forms. Climatic changes were controlled by several phenomena as: (i) Milankovitch's cycles, produced by variations of astronomical parameters such as precession, obliquity and eccentricity; (ii) continental geodynamic evolution and orogenic belt; (iii) variations of atmospheric and oceanic currents; (iv) volcanic eruptions; (v) meteor impacts. But while astronomical parameters have a quasi-regular periodicity, the other phenomena can be considered as "noise signal" in natural systems. The interplay between cyclical astronomical variations, the "noise signal" and the intrinsic nonlinearity of the ecologic system produces strong glacial or interglacial period according to the stochastic resonance phenomenon.
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"abstract": "The study of Planktonic Foraminifera abundances permits to obtain climatic\ncurves on the basis of percentage ratio between tropical and temperate/polar\nforms. Climatic changes were controlled by several phenomena as: (i)\nMilankovitch\u0027s cycles, produced by variations of astronomical parameters such\nas precession, obliquity and eccentricity; (ii) continental geodynamic\nevolution and orogenic belt; (iii) variations of atmospheric and oceanic\ncurrents; (iv) volcanic eruptions; (v) meteor impacts. But while astronomical\nparameters have a quasi-regular periodicity, the other phenomena can be\nconsidered as \"noise signal\" in natural systems. The interplay between cyclical\nastronomical variations, the \"noise signal\" and the intrinsic nonlinearity of\nthe ecologic system produces strong glacial or interglacial period according to\nthe stochastic resonance phenomenon.",
"arxiv_id": "q-bio/0509023",
"authors": [
"A. Caruso",
"M. E. Gargano",
"D. Valenti",
"A. Fiasconaro",
"B. Spagnolo"
],
"categories": [
"q-bio.PE",
"q-bio.QM"
],
"journal_ref": "Published in Fluct. Noise Lett. Vol. 5, L349-L355 (2005)",
"title": "Cyclic Fluctuations, Climatic Changes and Role of Noise in Planktonic Foraminifera in the Mediterranean Sea",
"url": "https://arxiv.org/abs/q-bio/0509023"
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