Publications des scientifiques de l'IRD

Saez M., Mangiarotti Sylvain, Cuezva S., Fernandez-Cortes A., Molero B., Sanchez-Moral S., Benavente D. (2021). Global models for Rn-222 and CO2 concentrations in the Cave of Altamira. Theoretical and Applied Climatology, 143 (1-2), 603-626. ISSN 0177-798X.

Titre du document
Global models for Rn-222 and CO2 concentrations in the Cave of Altamira
Année de publication
2021
Type de document
Article référencé dans le Web of Science WOS:000582809200003
Auteurs
Saez M., Mangiarotti Sylvain, Cuezva S., Fernandez-Cortes A., Molero B., Sanchez-Moral S., Benavente D.
Source
Theoretical and Applied Climatology, 2021, 143 (1-2), 603-626 ISSN 0177-798X
The purpose of this paper is to model numerically the dynamics of CO2 and Rn-222 in cave atmospheres, particularly in the noteworthy Cave of Altamira (Spain). We aim to get a better understanding of the nature of these dynamics and their couplings with climatic controls, more specifically the soil water content, which role in the said dynamics poses some questions. For the first time, we apply the global modeling technique in the field of cave microclimate and atmospheric composition. The global modeling technique is a methodology based on the theory of nonlinear systems and designed to extract mathematical models directly from observational time series. We were able to extract four global models from our data. These models represent a step forward from the existent conceptual ones. They also show that CO2 and Rn-222 dynamics can be approximated by low-dimensional, deterministic systems, which can be chaotic or, at least, close to chaos; this has decisive methodological consequences for future research. Moreover, the global modeling technique was used for the first time in a non-autonomous formulation; this enabled the possibility of studying the influence of the external forcing (soil water content) on the gas concentration in different scenarios.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Sciences du milieu [021] ; Géologie et formations superficielles [064]
Description Géographique
ESPAGNE
Localisation
Fonds IRD [F B010079920]
Identifiant IRD
fdi:010079920
Contact