Skip to Main content Skip to Navigation

Welcome to the Resources Reservoirs and Hydrosystems Group collection

Number of resources



Number of fulltexts




Chargement de la page



Chargement de la page


Latest submissions in HAL !

[hal-03117327] Analysis and stochastic simulation of geometrical properties of conduits in karstic networks

Despite intensive explorations by speleologists, karstic systems remain only partially described as many conduits are not accessible to humans. The classical exploration techniques produce sparse data, leading to various uncertainties about the conduit dimensions, essential parameters for flow simulations. Stochastic simulations offer a possibility to better assess these uncertainties. In this paper, we propose different methods to stochastically simulate the properties (size and shape anisotropy) of karstic conduits on already existing skeletons. These approaches, based on Sequential Gaussian Simulations (SGS), allow taking different conditioning data into account, while respecting the intricacy of the networks. To infer the input parameters, we perform a statistical study of the conduit dimensions of 49 explored karstic networks, focusing on their equivalent radius and width-height ratio. Thanks to the definition of 1D-curvilinear variograms, we demonstrate the existence of a spatial correlation along the networks, which is even higher when considering independently each conduit. Finally, using ad hoc algorithms implemented for computing both a conduit hierarchy inside karstic networks and a relative position regarding outputs, we find no evidence of an obvious link between these two entities and the studied metrics. The simulation methods are then demonstrated on the karstic network of Arrestelia (Pyrénées-Atlantiques, France), and show the consistency of the proposed approach with the observations made on the explored natural systems.

[hal-03099129] Electric potential anomaly induced by humid air convection within Piton de La Fournaise volcano, La Réunion Island


[hal-03100186] A geochemical and geophysical investigation of the hydrothermal complex of Masaya volcano, Nicaragua




Catherine Beaussier
Tél. (+33) 4 95 04 41 43

Archive créée et administrée sur la plateforme HAL du CCSD

Legal aspects : Contributor obligations

Dépôt de fichier : que faire en fonction de la version que vous déposez






Evolution of the submissions