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Speleology in Kazakhstan

Shakalov on 04 Jul, 2018
Hello everyone!   I pleased to invite you to the official site of Central Asian Karstic-Speleological commission ("Kaspeko")   There, we regularly publish reports about our expeditions, articles and reports on speleotopics, lecture course for instructors, photos etc. ...

New publications on hypogene speleogenesis

Klimchouk on 26 Mar, 2012
Dear Colleagues, This is to draw your attention to several recent publications added to KarstBase, relevant to hypogenic karst/speleogenesis: Corrosion of limestone tablets in sulfidic ground-water: measurements and speleogenetic implications Galdenzi,

The deepest terrestrial animal

Klimchouk on 23 Feb, 2012
A recent publication of Spanish researchers describes the biology of Krubera Cave, including the deepest terrestrial animal ever found: Jordana, Rafael; Baquero, Enrique; Reboleira, Sofía and Sendra, Alberto. ...

Caves - landscapes without light

akop on 05 Feb, 2012
Exhibition dedicated to caves is taking place in the Vienna Natural History Museum   The exhibition at the Natural History Museum presents the surprising variety of caves and cave formations such as stalactites and various crystals. ...

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That radioisotope is an unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation [22].?

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KarstBase a bibliography database in karst and cave science.

Featured articles from Cave & Karst Science Journals
Chemistry and Karst, White, William B.
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Calculating flux to predict future cave radon concentrations, Rowberry, Matt; Marti, Xavi; Frontera, Carlos; Van De Wiel, Marco; Briestensky, Milos
Microbial mediation of complex subterranean mineral structures, Tirato, Nicola; Torriano, Stefano F.F;, Monteux, Sylvain; Sauro, Francesco; De Waele, Jo; Lavagna, Maria Luisa; D’Angeli, Ilenia Maria; Chailloux, Daniel; Renda, Michel; Eglinton, Timothy I.; Bontognali, Tomaso Renzo Rezio
Evidence of a plate-wide tectonic pressure pulse provided by extensometric monitoring in the Balkan Mountains (Bulgaria), Briestensky, Milos; Rowberry, Matt; Stemberk, Josef; Stefanov, Petar; Vozar, Jozef; Sebela, Stanka; Petro, Lubomir; Bella, Pavel; Gaal, Ludovit; Ormukov, Cholponbek;
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Ukrainian Institute of Speleology and Karstology, Simferopol
Hypogene speleogenesis and karst hydrogeology of artesian basins, 2009, p. 75-81
SPELEOGENESIS OF MEDITERRANEAN KARSTS: A MODELLING APPROACH BASED ON REALISTIC FRACTURE NETWORKS
Abstract:

There are several numerical modelling approaches of speleogenesis in existence today. They take into account physical and chemical laws for flow and dissolution in fractured carbonate aquifers. Nevertheless, the initial void networks considered by these models generally do not correspond to the fracturing reality. The approach proposed here aims to simulate speleogenesis in an aquifer characterized by a fracture network, while matching field reality as closely as possible and respecting geometrical properties. Using statistical and geometrical parameters obtained by field observations and analogue experiments, it is possible to generate 3-D realistic networks in terms of the relative position of joints that control the overall network connectivity. Once the fracture networks are generated, they are adapted and incorporated in a 3-D ground water flow and transport finite element model. The flow simulations in the fracture networks allow determination of the spatial distribution of flow velocities for the initial configuration. This distribution, added to other information such as age and travel time, is used to simulate the evolution of the apertures of the different elements. This paper mainly presents the theoretical basis for the proposed method, from the fracturing model to the incorporation of the generated network in the flow model. Then, it describes the principles leading to forthcoming first benchmark simulations which will be used to develop the analogical rules concerning karst aquifer evolution, and for lead sensibility analysis.