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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. ...

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. ...

Speleology in Kazakhstan

Shakalov on 11 Jul, 2012
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. ...

Did you know?

That basin, infiltration is basin in which water is spread for recharge [16].?

Checkout all 2699 terms in the KarstBase Glossary of Karst and Cave Terms

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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.
Engineering challenges in Karst, Stevanović, Zoran; Milanović, Petar
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Featured articles from other Geoscience Journals
Geochemical and mineralogical fingerprints to distinguish the exploited ferruginous mineralisations of Grotta della Monaca (Calabria, Italy), Dimuccio, L.A.; Rodrigues, N.; Larocca, F.; Pratas, J.; Amado, A.M.; Batista de Carvalho, L.A.
Karst environment, Culver D.C.
Mushroom Speleothems: Stromatolites That Formed in the Absence of Phototrophs, Bontognali, Tomaso R.R.; D’Angeli Ilenia M.; Tisato, Nicola; Vasconcelos, Crisogono; Bernasconi, Stefano M.; Gonzales, Esteban R. G.; De Waele, Jo
Calculating flux to predict future cave radon concentrations, Rowberry, Matt; Marti, Xavi; Frontera, Carlos; Van De Wiel, Marco; Briestensky, Milos
See all featured articles from other geoscience journals

Featured article from geoscience journal

Water Resources Research/WATER RESOURCES RESEARCH, 2013, Vol 49, Issue 9, p. 5880-5899
Early-stage hypogene karstification in a mountain hydrologic system: A coupled thermohydrochemical model incorporating buoyant convection
Abstract:
The early stage of hypogene karstification is investigated using a coupled
thermohydrochemical model of a mountain hydrologic system, in which water enters along a
water table and descends to significant depth (1 km) before ascending through a central
high-permeability fracture. The model incorporates reactive alteration driven by dissolution/
precipitation of limestone in a carbonic acid system, due to both temperature- and pressuredependent
solubility, and kinetics. Simulations were carried out for homogeneous and
heterogeneous initial fracture aperture fields, using the FEHM (Finite Element Heat and Mass
Transfer) code. Initially, retrograde solubility is the dominant mechanism of fracture aperture
growth. As the fracture transmissivity increases, a critical Rayleigh number value is exceeded
at some stage. Buoyant convection is then initiated and controls the evolution of the system
thereafter. For an initially homogeneous fracture aperture field, deep well-organized buoyant
convection rolls form. For initially heterogeneous aperture fields, preferential flow suppresses
large buoyant convection rolls, although a large number of smaller rolls form. Even after the
onset of buoyant convection, dissolution in the fracture is sustained along upward flow paths
by retrograde solubility and by additional ‘‘mixing corrosion’’ effects closer to the surface.
Aperture growth patterns in the fracture are very different from those observed in simulations
of epigenic karst systems, and retain imprints of both buoyant convection and preferential
flow. Both retrograde solubility and buoyant convection contribute to these differences. The
paper demonstrates the potential value of coupled models as tools for understanding the
evolution and behavior of hypogene karst systems.