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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. ...

Did you know?

That atmometer is an instrument used to measure evaporation intensities [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.
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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
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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NSS
Journal of Cave and Karst Studies, 2009, Vol 71, Issue 2, p. 130-135
The genesis of cave rings explained using empirical and experimental data
Abstract:
A cave ring is a faint speleothem consisting in a thin circle on the floor symmetrically surrounding a water drop impact point. Two different mechanisms seem to be responsible for cave ring formation: the drop splash at the floor, for the splash rings, and the ejection of a secondary droplet during the fall, for the fall down rings. A systematic investigation of 67 speleothem rings discovered in five different caves in central Italy was conducted. The data show compatibility with a common nature for all the observed rings. For the observed rings, the hypothesis of a falling secondary droplet origin is confirmed and the hypothesis of a primary drop splash is rejected. The trajectory of a secondary droplet has been measured, and the collected data suggest that the secondary droplets originate from a primary drop breakup at a distance y0 5 142.7 6 7.2 cm from the stalactite tip. Assuming this spontaneous breakup hypothesis, the velocities ratio b 5 uy/ux 5 25.5 6 1.6 at the breakup time was measured. Finally, the collected ring data (5-cm- to 50-cm-diameter range) exhibit a negative curva- ture trajectory. The large departure from a gravity dominant parabolic trajectory suggests other forces, such as air friction or lift force, are at work on the small secondary droplets.