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The book "Hypogene Karst Regions and Caves of the World" is finished
The book “Hypogene Karst Regions and Caves of the World” is going to be published by Springer, in its series “Cave and Karst Systems of the World”.
Karst session at the AGU Fall 2016 Meeting in San Francisco
There will be a karst session at the AGU Fall 2016 Meeting in San Francisco, USA in December 12-16: Characterization, Modeling, and Remediation of Fissured, Carbonate, and Karst Groundwater Systems
A new book on caves and karst in Austria
A book "Höhlen und Karst in Österreich" (Caves and karst in Austria; Editors: Christoph Spötl, Lukas Plan & Ehrad Christian) will be printed until mid of July. Subscription is available.
Unusual perspective on caves
Many inspiring ideas on caves can be found in images created by children, generated by the International Contest of Kid’s Drawing "Caves in the Eyes of our Children".
Session on Karst Aquifers at the 43th IAH Congress, France
A call to submit an abstract to a session devoted to karst aquifers, which will be held in September in Montpellier during the 43rd IAH Congress

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Did you know?

That uniform flow is flow with constant velocity at all points and at all times [16].?

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

Featured article from karst/cave journal

NSS
Journal of Cave and Karst Studies, 2010, Vol 72, Issue 1, p. 43-58
The sulfidic thermal caves of Acquasanta Terme (central Italy)
Abstract:

The caves of Acquasanta Terme (central Italy) open at the core of a wide anticline, in the valley of the Tronto River. Cave development is due to the rise of sulfidic thermal water flowing through a thick marine limestone sequence, overlain by thick, low- permeability formations. Some minor caves are developed in the terraced travertines deposited by the thermal water, but the major caves are developed in marine limestone in the small gorge of the Rio Garrafo stream, a tributary of the Tronto River. These caves have a rising pattern, due to the past flow of thermal water toward the surface. The deepening of the Tronto River Valley lowered the regional water table, perching the Rio Garrafo stream ,50 m above the thermal groundwater. At present, surface water sinks through the pre-existing karst passages to reach the thermal water flowing in the lower parts of the caves. Where these waters mix, rapid corrosion of the walls through sulfuric acid speleogenesis occurs. Annual temperature and chemistrymonitoring of the cave water showed that freshwater contributes up to 45% of the volume at the water table. Dilution events are associated with falling water temperature, which ranges between 44uC and 32uC. At the main spring, 2 km downstream, groundwater dilution was higher resulting in lower temperatures (32uC–21uC) and salinity. The periods of high freshwater dilution correspond with a lowering of pHin the phreatic water and with the release ofH2S and CO2 to the cave atmosphere. In the thermal zones, the concentration of H2S increased from 40 to over 240 ppm, while CO2 increased from 0.44% to 2.7%. These data evidence the influence of sinking surface water on the cave environment and speleogenesis.