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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 squeeze is a narrow passage or opening just passable with effort. differs from flattener in that there is little spare space in any direction [10].?

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

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Browse Speleogenesis Issues:

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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Featured articles from other Geoscience Journals
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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Your search for karst landscapes (Keyword) returned 50 results for the whole karstbase:
Showing 46 to 50 of 50
Surface Roughness of Karst Landscapes, 2013, Day M. , Chenoweth S.

Surface roughness, also termed landscape, terrain, or topographic roughness in geomorphology, is directly connected to theunevenness of surface elevation values. There are many methods to measure surface roughness mathematically: the ratio ofsurface area and its projection onto a horizontal plane, frequency distributions, fractal analysis, and surface curvature.Recent innovations in remote sensing and geographic information systems have resulted in a renaissance of surfaceroughness in geomorphology as a component of digital terrain modeling. Specific morphometric characterizations of karstterrain roughness have been dogged by issues of data availability and accuracy. The Shuttle Radar Topography Missionsolved many of these problems, providing reliable and accurate elevation data for most of the inhabited world. However,tropical karst landscapes in particular are often heavily forested, obscuring the true surface roughness

Epikarst Processes, 2013, Bakalowicz, M.

Epikarst forms the interface zone between the infiltration zone and soil and plant cover. It is the superficial part of karst landscapes characterized by a fracturing more developed than in the underlying infiltration zone, because of the action of rock constraints, climate, and plants. The processes at the origin of epikarst are described, as well as those contributing to its destruction. The part played by epikarst in the functioning of karst aquifers is analyzed. 

MODELLING THE EVOLUTION OF KARST AQUIFERS IN THREE DIMENSIONS/Conceptual models and realistic scenarios Inaugural dissertation/ zur Erlangung des Doktorgrades Dr. rer. nat. am Fachbereich Geowissenschaften im Institut fur Geologische Wissenschaften der Fr, 2013, Hiller, Thomas

This work presents the development of three dimensional karst evolution models for various settings and conditions. As karst aquifers are very sensitive to changes of their hydraulic boundary conditions a comprehensive understanding of the governing processes inside a karst aquifer is indispensable. Especially if a karst aquifer is inuenced by anthropogenic utilization like e.g. the construction of a dam site, the resulting changes inside the aquifer need to be understood as good as possible to prevent any unpredictable incidents. The use of numerical models to simulate the development of a karst aquifer is therefore a suitable tool in the preliminary investigations. It will be shown that simple three dimensional damsite models can be used to evaluate the parameters that control the karst aquifer evolution. Based on these simple models an enhanced three dimensional model of a real damsite is developed. This model is used to simulate the evolution of the aquifer close to this damsite and to expose how the construction of the dam inuenced the nearby bedrock signicantly. It is shown that the karstied zone around the dam site is the reason for the subsidence of an adjacent highway. The presented numerical results can be veried by eld observations. Additionally to the damsite models a three dimensional model approach is presented that describes the formation of large collapse dolines. Collapse dolines are signicant surface features of karst landscapes and their evolution which is usually linked to a subsurface karst system is of high interest in the karst community. To simulate the evolution and interaction of such a doline system, a three dimensional model with several spatially distributed dolines is used. There, based on the concept of a mechanically weakened crushed zone, the evolution over time is presented. The applied collapsing mechanism used in this work also allows to estimate the bedrock removal and surface lowering over time. The determined rates are in good agreement with values reported in literature

Physical Structure of the Epikarst, 2013, Jones, William K.

Epikarst is a weathered zone of enhanced porosity on or near the surface or at the soil/bedrock contact of many karst landscapes. The epikarst is essentially the upper boundary of a karst system but is also a reaction chamber where many organics accumulate and react with the percolating water. The epikarst stores and directs percolating recharge waters to the underlying karst aquifers. Epikarst permeability decreases with depth below the surface. The epikarst may function as a perched aquifer with a saturated zone that transmits water laterally for some distance until it drains slowly through fractures or rapidly at shaft drains or dolines. Stress-release and physical weathering as well as chemical dissolution play a role in epikarst development. Epikarst may be found on freshly exposed carbonates although epikarst that develops below a soil cover should form at a faster rate due to increased carbon dioxide produced by vegetation. The accumulation of soil within the fractures may create plugs that retard the downward movement of percolating water and creates a reservoir rich in organic material. The thickness of the epikarst zone typically ranges from a few meters to 15 meters, but vertical weathering of joints may be much deeper and lead to a “stone forest” type of landscape. Some dolines are hydrologically connected directly to the epikarst while other dolines may drain more directly to the deeper conduit aquifer and represent a “hole” in the epikarst. water stored in the epikarst may be lost to evapotranspiration, move rapidly down vertical shafts or larger joints, or drain out slowly through the soil infillings and small fractures. Much of the water pushed from the epikarst during storms is older water from storage that is displaced by the new event water.

Ecotourism in the state forest karst of Puerto Rico, 2014, Hall A. , Day M.

Ecotourism and nature-based tourism in karst landscapes are often focused on protected areas and are significant both economically and because of potential impacts. Karst covers nearly a third of the highly urbanized island of Puerto Rico, especially adjacent to the north coast and in the southwest. Much of the island’s natureoriented tourism is focused on the karst, because it is the least-fragmented remaining habitat. The authors conducted a literature review and collected data during field research in 2009. The results indicate that the five state (or commonwealth) forests located within the karst of Puerto Rico are a primary focus of ecotourism because they are readily accessible and represent an important resource for low-impact recreation and education. The forests are used by residents and visitors, and they provide opportunities for appreciation and enjoyment of the karst landscape. Ecotourism activities focused on the state forests include hiking, bird-watching, and learning about nature. Without the state forests, levels of ecotourism within the karst would be considerably constrained. So, although they are limited in numbers and extent, they provide a critical recreational and economic resource in the karst landscape.

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