Detailed Information on Publication Record
2004
The study of recent destructive processes in the Moravian Karst caves (Czech republic)
FAIMON, Jiří, Jiří ZIMÁK, Petr ZAJÍČEK, Monika SCHWARZOVÁ, Jindřich ŠTELCL et. al.Basic information
Original name
The study of recent destructive processes in the Moravian Karst caves (Czech republic)
Name in Czech
Studium recentních destruktivních procesů v jeskyních Moravského krasu (ČR)
Authors
FAIMON, Jiří (203 Czech Republic, guarantor), Jiří ZIMÁK (203 Czech Republic), Petr ZAJÍČEK (203 Czech Republic), Monika SCHWARZOVÁ (203 Czech Republic) and Jindřich ŠTELCL (203 Czech Republic)
Edition
Geographica, Olomouc, Palacký University Olomouc, 2004, 0231-9365
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
Geochemistry
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/00216224:14310/04:00028902
Organization unit
Faculty of Science
Keywords (in Czech)
jeskyně; CO2; koroze; destrukce; skapová voda; pukliny; brčka; přesycení
Keywords in English
cave; CO2; corrosion; destruction; dripping water; fissures; straw stalactite; supersaturation
Tags
International impact, Reviewed
Změněno: 15/2/2010 12:59, doc. Ing. Jiří Faimon, Dr.
V originále
This work tried to decide whether an occasionally observed falling of straw stalactites in the Moravian Karst caves is caused by a hypothetical chemical corrosion. The straw stalactite wall was found to be formed by three calcite layers. The middle layer (a stalactite skeleton) was typically cracked in agreement with calcite cleavage. Some impact of chemical corrosion was positively identified on the outer side of straw stalactite walls. Any corrosion of the inner wall of stalactite channel was not explicitly proved. This is consistent with the supersaturation of the majority of monitored dripping waters with respect to calcite (SI=0.2 to 1.2). However, the finding of unsaturated dripping water in the Punkevní Caves (SI=-0.8 to -0.3) did not allow to exclude the chemical corrosion definitively. The seasonal increase of cave CO2-concentrations (up to 1 vol. %) was consistent with increasing number of visitors (up to 28 000 per month in the Punkevní Caves) and with the CO2-production in the soils above caves (up to 1 vol. % in soil atmosphere in Summer). The drop of the cave CO2-concentrations in Fall and Winter roughly corresponds to the decrease of the soil CO2-concentration, visitor number, and probably also to change in cave ventilation. Enhanced concentrations of NO3- in the Amatérská Cave (up to 1.2x10-3 mol/l) indicate anthropogenic pollution.
In Czech
This work tried to decide whether an occasionally observed falling of straw stalactites in the Moravian Karst caves is caused by a hypothetical chemical corrosion. The straw stalactite wall was found to be formed by three calcite layers. The middle layer (a stalactite skeleton) was typically cracked in agreement with calcite cleavage. Some impact of chemical corrosion was positively identified on the outer side of straw stalactite walls. Any corrosion of the inner wall of stalactite channel was not explicitly proved. This is consistent with the supersaturation of the majority of monitored dripping waters with respect to calcite (SI=0.2 to 1.2). However, the finding of unsaturated dripping water in the Punkevní Caves (SI=-0.8 to -0.3) did not allow to exclude the chemical corrosion definitively. The seasonal increase of cave CO2-concentrations (up to 1 vol. %) was consistent with increasing number of visitors (up to 28 000 per month in the Punkevní Caves) and with the CO2-production in the soils above caves (up to 1 vol. % in soil atmosphere in Summer). The drop of the cave CO2-concentrations in Fall and Winter roughly corresponds to the decrease of the soil CO2-concentration, visitor number, and probably also to change in cave ventilation. Enhanced concentrations of NO3- in the Amatérská Cave (up to 1.2x10-3 mol/l) indicate anthropogenic pollution.
Links
| GA205/03/1128, research and development project |
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