FAIMON, Jiří, Jiří ZIMÁK, Petr ZAJÍČEK, Monika SCHWARZOVÁ a Jindřich ŠTELCL. The study of recent destructive processes in the Moravian Karst caves (Czech republic). Geographica. Olomouc: Palacký University Olomouc, 2004, roč. 38, č. 1, s. 9-13. ISSN 0231-9365.
Další formáty:   BibTeX LaTeX RIS
Základní údaje
Originální název The study of recent destructive processes in the Moravian Karst caves (Czech republic)
Název česky Studium recentních destruktivních procesů v jeskyních Moravského krasu (ČR)
Autoři FAIMON, Jiří (203 Česká republika, garant), Jiří ZIMÁK (203 Česká republika), Petr ZAJÍČEK (203 Česká republika), Monika SCHWARZOVÁ (203 Česká republika) a Jindřich ŠTELCL (203 Česká republika).
Vydání Geographica, Olomouc, Palacký University Olomouc, 2004, 0231-9365.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor Geochemie
Stát vydavatele Česká republika
Utajení není předmětem státního či obchodního tajemství
Kód RIV RIV/00216224:14310/04:00028902
Organizační jednotka Přírodovědecká fakulta
Klíčová slova česky jeskyně; CO2; koroze; destrukce; skapová voda; pukliny; brčka; přesycení
Klíčová slova anglicky cave; CO2; corrosion; destruction; dripping water; fissures; straw stalactite; supersaturation
Štítky cave, CO2, corrosion, destruction, dripping water, fissures, straw stalactite, supersaturation
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnil: doc. Ing. Jiří Faimon, Dr., učo 1405. Změněno: 15. 2. 2010 12:59.
Anotace
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.
Anotace česky
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.
Návaznosti
GA205/03/1128, projekt VaVNázev: Recentní krasové procesy: destrukce speleotém
Investor: Grantová agentura ČR, Standardní projekty
VytisknoutZobrazeno: 22. 6. 2021 01:40