Article (Scientific journals)
A case study of anthropogenic impact on the CO2 levels in low-volume profile of the Balcarka Cave (Moravian Karst, Czech Republic)
Lang, Marek; Faimon, Jiri; Ek, Camille
2015In Acta Carsologica, 44 (1), p. 71-80
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Keywords :
airflow,; anthropogenic impact,; carbon dioxide,; dynamic mode; show cave,; Slovenia; flux d'air; impact humain; dioxyde de carbone; mode dynamique; grotte touristique; Slovénie
Abstract :
[en] Anthropogenic impact on CO2 levels was studied in the low-volume chamber connected with the low-profile corridor in Balcarka Cave, the show cave in Moravian Karst, during the period of limited ventilation. Modeling showed that the natural CO2 levels were controlled by the CO2 fluxes (up to ~ 3.14 × 10-2 mol s-1) from adjacent spaces. These fluxes changed with cave airflows and ventilation modes. Two main components of anthropogenic impact were recognized: (1) visitor breathing and (2) visitor movement. The CO2 input derived from individual visitor groups varied from 1.96 × 10-4 to 2.45 × 10-3 mol s-1, which was the significant part of the CO2 fluxes from adjacent spaces. The visitor movement induced the airflows up to 0.2 m3 s-1. They exceeded the natural airflows (up to 3.2 × 10-3 m3 s-1) by factor of more than 60. These airflows caused cave ventilation mode’s switching and, significant drop of CO2 fluxes/levels due to changed ventilation. The study therefore indicates that various anthropogenic influences in show cave can balance and neutralize each other, in dependence on cave morphology and seasonal conditions.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Lang, Marek
Faimon, Jiri
Ek, Camille  ;  Université de Liège > Relations académiques et scientifiques (Sciences)
Language :
English
Title :
A case study of anthropogenic impact on the CO2 levels in low-volume profile of the Balcarka Cave (Moravian Karst, Czech Republic)
Publication date :
2015
Journal title :
Acta Carsologica
ISSN :
0583-6050
eISSN :
1580-2612
Publisher :
Institute za Raziskovanje Krasa, Slovenia
Volume :
44
Issue :
1
Pages :
71-80
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 August 2015

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