Relationship between carbon dioxide in Balcarka Cave and adjacent soils in the Moravian Karst region of the Czech Republic

Faimon, Jiřı́; Ličbinská, Monika; Zajíček, Petr

doi:10.5038/1827-806x.41.1.3

Cited by 34 publications

(32 citation statements)

References 53 publications

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“…Various sinkholes and shafts filled with porous sediment and representing a section into the karst's vertical profile may serve as the entrances for such transport. Peak values of the CO 2 concentrations measured in the soils above the Balcarka Cave reach up to 4,500 ppmv (Faimon et al, 2012c). Under the correction for the drill-hole diameter at monitoring (Blecha & Faimon, 2014), the peak values could even reach up to ~6,000 ppmv (2.6 x 10 -1 mol m -3 ).…”

Section: Natural Influencementioning

confidence: 88%

“…The site of study, the Balcarka Cave, is situated in the northern part of the Moravian Karst near the village of Ostrov u Macochy (Faimon et al, 2012c). The sketch map of the cave with characteristic sites and their positions at different altitudes is illustrated in Fig.…”

Section: Site Of Studymentioning

confidence: 99%

“…The cave is seasonally open to tourists with a total attendance of 30,000 to 40,000 persons per year. In the area above the Balcarka Cave, three soil types were identified: Anthrosol, lithic Leptosol, and brown rendzic Leptosol based on the vegetation such as pastures, mixed forest, and karst meadows, respectively (see Faimon et al, 2012c for details). The annual temperature of the external atmosphere at the given site is of ~8°C.…”

Section: Site Of Studymentioning

confidence: 99%

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The relationship between carbon dioxide concentration and visitor numbers in the homothermic zone of the Balcarka Cave (Moravian Karst) during a period of limited ventilation

Lang¹,

Faimon²,

Ek³

2015

IJS

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Section: Natural Influencementioning

confidence: 88%

Section: Site Of Studymentioning

confidence: 99%

Section: Site Of Studymentioning

confidence: 99%

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The relationship between carbon dioxide concentration and visitor numbers in the homothermic zone of the Balcarka Cave (Moravian Karst) during a period of limited ventilation

Lang¹,

Faimon²,

Ek³

2015

IJS

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“…-5 m 2 s -1 ) were applied, in order to cover nonhomogeneous structure of cave overburden. The CO 2 concentrations directly measured in upper parts of the soil profiles in the Moravian Karst range from 1,000 to 10,000 ppmv (4.3 × 10 -2 to 0.43 mol m -3 ) (Faimon & Ličbinská, 2010;Faimon et al, 2012b;Blecha & Faimon, 2014). A narrower range is reported for cave CO 2 concentrations.…”

Section: Discussionmentioning

confidence: 99%

The impact of door opening on CO2 levels: A case study from the Balcarka Cave (Moravian Karst, Czech Republic)

Lang¹,

Faimon²,

Kejíková³

2017

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Abstract:The impact of door opening on cave carbon dioxide (CO 2 ) levels was studied in the Entrance Chamber and the Gallery Chamber of the Balcarka Cave (Moravian Karst, Czech Republic). The effect of door opening differed with cave ventilation modes. Under upward airflow mode, the cave door opening led to the increase of output advective CO 2 fluxes from the cave and to the decrease of CO 2 levels. This effect was evident especially in the Entrance Chamber near the cave entrance and then suppressed in the Gallery Chamber situated deeper in the cave. Under the downward airflow mode, the cave door opening changed airflow paths and main CO 2 sources/fluxes. This resulted in the increase of CO 2 level in the Entrance Chamber while the levels in the Gallery Chamber decrease. Modeling indicates that the increase could be result of input advective CO 2 fluxes from epikarst (up to 5.9 × 10 -2 mol s -1 ). To reduce the impact on cave microclimate, a careful control of the visiting regime without overlapping of individual doors' openings is recommended. cave chamber, CO 2 levels, cave ventilation, door opening, advective CO 2 flux

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“…This makes possible that 222 Rn concentration, emitted by soil and rock, increases constantly in the cavity. This state also allows that a direct diffusion of CO2 soil derived to the cavity (Faimon et al, 2012) August, when the cave CO2 levels exceed soil CO2 concentration, CO2 concentration climbs to maximums. Soil, epikarst and cave are continuously communicated.…”

Section: Gaseous Recharge Of Rull Cavementioning

confidence: 99%

Changes in the CO2 dynamics in near-surface cavities under a future warming scenario: Factors and evidence from the field and experimental findings

Pla

Cuezva

Garcia-Anton

et al. 2016

Science of The Total Environment

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This study is based in a field monitoring of a cave-soil-atmosphere system validated with laboratory experimentation. CO2 and 222 Rn dynamics in the cavity demonstrate the dependence on the climatic parameters, mainly on the differences between outdoor and indoor temperatures. Within the cave, the annual cycles are characterized by two outstanding moments: cave gaseous recharge and ventilation when cave acts as gaseous sink or source respectively. Relationship with soil above the cave exists permanently. Soil temperature and moisture are responsible for CO2 production at different time scales.Soil CO2 in Rull site reaches values higher than 3000 ppm in April-May, which falls to nearly 1000 ppm during the summer time. Due to CO 2 diffusion, maximum values in the cave are reached in the warmest months and are in accordance to soil CO2 values. Within the cave, maximum CO2 concentration is, in average, 3470 ppm while minimum is 623 ppm. Cave temperature and relative humidity remain quite stable with mean values of 16.1 ºC and 97.9% respectively. To describe field findings, CO2 production and diffusion experiments are developed related to soil behaviour. Results show that soil CO2 production increases as soil temperature and moisture increase according to a calculated logarithmic equation until water content in soil exceeds the saturation values. In addition, CO2 diffusion in Rull soil is reduced around 60% when water content in soil increases from 0 to 30%. Soil-produced CO2 reaches Rull cave, by diffusion. We estimate 57 kg of emitted CO2 from the cave to the atmosphere in an annual cycle, considering a volume of 9915 m 3 . Finally, projections of future climate in the study site confirm a general tendency for annual-mean conditions to be warmer and drier, which will directly affect soil CO2 production. Under this situation, Rull cave will experience changes in the stored and then exchanged annual amount of CO2.

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Relationship between carbon dioxide in Balcarka Cave and adjacent soils in the Moravian Karst region of the Czech Republic

Cited by 34 publications

References 53 publications

The relationship between carbon dioxide concentration and visitor numbers in the homothermic zone of the Balcarka Cave (Moravian Karst) during a period of limited ventilation

The relationship between carbon dioxide concentration and visitor numbers in the homothermic zone of the Balcarka Cave (Moravian Karst) during a period of limited ventilation

The impact of door opening on CO2 levels: A case study from the Balcarka Cave (Moravian Karst, Czech Republic)

Changes in the CO2 dynamics in near-surface cavities under a future warming scenario: Factors and evidence from the field and experimental findings

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