J 2016

Variations of carbon dioxide in the air and dripwaters of Punkva Caves (Moravian Karst, Czech Republic)

PRACNÝ, Pavel, Jiří FAIMON, Ludvík KABELKA and Jiří HEBELKA

Basic information

Original name

Variations of carbon dioxide in the air and dripwaters of Punkva Caves (Moravian Karst, Czech Republic)

Authors

PRACNÝ, Pavel (203 Czech Republic, guarantor, belonging to the institution), Jiří FAIMON (203 Czech Republic, belonging to the institution), Ludvík KABELKA (203 Czech Republic) and Jiří HEBELKA (203 Czech Republic)

Edition

Carbonates and Evaporites, Springer, 2016, 0891-2556

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Geochemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 0.632

RIV identification code

RIV/00216224:14310/16:00089095

Organization unit

Faculty of Science

UT WoS

000387824200005

Keywords (in Czech)

Oxid uhličitý (CO2); jeskyně; odplyňování; skapová voda; model; periodicita

Keywords in English

Carbon dioxide (CO2); Cave; Degassing; Dripwater; Model; Periodicity

Tags

International impact, Reviewed
Změněno: 16/4/2017 23:01, Ing. Andrea Mikešková

Abstract

V originále

Carbon dioxide (CO2) was studied in Punkva Caves in the Moravian Karst (Czech Republic) during a one-year period from February 2012 to March 2013. Partial pressures of the CO2 corresponding to aqueous carbonates, PCO2(W) (10-2.91-10-2.35, i.e., 0.12-0.45 vol%), and those participating in the initial dripwater formation, PCO2(H) (10-1.77-10-1.49, i.e., 1.7-3.2 vol%), were calculated from dripwater hydrogeochemistry, and compared with the partial pressure in cave air, PCO2(air) (10-3.31-10-2.49, i.e., 0.06-0.32 vol%). Both the PCO2(air) and PCO2(W) showed clear seasonal variations with maxima in summer and minima in winter. In contrast, the PCO2(H) was very stable without any significant seasonality, which could indicate its independence on surface conditions. As an exception, one anomalous drip with significantly lower and varying PCO2(W), PCO2(H), and SIcalcite was recognized as a result of prior calcite precipitation. Evolution of dripwater during CO2 degassing and calcite precipitation is demonstrated in detail in a geochemical model. The study presents new data indicating that the CO2 source might be deployed in deeper parts of karst profile (epikarst) in addition to karst soils.