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Verfasst von:Riechelmann, Dana [VerfasserIn]   i
 Schröder-Ritzrau, Andrea [VerfasserIn]   i
 Scholz, Denis [VerfasserIn]   i
 Fohlmeister, Jens [VerfasserIn]   i
 Spötl, Christoph [VerfasserIn]   i
 Richter, Detlev K. [VerfasserIn]   i
 Mangini, Augusto [VerfasserIn]   i
Titel:Monitoring Bunker Cave (NW Germany)
Titelzusatz:a prerequisite to interpret geochemical proxy data of speleothems from this site
Verf.angabe:Dana Felicitas Christine Riechelmann, Andrea Schröder-Ritzrau, Denis Scholz, Jens Fohlmeister, Christoph Spötl, Detlev Konrad Richter, Augusto Mangini
E-Jahr:2011
Jahr:12 September 2011
Umfang:14 S.
Fussnoten:Gesehen am 15.09.2022
Titel Quelle:Enthalten in: Journal of hydrology
Ort Quelle:Amsterdam [u.a.] : Elsevier, 1963
Jahr Quelle:2011
Band/Heft Quelle:409(2011), 3, Seite 682-695
ISSN Quelle:1879-2707
Abstract:Monitoring cave environments is important to understand processes in karst systems. If stalagmites from a specific cave are used as archives of past climate variability, a quantitative understanding of the soil-karst-speleothem system is crucial. The monitoring program performed in Bunker Cave (NW Germany), which includes monthly collection of climatological data as well as air and water samples from the cave and the overlying soil since 2006, is a prerequisite for the interpretation of speleothem data from the cave in terms of climate variability. The results show that Bunker Cave is a homogeneously ventilated cave with rather low pCO2 values of 580-1200ppmv, which lacks strong seasonal variations. The δ18O value of cave drip water reflects the mean annual composition of the rain water, and the seasonal variability is strongly attenuated indicating a well-mixed karst aquifer. Hence, stalagmites from Bunker Cave should be well suited to record interannual/decadal climate trends. Seven drip sites in two cave chambers show three different types of discharge behaviour including slow seasonal drip, fast seasonal drip, and seepage-flow. The drip-rate patterns of most drip sites are consistent with the main infiltration events, taking into account a delay of several months. An instantaneous response to precipitation (i.e., piston-flow) is not observed for any drip site indicating a specific water capacity threshold in the soil/karst aquifer. Prior Calcite Precipitation (PCP) was also identified especially during times of low discharge. Though PCP is not as pronounced at Bunker Cave as in other caves, it probably has an influence on the Mg/Ca ratios of the stalagmites.
DOI:doi:10.1016/j.jhydrol.2011.08.068
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1016/j.jhydrol.2011.08.068
 Volltext: https://www.sciencedirect.com/science/article/pii/S0022169411006330
 DOI: https://doi.org/10.1016/j.jhydrol.2011.08.068
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Cave monitoring
 Hydro-geochemistry
 Karst water
 Stable isotopes
K10plus-PPN:1816725676
Verknüpfungen:→ Zeitschrift

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