Spatial variability in cave drip water hydrochemistry: Implications for stalagmite paleoclimate records

Baldini, James U.L.; McDermott, Frank; Fairchild, Ian J.

doi:10.1016/j.chemgeo.2006.08.005

Cited by 134 publications

(145 citation statements)

References 23 publications

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“…The complexity of sitespecific controls on oxygen and carbon isotopes is recognised within speleothem studies (Lachniet, 2009); as such, it is necessary to investigate the impact of precipitation geochemistry (Fischer and Treble, 2008), processes in the aerated (vadose) zone above the cave (Dreybrodt and Scholz, 2011), and in-cave conditions (Baldini et al, 2006) on the δ 18 O signal preserved in each speleothem. Oxygen isotopes in mid-latitude Australian speleothems primarily record rain-fall amount through precipitation isotopic composition (Treble et al, 2005a) or record karst aquifer recharge frequency (Markowska et al, 2016), whereas tropical samples from Indonesia and the monsoonal region of northern Australia are more sensitive to the intensity of precipitation (Denniston et al, 2013;Griffiths et al, 2013).…”

Section: Speleothemsmentioning

confidence: 99%

Low-resolution Australasian palaeoclimate records of the last 2000 years

et al. 2017

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Abstract. Non-annually resolved palaeoclimate records in the Australasian region were compiled to facilitate investigations of decadal to centennial climate variability over the past 2000 years. A total of 675 lake and wetland, geomorphic, marine, and speleothem records were identified. The majority of records are located near population centres in southeast Australia, in New Zealand, and across the maritime continent, and there are few records from the arid regions of central and western Australia. Each record was assessed against a set of a priori criteria based on temporal resolution, record length, dating methods, and confidence in the proxy-climate relationship over the Common Era. A subset of 22 records met the criteria and were endorsed for subsequent analyses. Chronological uncertainty was the primary reason why records did not meet the selection criteria. New chronologies based on Bayesian techniques were constructed for the high-quality subset to ensure a consistent approach to age modelling and quantification of age uncertainties. The primary reasons for differences between published and reconstructed age-depth models were the consideration of the non-singular distribution of ages in calibrated 14 C dates and the use of estimated autocorrelation between sampled depths as a constraint for changes in accumulation rate. Existing proxies and reconstruction techniques that successfully capture climate variability in the region show potential to address spatial gaps and expand the range of climate variables covering the last 2000 years in the Australasian region. Future palaeoclimate research and records in Australasia could be greatly improved through three main actions: (i) greater data availability through the public archiving of published records; (ii) thorough characterisation of proxy-climate relationships through site monitoring and climate sensitivity tests; and (iii) improvement of chronologies through coretop dating, inclusion of tephra layers where possible, and increased date density during the Common Era.

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Section: Speleothemsmentioning

confidence: 99%

Low-resolution Australasian palaeoclimate records of the last 2000 years

et al. 2017

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“…Ions in cave dripwater may be derived from incoming meteoric precipitation, dust, sea spray and soil/bedrock leaching (Baker et al, 2000;Fairchild and Treble, 2009;Hartland et al, 2012), although their ultimate concentrations may be dominated by subsequent water/rock interactions occurring along individual water flow paths associated with the hydrological routing (Tooth and Fairchild, 2003;Baldini et al, 2006;. Their appeal as proxies lies in their sensitivity to various hydrological and biogeochemical processes, which have been validated via modern speleothem studies.…”

Section: Introductionmentioning

confidence: 99%

Roles of forest bioproductivity, transpiration and fire in a nine-year record of cave dripwater chemistry from southwest Australia

Treble

Fairchild

Baker³

et al. 2016

Geochimica et Cosmochimica Acta

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“…In addition, HCO 3 -and Ca 2+ at SS2 in April and June show distinct sequential variation, even though the drip rates during these periods are similar to those in July and August when HCO 3 -and Ca 2+ show no minor sequential difference. Some previous studies have shown low correlation between the drip rate and drip water geochemistry, for instance, at the Obir Cave in Austria (Spötl et al, 2005) and the Crag Cave in Ireland (Baldini et al, 2006). Banner et al (2007) Shindoh, Mishima, Watanabe, Ohsawa, and Tagam and demonstrated that the CaCO 3 deposition rate correlates more with the cave air P CO 2 than the drip rate.…”

Section: +mentioning

confidence: 99%

“…PCP has been reported as a well-known process in numerous caves and has an effect on drip water geochemistry (Fairchild et al, 2000(Fairchild et al, , 2006McDonald et al, 2007;Boch et al, 2011;Treble et al, 2015). CO 2 degassing and subsequent CaCO 3 precipitation are likely if the percolating water finds any passageways or air pockets with lower air P CO 2 within the carbonate rock matrix than the percolating water's P CO 2 .…”

Section: +mentioning

confidence: 99%

Seasonal cave air ventilation controlling variation in cave air PCO2 and drip water geochemistry at Inazumi Cave, Oita, northeastern Kyushu, Japan

Shindoh¹,

Mishima²,

Watanabe³

et al. 2017

JCKS

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To compare the influence of cave air P CO 2 and drip rate on the drip water geochemistry, approximately one year of cave air monitoring and sampling of drip water were conducted at Inazumi Cave, Oita, northeastern Kyushu, Japan, from February to December 2014. The monitoring revealed that temperature dependent cave air ventilation controlled distinct seasonal variation in the cave air P CO 2 and minor variation in temperature and relative humidity with increasing distance from the cave entrance. In addition to traditional sampling of drip water, novel sampling methods were designed to compare the influence of the P CO 2 and the drip rate on the karstic and drip water geochemistry. The chemical analysis indicated that the karstic and drip water instantaneously outgassed CO 2 once in contact with low cave air P CO 2 . The drip rate alone, however, had less significant influence on the drip water geochemistry than the P CO 2 . The drip water P CO 2 was repeatedly lower than cave air P CO 2 , and this is probably due to prior calcite precipitation, to a temporal increase of the cave air P CO 2 by anthropogenic CO 2 , or to storage conditions of the sample; all of which cause alteration of drip water geochemistry from the original state.

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Spatial variability in cave drip water hydrochemistry: Implications for stalagmite paleoclimate records

Cited by 134 publications

References 23 publications

Low-resolution Australasian palaeoclimate records of the last 2000 years

Low-resolution Australasian palaeoclimate records of the last 2000 years

Roles of forest bioproductivity, transpiration and fire in a nine-year record of cave dripwater chemistry from southwest Australia

Seasonal cave air ventilation controlling variation in cave air PCO2 and drip water geochemistry at Inazumi Cave, Oita, northeastern Kyushu, Japan

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