The transfer of seasonal isotopic variability between precipitation and drip water at eight caves in the monsoon regions of China

Duan, Wuhui; Ruan, Jinlan; Luo, Weijun; Li, Tingyong; Tian, Lirong; Zeng, Guangneng; Zhang, Dezhong; Bai, Yijun; Li, Jilong; Tao, Tao; Zhang, Pingzhong; Baker, Andy; Tan, Ming

doi:10.1016/j.gca.2016.03.037

Cited by 100 publications

(86 citation statements)

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“…Fuller et al, 2008;Moerman et al, 2014;Riechelmann et al, 2011;Treble et al, 2013;Duan et al, 2016), although the complexity of the response of the speleothem δ 18 O signal to climate is also recognised owing to karst hydrological pathways (Baker and Brunsdon, 2003;, recharge thresholds (Pape et al, 2010;Markowska et al, 2015), and in-cave effects, including disequilibrium during degassing (due to evaporation) and ventilation effects (e.g. Pape et al, 2010;Feng et al, 2012;Deininger et al, 2012;Cuthbert et al, 2014a, b;Riechelmann et al, 2013;Dreybrodt and Deininger, 2014;Rau et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

et al. 2017

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Abstract. Terrestrial data spanning the Last Glacial Maximum (LGM) and deglaciation from the southern Australian region are sparse and limited to discontinuous sedimentological and geomorphological records with relatively large chronological uncertainties. This dearth of records has hindered a critical assessment of the role of the Southern Hemisphere mid-latitude westerly winds on the region's climate during this time period. In this study, two precisely dated speleothem records for Mairs Cave, Flinders Ranges, are presented, providing for the first time a detailed terrestrial hydroclimatic record for the southern Australian drylands during 23-15 ka. Recharge to Mairs Cave is interpreted from the speleothem record by the activation of growth, physical flood layering, and δ 18 O and δ 13 C minima. Periods of lowered recharge are indicated by 18 O and 13 C enrichment, primarily affecting δ 18 O, argued to be driven by evaporation of shallow soil/epikarst water in this water-limited environment. A hydrological driver is supported by calcite fabric changes. These include the presence of laminae, visible organic colloids, and occasional dissolution features, related to recharge, as well as the presence of sediment bands representing cave floor flooding. A shift to slower-growing, more compact calcite and an absence of lamination is interpreted to represent reduced recharge.

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Section: Introductionmentioning

confidence: 99%

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

et al. 2017

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“…On decadal scale, relationships between δ 18 O and rainfall have previously been discussed (Hu et al, 2008a) (Duan et al, 2016). Liangfeng is close to Dongge (25 • 17 N, 108 • 5 E; Fig.…”

Section: Rainfall Reconstructionmentioning

confidence: 70%

“…From them, LF6 with the lowest drip rate but highest variation has been selected, as it is considered to record climate information more efficiently. The lowest drip rate of LF6 from Liangfeng cave suggests fresh water is being mixed with delayed transit stored water at this drip site (Zeng et al, 2015) and may pro- (Duan et al, 2016). The annual precipitation data are the average from six sites between Dongge cave and Heshang cave detailed in Hu et al (2008a), and the original monthly rainfall data are from http://www.wunderground.com/history/.…”

Section: Rainfall Reconstructionmentioning

confidence: 99%

“…Based on the 3 years of monthly monitored data of LF6 and HS4 (Duan et al, 2016), the sequences of annual moving average δ 18 O d of LF6 and HS4 have been calculated. Generally LF6 δ 18 O d values are higher than those of HS4, which is sensible since Heshang cave is further along the moisture transport pathway (Fig.…”

Section: Rainfall Reconstructionmentioning

confidence: 99%

“…The stalagmite δ 18 O data are calculated from DA δ 18 O from Dongge cave ) and HS4 δ 18 O from Heshang cave (Liu et al, 2013). The modern δ 18 O data are calculated from monthly monitored data from Liangfeng cave and Heshang cave (Duan et al, 2016). Stalagmite HS4 Mg / Ca data, Greenland ice core δ 18 O and δ 15 N data are derived from Liu et al (2013), Thomas et al (2007) and Kobashi et al ( 2007) respectively.…”

Section: Data Availabilitymentioning

confidence: 99%

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Quantification of southwest China rainfall during the 8.2 ka BP event with response to North Atlantic cooling

Yu-hui

2016

Clim. Past

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Abstract. The 8.2 ka BP event could provide important information for predicting abrupt climate change in the future. Although published records show that the East Asian monsoon area responded to the 8.2 ka BP event, there is no high-resolution quantitative reconstructed climate record in this area. In this study, a reconstructed 10-year moving average annual rainfall record in southwest China during the 8.2 ka BP event is presented by comparing two highresolution stalagmite δ 18 O records from Dongge cave and Heshang cave. This decade-scale rainfall reconstruction is based on a central-scale model and is confirmed by interannual monitoring records, which show a significant positive correlation between the regional mean annual rainfall and the drip water annual average δ 18 O difference from two caves along the same monsoon moisture transport pathway from May 2011 to April 2014. Similar trends between the reconstructed rainfall and the stalagmite Mg / Ca record, another proxy of rainfall, during the 8.2 ka BP period further increase the confidence of the quantification of the rainfall record. The reconstructed record shows that the mean annual rainfall in southwest China during the central 8.2 ka BP event is less than that of present by ∼ 200 mm and decreased by ∼ 350 mm in ∼ 70 years experiencing an extreme drying period lasting for ∼ 50 years. Comparison of the reconstructed rainfall record in southwest China with Greenland ice core δ 18 O and δ 15 N records suggests that the reduced rainfall in southwest China during the 8.2 ka BP period was coupled with Greenland cooling with a possible response rate of 110 ± 30 mm • C −1 .

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Interannual controls on oxygen isotope variability in Asian monsoon precipitation and implications for paleoclimate reconstructions

et al. 2016

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The transfer of seasonal isotopic variability between precipitation and drip water at eight caves in the monsoon regions of China

Cited by 100 publications

References 96 publications

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

Quantification of southwest China rainfall during the 8.2 ka BP event with response to North Atlantic cooling

Interannual controls on oxygen isotope variability in Asian monsoon precipitation and implications for paleoclimate reconstructions

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The transfer of seasonal isotopic variability between precipitation and drip water at eight caves in the monsoon regions of China

Cited by 100 publications

References 96 publications

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

Quantification of southwest China rainfall during the 8.2 ka BP event with response to North Atlantic cooling

Interannual controls on oxygen isotope variability in Asian monsoon precipitation and implications for paleoclimate reconstructions

Contact Info

Product

Resources

About

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

Quantification of southwest China rainfall during the 8.2 ka BP event with response to North Atlantic cooling