Calibration of the speleothem delta function: an absolute temperature record                 for the Holocene in northern Norway

Lauritzen, Stein‐Erik; Lundberg, Joyce

doi:10.1191/095968399667823929

Cited by 187 publications

(143 citation statements)

References 21 publications

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“…Millennial-scale oscillations have the lowest 8 18 0 amplitude (0.2 0.50/00), whereas decadal oscillations have large amplitudes (1 20/00). Such amplitudes are similar to other records from Western Europe during late Holocene time (Lauritzen and Lundberg, 1999b;Linge et aI., 2001;McDermott et aI., 1999McDermott et aI., , 2001Niggemann et aI., 2003b;Frisia et al, 2006), but not in records from monsoonal Decay constant values adopted from Cheng et al (2000). The errors are always 2a errors.…”

Section: Composition Variability and Spectral Analysissupporting

confidence: 69%

“…On short time scales (i.e., decadal), the fluctuations of these records, however, have smaller amplitudes, ranging from 0.5%0 to 1%0 (e.g., Dykoski et aI., 2005). Another oscillation mode is represented by speleothem profiles from locations influenced by the Polar Front, which do not record significant variations during much of the Holocene (Lauritzen and Lundberg, 1999b;McDermott et aI., 2001). The only trend observed in these records is restricted to their early Holocene portions.…”

Section: Introductionmentioning

confidence: 99%

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Α high-resolution late Holocene speleothem record from Kaite Cave, northern Spain: δ18O variability and possible causes

Domínguez‐Villar

Wang

Cheng

et al. 2008

Quaternary International

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A high-resolution calcite oxygen stable isotopic (0 18 0) record, covering the past 4000 years, was obtained from Kaite Cave, northern Spain. The record has a mean 0 18 0 value of -6.25%0 VPDB and a range of 2%0. Spectral analysis of the 0 18 0 data shows significant periodicities of 2400-1900,600, 150,27, and 22 years. The amplitudes during these periods range from 0.2%0 to 2%0. Factors controlling the isotopic ratio in the speleothem were evaluated. The calcite is most likely precipitated under equilibrium conditions, with the cave calcite 0 18 0 interpreted as a proxy of oxygen isotopic composition in local rainwater. Other factors such as temperature or fractionation in the karst system prior to calcite precipitation are considered of negligible or of minor importance. Mechanisms affecting rainfall isotopic composition were also investigated on different time scales. Precipitation amount is the primary factor controlling the high frequency 0 18 0 oscillations. Other climate parameters, such as changes of storm tracks may have significant contributions on centennial and millennial time scales.

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Section: Composition Variability and Spectral Analysissupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Α high-resolution late Holocene speleothem record from Kaite Cave, northern Spain: δ18O variability and possible causes

Domínguez‐Villar

Wang

Cheng

et al. 2008

Quaternary International

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“…These and other studies also indicate that the early Holocene warming was gradual (Karl! en, 1998;Lauritzen and Lundberg, 1999;Sepp. a and Birks, 2001).…”

Section: Northern Europementioning

confidence: 99%

The temperature of Europe during the Holocene reconstructed from pollen data

Davis

Brewer

Stevenson

et al. 2003

Quaternary Science Reviews

909

684

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“…O in atmospheric moisture (and hence also in speleothems) to temperature in the longer term, a particularly elegant example being that of Lauritzen and Lundberg (1999), a pattern also followed by Mangini et al (2005). Secondly, the nature and relative importance of complicating processes in the karst and cave system had been insufficiently researched.…”

mentioning

confidence: 99%

Modification and preservation of environmental signals in speleothems

Fairchild

Smith

Baker

et al. 2006

Earth-Science Reviews

729

506

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Speleothems are primarily studied in order to generate archives of climatic change and results have led to significant advances in identifying and dating major shifts in the climate system. However, the climatological meaning of many speleothem records cannot be interpreted unequivocally; this is particularly so for more subtle shifts and shorter time periods, but the use of multiple proxies and improving understanding of formation mechanisms offers a clear way forward.An explicit description of speleothem records as time series draws attention to the nature and importance of the signal filtering processes by which the weather, the seasons and longer-term climatic and other environmental fluctuations become encoded in speleothems. We distinguish five sources of variation that influence speleothem geochemistry: atmospheric, vegetation/soil, karstic aquifer, primary speleothem crystal growth and secondary alteration and give specific examples of their influence. The direct role of climate diminishes progressively through these five factors.We identify and review a number of processes identified in recent and current work that bear significantly on the conventional interpretation of speleothem records, for example: 1) speleothem geochemistry can vary seasonally and hence a research need is to establish the proportion of growth attributable to different seasons and whether this varies over time.2) whereas there has traditionally been a focus on monthly mean δ 18 O data of atmospheric moisture, current work emphasizes the importance of understanding the synoptic processes that lead to characteristic isotope signals, since changing relative abundance of different weather types might 1 Corresponding author, fax +44(0)1214145528, E-mail: i.j.fairchild@bham.ac.uk control their variation on the longer-term. 3) the ecosystem and soil zone overlying the cave fundamentally imprint the carbon and trace element signals and can show characteristic variations with time. 4) new modelling on aquifer plumbing allows quantification of the effects of aquifer mixing. 5) recent work has emphasized the importance and seasonal variability of CO 2 -degassing leading to calcite precipitation upflow of a depositional site on carbon isotope and trace element composition of speleothems. 6) Although much is known about the chemical partitioning between water and stalagmites, variability in relation to crystal growth mechanisms and kinetics is a research frontier. 7) Aragonite is susceptible to conversion to calcite with major loss of chemical information, but the controls on the rate of this process are obscure.Analytical factors are critical to generate high-resolution speleothem records. A variety of methods of trace element analysis are available, but standardization is a common problem with the most rapid methods. New stable isotope data on Irish stalagmite CC3 compares rapid laser-ablation techniques with the conventional analysis of micromilled powders and ion microprobe methods. A high degree of comparability between techniques ...

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Calibration of the speleothem delta function: an absolute temperature record for the Holocene in northern Norway

Cited by 187 publications

References 21 publications

Α high-resolution late Holocene speleothem record from Kaite Cave, northern Spain: δ18O variability and possible causes

Α high-resolution late Holocene speleothem record from Kaite Cave, northern Spain: δ18O variability and possible causes

The temperature of Europe during the Holocene reconstructed from pollen data

Modification and preservation of environmental signals in speleothems

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