210Pb dating by low background gamma counting

Appleby, P. G.; Nolan, P. J.; Gifford, D. W.; Godfrey, M. J.; Oldfield, Frank; Anderson, N. J.; Battarbee, R. W.

doi:10.1007/978-94-009-4047-5_4

Cited by 270 publications

(207 citation statements)

References 9 publications

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“…Each sample was packed in a 15 mm polyethylene tube and stored for 3 weeks in sealed containers to allow radioactive equilibration, was counted for 48 h. 210 Pb was determined via its energy emission at 46.5 keV. 226 Cs records using the CRS model 49 . Pollen samples of 0.3 6 0.05 g at 1 cm intervals with average resolution of 20-yr from the same split cores were used.…”

Section: Methodsmentioning

confidence: 99%

500-year climate cycles stacking of recent centennial warming documented in an East Asian pollen record

Lü

Chu

et al. 2016

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

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Here we presented a high-resolution 5350-year pollen record from a maar annually laminated lake in East Asia (EA). Pollen record reflected the dynamics of vertical vegetation zones and temperature change. Spectral analysis on pollen percentages/concentrations of Pinus and Quercus, and a temperature proxy, revealed ,500-year quasi-periodic cold-warm fluctuations during the past 5350 years. This ,500-year cyclic climate change occurred in EA during the mid-late Holocene and even the last 150 years dominated by anthropogenic forcing. It was almost in phase with a ,500-year periodic change in solar activity and Greenland temperature change, suggesting that ,500-year small variations in solar output played a prominent role in the mid-late Holocene climate dynamics in EA, linked to high latitude climate system. Its last warm phase might terminate in the next several decades to enter another ,250-year cool phase, and thus this future centennial cyclic temperature minimum could partially slow down man-made global warming.

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Section: Methodsmentioning

confidence: 99%

500-year climate cycles stacking of recent centennial warming documented in an East Asian pollen record

Lü

Chu

et al. 2016

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

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“…Dried sediments (2.4e3.0 g) were stored in sealed containers for 3 weeks to allow radioactive equilibration and then dated radiometrically by analysing for 210 Pb and 226 Ra by direct gamma assay using a GWL-120210-S well-type, coaxial, low background, intrinsic germanium detectors fitted with NaI(Tl) escape suppression shields (Appleby et al, 1986). Sedimentation rates were calculated using a 210 Pb constant rate of supply (CRS) model and 137 Cs as a time marker.…”

Section: Gaseous Carbon Exchange and Carbon Burial Balancementioning

confidence: 99%

Carbon source/sink function of a subtropical, eutrophic lake determined from an overall mass balance and a gas exchange and carbon burial balance

Yang

Xing

Xie

et al. 2008

Environmental Pollution

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“…210 Pb was determined via its gamma emissions at 46.5 keV following storage for three weeks in sealed containers to allow radioactive equilibration. 137 Cs and 241 Am were measured by their emissions at 662 keV and 59.5 keV (Appleby et al, 1986). Corrections were made for the effect of selfabsorption of low energy gamma rays within the sample (Appleby et al, 1992), with the absolute efficiencies of the detector determined using calibrated sources and sediment samples of known activity.…”

Section: Age Modelsmentioning

confidence: 99%

Lake Baikal isotope records of Holocene Central Asian precipitation

Swann

Mackay²,

Вологина

et al. 2018

Quaternary Science Reviews

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Climate models currently provide conflicting predictions of future climate change across Central Asia. With concern over the potential for a change in water availability to impact communities and ecosystems across the region, an understanding of historical trends in precipitation is required to aid model development and assess the vulnerability of the region to future changes in the hydroclimate. Here we present a record from Lake Baikal, located in the southern Siberian region of central Asia close to the Mongolian border, which demonstrates a relationship between the oxygen isotope composition of diatom silica (δ 18 Odiatom) and precipitation to the region over the 20 th and 21 st Century. From this, we suggest that annual rates of precipitation in recent times are at their lowest for the past 10,000 years and identify significant long-term variations in precipitation throughout the early to late Holocene interval. Based on comparisons to other regional records, these trends are suggested to reflect conditions across the wider Central Asian region around Lake Baikal and highlight the potential for further changes in precipitation with future climate change.

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210Pb dating by low background gamma counting

Cited by 270 publications

References 9 publications

500-year climate cycles stacking of recent centennial warming documented in an East Asian pollen record

500-year climate cycles stacking of recent centennial warming documented in an East Asian pollen record

Carbon source/sink function of a subtropical, eutrophic lake determined from an overall mass balance and a gas exchange and carbon burial balance

Lake Baikal isotope records of Holocene Central Asian precipitation

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