The assessment of 210Pb data from sites with varying sediment accumulation rates

Appleby, P. G.; Oldfield, Frank

doi:10.1007/978-94-009-7290-2_5

Cited by 182 publications

(131 citation statements)

References 13 publications

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“…The constant rate of supply model (CRS) is employed for the dating of sediment characterized by variations of initial concentrations (Appleby and Oldfield 1978;Appleby and Oldfield 1983). It is therefore useful in study sites with irregular inundation, where accretion rates strongly vary with time.…”

Section: Dating Modelmentioning

confidence: 99%

Salt Marsh Accretion and Storm Tide Variation: an Example from a Barrier Island in the North Sea

Schuerch¹,

Rapaglia²,

Liebetrau

et al. 2011

Estuaries and Coasts

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We reconstruct past accretion rates of a salt marsh on the island of Sylt, Germany, using measurements of the radioisotopes 210 Pb and 137 Cs, as well as historical aerial photographs. Results from three cores indicate accretion rates varying between 1 and 16 mm year −1 .Comparisons with tide gauge data show that high accretion rates during the 1980s and 1990s coincide with periods of increased storm activity. We identify a critical inundation height of 18 cm below which the strength of a storm seems to positively influence salt marsh accretion rates and above which the frequency of storms becomes the major factor. In addition to sea level rise, we conclude that in low marsh zones subject to higher inundation levels, mean storm strength is the major factor affecting marsh accretion, whereas in high marsh zones with lower inundation levels, it is storm frequency that impacts marsh accretion.

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Section: Dating Modelmentioning

confidence: 99%

Salt Marsh Accretion and Storm Tide Variation: an Example from a Barrier Island in the North Sea

Schuerch¹,

Rapaglia²,

Liebetrau

et al. 2011

Estuaries and Coasts

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“…The supported 210 Pb was determined by the alpha activity of the supporting parent, 226 Ra, via the co-precipitation of BaSO 4 . In this study, the constant flux/constant sedimentation rate (CF/CS) model was adopted to calculate the rate of sedimentation (Appleby and Oldfield, 1983). …”

Section: Pb Isotopic Analysesmentioning

confidence: 99%

The spatial and temporal distribution of heavy metals in sediments of Victoria Harbour, Hong Kong

Tang

Zhang

et al. 2008

Marine Pollution Bulletin

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Victoria Harbour has received substantial loadings of pollutants from industrial and municipal wastewater discharged since the 1950s. Inputs of contaminants have declined dramatically during the last two decades as a result of better controls at the source and improved wastewater treatment facilities. To assess the spatial and temporal changes of metal contaminants in sediments in Victoria Harbour, core and grab sediments were collected. The central harbour areas were generally contaminated with heavy metals. The spatial distribution of trace metals can probably be attributed to the proximity of major urban and industrial discharge points, and to the effect of tidal flushing in the harbour. In the sediment cores, the highest concentrations of trace metals were observed to have accumulated during the 1950s to 1980s, corresponding with the

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“…This is usually done by reference to independent records of artificial fallout radionuclides such as 137 Cs (Pennington et al, 1973) and 241 Am (Appleby et al, 1991) from the atmospheric testing of nuclear weapons or the 1986 Chernobyl reactor accident. A number of techniques for assessing 210 Pb data and calculating a best chronology are given in the literature (e.g., Appleby & Oldfield, 1983;Oldfield & Appleby, 1984;Appleby, 2001). One of the key aspects of the 210 Pb dating methodology is an assessment of the dominant processes by which fallout is delivered to the core site.…”

Section: Introductionmentioning

confidence: 99%

Radiometric dating of sediment records from mountain lakes in the Tatra Mountains

Appleby

Piliposian

2006

Biologia

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Sediment cores from nine different lakes in the Tatra Mountains, collected as part of the EU funded AL:PE, MOLAR and EMERGE projects investigating natural environmental records stored in remote mountain lake sediment sequences, were dated radiometrically by 210 Pb and 137 Cs. At five sites, D lugi Staw Gasienicowy and Zielony Staw Gasienicowy on the Polish side of the Tatra Mountains and Starolesnianske pleso, Nižné Terianske pleso, and Ľadové pleso on the Slovak side of the Tatra Mountains, the cores were sectioned at close intervals and analysed in detail to produce a high resolution chronology. For the remaining four sites, Zmarzly Staw Gasienicowy (Poland), and Veľké Hincovo pleso, Vyšné Temnosmrečinské pleso, Vyšné Wahlenbergovo pleso (Slovakia), it was sufficient to establish a low resolution sketch chronology and only a few samples were analysed from each core. At Ľadové pleso, multiple cores were collected in order to establish spatial distribution of sediments over the bed of the lake. Cores from all sites had good records of the fallout radionuclides from which it was possible to construct reliable chronologies of the recent sediments.

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The assessment of 210Pb data from sites with varying sediment accumulation rates

Cited by 182 publications

References 13 publications

Salt Marsh Accretion and Storm Tide Variation: an Example from a Barrier Island in the North Sea

Salt Marsh Accretion and Storm Tide Variation: an Example from a Barrier Island in the North Sea

The spatial and temporal distribution of heavy metals in sediments of Victoria Harbour, Hong Kong

Radiometric dating of sediment records from mountain lakes in the Tatra Mountains

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