Mercury Accumulation Rates and Spatial Patterns in Lake Sediments from West Greenland:  A Coast to Ice Margin Transect

2001 ◽  
Vol 35 (9) ◽  
pp. 1736-1741 ◽  
Author(s):  
Richard Bindler ◽  
Ingemar Renberg ◽  
Peter G. Appleby ◽  
N. John Anderson ◽  
Neil L. Rose
Keyword(s):  
Lake Sediments ◽  
Spatial Patterns ◽  
Mercury Accumulation ◽  
Accumulation Rates ◽  
West Greenland

Palaeolimnological investigation of atmospheric pollution in the Søndre Strømfjord region, southern West Greenland: accumulation rates and spatial patterns

2001 ◽  
pp. 48-53 ◽  
Author(s):  
Richard Bindler ◽  
N. John Anderson ◽  
Ingemar Renberg ◽  
Carola Malmquist
Keyword(s):  
Spatial Patterns ◽  
Atmospheric Pollution ◽  
Field Research ◽  
The Arctic ◽  
Accumulation Rates ◽  
Spatial And Temporal Patterns ◽  
Diverse Range ◽  
West Greenland ◽  
Anthropogenic Pollutants ◽  
Airborne Pollutants

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Bindler, R., Anderson, N. J., Renberg, I., & Malmquist, C. (2001). Palaeolimnological investigation of atmospheric pollution in the Søndre Strømfjord region, southern West Greenland: accumulation rates and spatial patterns. Geology of Greenland Survey Bulletin, 189, 48-53. https://doi.org/10.34194/ggub.v189.5154 _______________ High-latitude ecosystems are inherently sensitive to natural environmental stress as a result of extreme seasonal variations in light and temperature, nutrient limitations, as well as other physical and chemical characteristics; consequently, these regions are quite vulnerable to the addition of pollutant stress. There is a poor understanding of spatial and temporal patterns of atmospheric pollution in the Arctic, because of the lack of monitoring stations and networks for current and past atmospheric deposition. Today, however, the Arctic is recognised as an important focus for long-range transport of contaminants, particularly from strong air flows which carry airborne pollutants from industrial regions at lower latitudes, e.g. heavy metals and persistent organic pollutants (POPs). A diverse range of anthropogenic pollutants has been shown to be present across much of the region (Aarkrog et al. 1997; AMAP 1998). Of particular importance are compounds, such as mercury and POPs, which present a risk to native fauna and also inhabitants. It is hypothesised for some volatile organic compounds, as well as possibly for mercury, that there may be a latitudinal fractionation that contributes to the continued mobilisation of these compounds from warmer to colder climates, where they are ultimately deposited and stored (Wania & Mackay 1993). Experimental data and limited field research support this ‘cold-condensation’ hypothesis, at least for some POPs (Blais et al. 1998).

Pb isotope ratios of lake sediments in West Greenland: inferences on pollution sources

2001 ◽  
Vol 35 (27) ◽  
pp. 4675-4685 ◽  
Author(s):  
Richard Bindler ◽  
Ingemar Renberg ◽  
N. John Anderson ◽  
Peter G. Appleby ◽  
Ove Emteryd ◽  
...  
Keyword(s):  
Lake Sediments ◽  
Isotope Ratios ◽  
Pollution Sources ◽  
Pb Isotope ◽  
West Greenland

scholarly journals Quantifying supraglacial meltwater pathways in the Paakitsoq region, West Greenland

2017 ◽  
Vol 63 (239) ◽  
pp. 464-476 ◽  
Author(s):  
CONRAD KOZIOL ◽  
NEIL ARNOLD ◽  
ALLEN POPE ◽  
WILLIAM COLGAN
Keyword(s):  
Spatial Patterns ◽  
Surface Runoff ◽  
Significant Proportion ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Average Intensity ◽  
West Greenland ◽  
Surface Drainage ◽  
Subglacial Environment ◽  
Hydrology Model

ABSTRACTIncreased summer ice velocities on the Greenland ice sheet are driven by meltwater input to the subglacial environment. However, spatial patterns of surface input and partitioning of meltwater between different pathways to the base remain poorly understood. To further our understanding of surface drainage, we apply a supraglacial hydrology model to the Paakitsoq region, West Greenland for three contrasting melt seasons. During an average melt season, crevasses drain ~47% of surface runoff, lake hydrofracture drains ~3% during the hydrofracturing events themselves, while the subsequent surface-to-bed connections drain ~21% and moulins outside of lake basins drain ~15%. Lake hydrofracture forms the primary drainage pathway at higher elevations (above ~850 m) while crevasses drain a significant proportion of meltwater at lower elevations. During the two higher intensity melt seasons, model results show an increase (~5 and ~6% of total surface runoff) in the proportion of runoff drained above ~1300 m relative to the melt season of average intensity. The potential for interannual changes in meltwater partitioning could have implications for how the dynamics of the ice sheet respond to ongoing changes in meltwater production.

scholarly journals Diatom ooze—A large marine mercury sink

Science ◽  
2018 ◽  
Vol 361 (6404) ◽  
pp. 797-800 ◽  
Author(s):  
Sara Zaferani ◽  
Marta Pérez-Rodríguez ◽  
Harald Biester
Keyword(s):  
High Resolution ◽  
Southern Ocean ◽  
Marine Sediment ◽  
Crucial Role ◽  
Anthropogenic Pollution ◽  
Atmospheric Mercury ◽  
Mercury Accumulation ◽  
Accumulation Rates ◽  
Sediment Data

The role of algae for sequestration of atmospheric mercury in the ocean is largely unknown owing to a lack of marine sediment data. We used high-resolution cores from marine Antarctica to estimate Holocene global mercury accumulation in biogenic siliceous sediments (diatom ooze). Diatom ooze exhibits the highest mercury accumulation rates ever reported for the marine environment and provides a large sink of anthropogenic mercury, surpassing existing model estimates by as much as a factor of 7. Anthropogenic pollution of the Southern Ocean began ~150 years ago, and up to 20% of anthropogenic mercury emitted to the atmosphere may have been stored in diatom ooze. These findings reveal the crucial role of diatoms as a fast vector for mercury sequestration and diatom ooze as a large marine mercury sink.

Influence of catchment vegetation on mercury accumulation in lake sediments from a long-term perspective

2015 ◽  
Vol 538 ◽  
pp. 896-904 ◽  
Author(s):  
Johan Rydberg ◽  
Manfred Rösch ◽  
Emanuel Heinz ◽  
Harald Biester
Keyword(s):  
Lake Sediments ◽  
Mercury Accumulation

Atmospheric Mercury Accumulation Rates Between 5900 and 800 Calibrated Years BP in the High Arctic of Canada Recorded by Peat Hummocks

2004 ◽  
Vol 38 (19) ◽  
pp. 4964-4972 ◽  
Author(s):  
Nicolas Givelet ◽  
Fiona Roos-Barraclough ◽  
Michael E. Goodsite ◽  
Andriy K. Cheburkin ◽  
William Shotyk
Keyword(s):  
High Arctic ◽  
Atmospheric Mercury ◽  
Mercury Accumulation ◽  
Accumulation Rates
Sign in / Sign up

Export Citation Format

Share Document