Low and high-center polygons

Low and high-center polygons
Low and high-center polygons

River freeze-up in the Arctic

Mean dates of river freeze-up in the Arctic
River freeze-up in the Arctic

Peat mound bog

Cross-section of a peat mound bog
Peat mound bog

Major pathways of contaminants into and within the Arctic environment

A multi-compartment schematic diagram of the major pathways of contaminants into and within the Arctic environment
Major pathways of contaminants into and within the Arctic environment

Contaminant emissions, transport and deposition in the Arctic

An illustration of the interplay between a) contaminant emissions distribution for sulfur dioxide and b) frequency of atmospheric south-to-north transport, yielding c) a net annual input of sulfur to [..]
Contaminant emissions, transport and deposition in the Arctic

Conceptual model of the terrestrial/freshwater compartment showing the main subcompartments and contaminant transfers, and exchanges with the atmosphere and oceans

Conceptual model of the terrestrial/freshwater compartment showing the main subcompartments and contaminant transfers, and exchanges with the atmosphere and oceans
Conceptual model of the terrestrial/freshwater compartment showing the main subcompartments and contaminant transfers, and exchanges with the atmosphere and oceans

Hydrographs showing two types of streamflow regimes for Arctic rivers: a) Arctic nival regime and b) proglacial regime

Hydrographs showing two types of streamflow regimes for Arctic rivers: a) Arctic nival regime and b) proglacial regime
Hydrographs showing two types of streamflow regimes for Arctic rivers: a) Arctic nival regime and b) proglacial regime

a) The annual (1973-1990) and mean annual hydrographs for the Mackenzie River above the Arctic Red River, NWT, Canada, indicating the dominance of the spring freshet in May

a) The annual (1973-1990) and mean annual hydrographs for the Mackenzie River above the Arctic Red River, NWT, Canada, indicating the dominance of the spring freshet in May
a) The annual (1973-1990) and mean annual hydrographs for the Mackenzie River above the Arctic Red River, NWT, Canada, indicating the dominance of the spring freshet in May

Monthly mean discharge expressed as a percent of annual discharge from available data for selected Russian and Canadian rivers draining to the Arctic

Monthly mean discharge expressed as a percent of annual discharge from available data for selected Russian and Canadian rivers draining to the Arctic
Monthly mean discharge expressed as a percent of annual discharge from available data for selected Russian and Canadian rivers draining to the Arctic

Comparison of monthly water and suspended sediment loads to the Mackenzie Delta plain for the period 1974-1983

Comparison of monthly water and suspended sediment loads to the Mackenzie Delta plain for the period 1974-1983
Comparison of monthly water and suspended sediment loads to the Mackenzie Delta plain for the period 1974-1983

Conceptual model of the coastal zone and marine environments showing the main subcompartments and contaminant transfers, and exchanges with the atmosphere

Conceptual model of the coastal zone and marine environments showing the main subcompartments and contaminant transfers, and exchanges with the atmosphere
Conceptual model of the coastal zone and marine environments showing the main subcompartments and contaminant transfers, and exchanges with the atmosphere

Illustration of the movement of less dense spring freshet water moving through a small Arctic lake underneath the surface ice cover, but not mixing with the water column

Illustration of the movement of less dense spring freshet water moving through a small Arctic lake underneath the surface ice cover, but not mixing with the water column
Illustration of the movement of less dense spring freshet water moving through a small Arctic lake underneath the surface ice cover, but not mixing with the water column

Monthly mean discharges for the Nelson River, Canada for the period 1960 to regulation in 1973, compared to post-regulation discharges from 1976 to 1990

Monthly mean discharges for the Nelson River, Canada for the period 1960 to regulation in 1973, compared to post-regulation discharges from 1976 to 1990
Monthly mean discharges for the Nelson River, Canada for the period 1960 to regulation in 1973, compared to post-regulation discharges from 1976 to 1990

Schematic representation of shelf processes involving transport of contaminants and sea ice

Schematic representation of shelf processes involving transport of contaminants and sea ice
Schematic representation of shelf processes involving transport of contaminants and sea ice

Transport of 90Sr, originating from Sellafield, along the coast of Norway The highest values are found in the Norwegian Coastal Current and decrease northward

Transport of 90Sr, originating from Sellafield, along the coast of Norway The highest values are found in the Norwegian Coastal Current and decrease northward
Transport of 90Sr, originating from Sellafield, along the coast of Norway The highest values are found in the Norwegian Coastal Current and decrease northward



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