Spatial patterns and temporal trends in mercury concentrations, precipitation depths, and mercury wet deposition in the North American Great Lakes region, 2002-2008
Environmental Pollution
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Abstract
Annual and weekly mercury (Hg) concentrations, precipitation depths, and Hg wet deposition in the Great Lakes region were analyzed by using data from 5 monitoring networks in the USA and Canada for a 2002-2008 study period. High-resolution maps of calculated annual data, 7-year mean data, and net interannual change for the study period were prepared to assess spatial patterns. Areas with 7-year mean annual Hg concentrations higher than the 12 ng per liter water-quality criterion were mapped in 4 states. Temporal trends in measured weekly data were determined statistically. Monitoring sites with significant 7-year trends in weekly Hg wet deposition were spatially separated and were not sites with trends in weekly Hg concentration. During 2002-2008, Hg wet deposition was found to be unchanged in the Great Lakes region and its subregions. Any small decreases in Hg concentration apparently were offset by increases in precipitation.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Spatial patterns and temporal trends in mercury concentrations, precipitation depths, and mercury wet deposition in the North American Great Lakes region, 2002-2008 |
| Series title | Environmental Pollution |
| DOI | 10.1016/j.envpol.2011.05.030 |
| Volume | 161 |
| Year Published | 2012 |
| Language | English |
| Publisher | Elsevier |
| Publisher location | Amsterdam, Netherlands |
| Contributing office(s) | Indiana Water Science Center |
| Description | 11 p. |
| First page | 261 |
| Last page | 271 |
| Time Range Start | 2002-01-01 |
| Time Range End | 2008-12-31 |
| Country | United States |
| Other Geospatial | Great Lakes Region |
| Google Analytic Metrics | Metrics page |