Geovisualization of Mercury Contamination in Lake St. Clair Sediments
The Laurentian Great Lakes of North America contain approximately 20% of the earth’s fresh water. Smaller lakes, rivers and channels connect the lakes to the St. Lawrence Seaway, creating an interconnected freshwater and marine ecosystem. The largest delta system in the Great Lakes is located in the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-03-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | http://www.mdpi.com/2077-1312/4/1/19 |
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| author | K. Wayne Forsythe Chris H. Marvin Christine J. Valancius James P. Watt Joseph M. Aversa Stephen J. Swales Daniel J. Jakubek Richard R. Shaker |
| author_facet | K. Wayne Forsythe Chris H. Marvin Christine J. Valancius James P. Watt Joseph M. Aversa Stephen J. Swales Daniel J. Jakubek Richard R. Shaker |
| author_sort | K. Wayne Forsythe |
| collection | DOAJ |
| description | The Laurentian Great Lakes of North America contain approximately 20% of the earth’s fresh water. Smaller lakes, rivers and channels connect the lakes to the St. Lawrence Seaway, creating an interconnected freshwater and marine ecosystem. The largest delta system in the Great Lakes is located in the northeastern portion of Lake St. Clair. This article focuses on the geovisualization of total mercury pollution from sediment samples that were collected in 1970, 1974 and 2001. To assess contamination patterns, dot maps were created and compared with surfaces that were generated using the kriging spatial interpolation technique. Bathymetry data were utilized in geovisualization procedures to develop three-dimensional representations of the contaminant surfaces. Lake St. Clair generally has higher levels of contamination in deeper parts of the lake, in the dredged shipping route through the lake and in proximity to the main outflow channels through the St. Clair delta. Mercury pollution levels were well above the Probable Effect Level in large portions of the lake in both 1970 and 1974. Lower contaminant concentrations were observed in the 2001 data. Lake-wide spatial distributions are discernable using the kriging technique; however, they are much more apparent when they are geovisualized using bathymetry data. |
| first_indexed | 2024-12-16T14:37:25Z |
| format | Article |
| id | doaj.art-8a5882b4da50452bb9e9a6e57606316f |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-12-16T14:37:25Z |
| publishDate | 2016-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-8a5882b4da50452bb9e9a6e57606316f2022-12-21T22:28:03ZengMDPI AGJournal of Marine Science and Engineering2077-13122016-03-01411910.3390/jmse4010019jmse4010019Geovisualization of Mercury Contamination in Lake St. Clair SedimentsK. Wayne Forsythe0Chris H. Marvin1Christine J. Valancius2James P. Watt3Joseph M. Aversa4Stephen J. Swales5Daniel J. Jakubek6Richard R. Shaker7Department of Geography and Environmental Studies, Ryerson University, 350 Victoria Street, Toronto, ON M5B2K3, CanadaAquatic Ecosystem Management Research Branch, National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R4A6, CanadaDepartment of Geography and Environmental Studies, Ryerson University, 350 Victoria Street, Toronto, ON M5B2K3, CanadaCH2M Hill, 815 8th Avenue SW, Suite 1100, Calgary, AB T2P3P2, CanadaDepartment of Geography and Environmental Studies, Ryerson University, 350 Victoria Street, Toronto, ON M5B2K3, CanadaDepartment of Geography and Environmental Studies, Ryerson University, 350 Victoria Street, Toronto, ON M5B2K3, CanadaGeospatial Map and Data Centre, Ryerson University Library, 350 Victoria Street, Toronto, ON M5B2K3, CanadaDepartment of Geography and Environmental Studies, Ryerson University, 350 Victoria Street, Toronto, ON M5B2K3, CanadaThe Laurentian Great Lakes of North America contain approximately 20% of the earth’s fresh water. Smaller lakes, rivers and channels connect the lakes to the St. Lawrence Seaway, creating an interconnected freshwater and marine ecosystem. The largest delta system in the Great Lakes is located in the northeastern portion of Lake St. Clair. This article focuses on the geovisualization of total mercury pollution from sediment samples that were collected in 1970, 1974 and 2001. To assess contamination patterns, dot maps were created and compared with surfaces that were generated using the kriging spatial interpolation technique. Bathymetry data were utilized in geovisualization procedures to develop three-dimensional representations of the contaminant surfaces. Lake St. Clair generally has higher levels of contamination in deeper parts of the lake, in the dredged shipping route through the lake and in proximity to the main outflow channels through the St. Clair delta. Mercury pollution levels were well above the Probable Effect Level in large portions of the lake in both 1970 and 1974. Lower contaminant concentrations were observed in the 2001 data. Lake-wide spatial distributions are discernable using the kriging technique; however, they are much more apparent when they are geovisualized using bathymetry data.http://www.mdpi.com/2077-1312/4/1/19mercurycontaminationsedimentkrigingbathymetrygeovisualizationLake St. Clair |
| spellingShingle | K. Wayne Forsythe Chris H. Marvin Christine J. Valancius James P. Watt Joseph M. Aversa Stephen J. Swales Daniel J. Jakubek Richard R. Shaker Geovisualization of Mercury Contamination in Lake St. Clair Sediments Journal of Marine Science and Engineering mercury contamination sediment kriging bathymetry geovisualization Lake St. Clair |
| title | Geovisualization of Mercury Contamination in Lake St. Clair Sediments |
| title_full | Geovisualization of Mercury Contamination in Lake St. Clair Sediments |
| title_fullStr | Geovisualization of Mercury Contamination in Lake St. Clair Sediments |
| title_full_unstemmed | Geovisualization of Mercury Contamination in Lake St. Clair Sediments |
| title_short | Geovisualization of Mercury Contamination in Lake St. Clair Sediments |
| title_sort | geovisualization of mercury contamination in lake st clair sediments |
| topic | mercury contamination sediment kriging bathymetry geovisualization Lake St. Clair |
| url | http://www.mdpi.com/2077-1312/4/1/19 |
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