| Autor: | David W. Dyrssen |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
chemistry.chemical_classification
geography geography.geographical_feature_category Sulfide Alkalinity Fjord Anoxic waters Bottom water chemistry.chemical_compound Geophysics Oceanography chemistry Geochemistry and Petrology Environmental chemistry Dissolved organic carbon Carbonate Organic matter Geology |
| Zdroj: | Aquatic Geochemistry. 5:59-73 |
| ISSN: | 1380-6165 |
| DOI: | 10.1023/a:1009663704604 |
| Popis: | The following determinations in the Norwegian fjord Framvaren and the Black Sea have been compared: carbon-14, carbon-13, alkalinity, total dissolved inorganic carbon, sulfide, tritium (HTO), trace metals, silica, ammonium and phosphate. The historical development of the two anoxic basins is quite different. The carbon-14 age of the total inorganic dissolved carbonate in the deep water is 2000 years in the Black Sea, but only 1600 in Framvaren. The fresh water supply and composition are different. The rivers entering the Black Sea have a high alkalinity, but the river input and runoff to Framvaren has a very low alkalinity. The alkalinity, carbonate and sulfide concentrations in the anoxic waters below the chemoclines are much higher in Framvaren. This is mainly an effect of the different surface to volume ratios. The difference in carbon-13 (-8‰ for the Black Sea deep water, -19‰ in the Framvaren bottom water) is mainly due to the smaller imprint of the decomposition of organic matter on the Black Sea deep water. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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