Isotopic Analysis and Cycling of Dissolved Inorganic Carbon at Lake Biwa, Central Japan
| Autor: | Yoshihiko Mizutani, Sadao Kojima, Hirotaka Oda, Tomoko Ohta, Mitsuru Okuno, Wolfgang Kretschmer, Toshio Nakamura, Ki Ichiro Yokota, Akiko Ikeda |
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| Rok vydání: | 1997 |
| Předmět: |
Delta
Hydrology 010506 paleontology Archeology 060102 archaeology Stable isotope ratio Limnology chemistry.chemical_element 06 humanities and the arts 01 natural sciences Atmosphere chemistry.chemical_compound chemistry Environmental chemistry Carbon dioxide Dissolved organic carbon General Earth and Planetary Sciences 0601 history and archaeology Carbon Geology 0105 earth and related environmental sciences Isotope analysis |
| Zdroj: | Radiocarbon. 40:933-944 |
| ISSN: | 1945-5755 0033-8222 |
| Popis: | This paper reports on concentrations and carbon isotopic results of dissolved inorganic carbon (DIC) in water samples collected at four locations and from several depths in Lake Biwa, central Japan, covering every season of the year, starting in the spring of 1995. Depth profiles of DIC concentration and DIC δ13C showed a strong seasonal pattern, as a result of vertical mixing of the lake water in winter and early spring, or lack of mixing in the other seasons. No seasonal change in DIC ∆14C depth profiles was recognizable, mainly owing to the wide scatter of DIC ∆14C. Values typically ranged from 0.47 to 0.65 mmol kg-1 for DIC concentration, and from -4 to -8‰ and from +10 to +80‰ for DIC ∆13C and DIC ∆14C, respectively, for the Lake Biwa water. |
| Databáze: | OpenAIRE |
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