| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
|
|---|
| Outline of Final Research Achievements |
Through the observation and modeling of nutrient dynamics, particularly related to phosphorus, in the surface sediments of Lake Kasumigaura (representative of polymictic lakes), we elucidated the physicochemical characteristics of water/sediment environment and the depth and chemical properties corresponding to the nutrient release. Based on the long-term experiments (around 6 months) during fall and summer periods, the effectiveness of granulated coal ash on nutrient suppression from anoxic sediments, i.e., its applicability to freshwater lakes, was confirmed and the suppression mechanism was clarified. The yearly changes in the vertical profiles of radioactive cesium derived from the Fukushima Dai-ichi Nuclear Power Plant accident in the surface sediments of five lakes were monitored and simulated with sediment advection-diffusion model.
|
