| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
Total organic carbon and total nitrogen concentration have been measured on the bottom sediments of the two long cores from Japan Sea at interval of 120 to 250 years over the last 600,000 years. Temporal changes of these proxies means temporal fluctuation of biological productivity in Japan Sea, which may be controlled by the climate, that is, latitude location of Polar front around Japan Sea. On the other words, total organic carbon concentrations of Japan Sea sediments can represent the global climate change, especially temporal fluctuation of Arctic ice sheet volume, for the middle to late Quaternary. This data can be an important paleoclimate proxy covering the last 600,000 years in the middle altitude region.
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