| Budget Amount *help |
¥24,700,000 (Direct Cost: ¥19,000,000、Indirect Cost: ¥5,700,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
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| Outline of Final Research Achievements |
Geochemical tracers such as Sr/Ca, U/Ca, oxygen and carbon isotope ratios were measured on annual bands of the coral skeleton collected from Java Sea in order to reconstruct marine environments for the past 70 years. As a result, 0.7 degree C warming was found for this time period. Especially impact from emission of fossil fuels seems to be intensified since 1970s as seen in the record of carbon isotope ratios as well as U/Ca ratios. Based on the variation of Sr/Ca and U/Ca ratios for 70 years, seawater pH would be decreased since 1970s probably due to the anthropogenic CO2 emission.
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