| Co-Investigator(Kenkyū-buntansha) |
関 宰 北海道大学, 低温科学研究所, 准教授 (30374648)
板木 拓也 国立研究開発法人産業技術総合研究所, 地質調査総合センター, 研究グループ長 (30509724)
佐藤 暢 専修大学, 経営学部, 教授 (50365847)
井尻 暁 神戸大学, 海事科学研究科, 准教授 (70374212)
|
|---|
| Budget Amount *help |
¥155,870,000 (Direct Cost: ¥119,900,000、Indirect Cost: ¥35,970,000)
Fiscal Year 2021: ¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000)
Fiscal Year 2020: ¥22,750,000 (Direct Cost: ¥17,500,000、Indirect Cost: ¥5,250,000)
Fiscal Year 2019: ¥25,480,000 (Direct Cost: ¥19,600,000、Indirect Cost: ¥5,880,000)
Fiscal Year 2018: ¥28,080,000 (Direct Cost: ¥21,600,000、Indirect Cost: ¥6,480,000)
Fiscal Year 2017: ¥57,720,000 (Direct Cost: ¥44,400,000、Indirect Cost: ¥13,320,000)
|
|---|
| Outline of Final Research Achievements |
The development of a purified method for diatom shells and its oxygen isotope analysis, and the establishment of an automated radiolarian analysis technique using AI deep learning, have successfully brought new developments to paleoceanographic studies in the Southern Ocean. The validity of precise age contrast between marine sediment cores and Antarctic ice cores using dust indices was examined, and it was clarified that local biases such as regional nature of dust variability and contamination of volcaniclastic debris should be fully taken into account in the Indian sector in the Southern Ocean. We reconstructed surface and sub-surface seawater temperature variations in the Indian sector of the Southern Ocean over a wide area, and found that short-term variations are linked to the Southern Annular Mode (SAM), and that marine isotope stages 5e and 9 have significantly higher surface water temperatures than other interglacial stages.
|
