| Budget Amount *help |
¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2011: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2009: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Research Abstract |
We established an international ocean observation network in the Australian-Antarctic Basin, Southern Ocean, with implementing stable oxygen isotope measurements as the standard method and compared the results with the previous hydrographic observations. Freshening tendency of the Antarctic Bottom Water in this basin was estimated. Analysis revealed that the major cause of this freshening is the freshening of the bottom water, flowing into this basin from the east, and its reduction of the flow rate. With this observation network, the baseline structure of stable oxygen isotope was constructed to infer causes of future oceanic change.
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