| Project/Area Number |
24510001
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MITSUDERA Humio 北海道大学, 低温科学研究所, 教授 (20360943)
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| Research Collaborator |
MEYLAN Mike ニューキャッスル大学(豪), 理学部, 講師
KOHOUT Alison 水文大気科学国立研究所(NZ), 研究員
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 極地 / 海氷 / 波ー海氷相互作用 / 氷盤の大きさ分布 / 気候変動 / 波―海氷相互作用 |
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| Outline of Final Research Achievements |
To improve the understanding of wave-ice interaction and subsequent effects on floe size distribution (FSD) in the marginal ice zone (MIZ), the concurrent measurement of wave activity and floe size distribution was conducted off East Antarctica in late winter 2012. While logistic reasons limited helicopter operation to two interior ice regions, the floe size distribution in the interior region was determined using a combination of heli-photos and MODIS satellite visible images. Our analysis shows: 1) the interior region already possesses two kinds of floe size distributions for both d < 100 m and d > 1 km scales, which exist in the MIZ, however, for a small regime an expected regime shift is absent; 2) the significantly high waves can penetrate into the interior region and affect the FSD there. These results indicate that one role of wave-ice interaction in MIZ is to modulate the floe size distribution that already exists in the interior region, rather than directly create it.
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