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中山 雅茂
ナカヤマ マサシゲ NAKAYAMA Masashige 所 属 釧路校 職 名 准教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2006/01 |
| 形態種別 | 学術雑誌 |
| 査読 | 査読あり |
| 標題 | Characteristics of sea ice floe size distribution in the seasonal ice zone |
| 執筆形態 | 共著 |
| 掲載誌名 | Geophysical Research Letters |
| 掲載区分 | 国外 |
| 出版社・発行元 | AGU |
| 巻・号・頁 | 33(L02616),pp.1-4 |
| 担当範囲 | Image processing |
| 著者・共著者 | Takenobu Toyota, Shinya Takatsuji, and Masashige Nakayama |
| 概要 | The size distribution of sea ice floes was observed by coordinated Landsat imagery and video monitoring conducted from an icebreaker and a helicopter for an area 38 km x 26 km in seasonal sea ice in the southern Sea of Okhotsk in February 2003. The combination of imagery on several scales allowed measurements of ice floes over three orders of magnitude, from 1 m to 1.5 km. Two different regimes were observed: floes larger than about 40 m have a power-law number density with an exponent of 1.87, in the lower range of earlier results. Below 40 m, the power law exponent is 1.15. The cause of these two different regimes is hypothesized to lie in the effects of swell on floes of different sizes and thicknesses. The importance of the floe size distribution for lateral melting is elucidated. |
| DOI | https://doi.org/10.1029/2005GL024556 |
| researchmap用URL | https://doi.org/10.1029/2005GL024556 |