| 南极海冰和陆架冰的变化特征 |
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| 引用本文： | 解思梅,魏立新,郝春江,张海英,梅山.南极海冰和陆架冰的变化特征[J].海洋学报,2003,25(3):32-46. |
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| 作者姓名： | 解思梅 魏立新 郝春江 张海英 梅山 |
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| 作者单位： | 国家海洋环境预报中心, 北京, 100081 |
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| 基金项目： | 国家科技部社会公益研究专项基金资助项目(2001DIA5040-03-02)，国家自然科学基金资助项目(49776280) |
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| 摘 要： | 利用美国冰中心和雪冰中心提供的海冰资料和我国南极考察现场的海冰观测资料,对南极海冰的长期变化进行了研究.研究表明20世纪70年代后期是多冰期;80年代是少冰期;90年代南极海冰属于上升趋势,后期偏多,区域性变化差别大,东南极海冰偏多,西南极海冰即南极半岛两侧尤其是威德尔海区和别林斯高晋海的冰明显偏少.东南极和西南极海冰的变化趋势总是反相的.90年代后期普里兹湾的海冰明显偏多,南极大陆陆架冰外缘线总体没有明显的收缩,有崩解也有再生的自然变化现象.西南极威德尔海的龙尼冰架和罗斯海冰架东部崩解和收缩趋势明显,东南极的冰架也有崩解和收缩,但没有西南极明显.陆架冰崩解向海洋输送的冰山对全球海平面升高有一定的影响.目前南极冰盖断裂崩解形成的冰山,向海洋输入的水量可使全球海平面上升约14mm.南极海冰没有随着全球气候温暖化而明显减少,而是按照东南极和西南极反相的变化规律进行周期性的变化、调整和制约.
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| 关 键 词： | 南极海冰 南极陆架冰 变化特征 近期变化动态 |
| 文章编号： | 0253-4193(2003)03-0032-15 |
| 收稿时间： | 2001/12/6 0:00:00 |
| 修稿时间： | 2001年12月6日 |
Change variation of the Antarctic sea ice and shelf ice |
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| XIE Si-mei,WEI Li-xin,HAO Chun-Jiang,ZhANG Hai-ying and MEI Shan.Change variation of the Antarctic sea ice and shelf ice[J].Acta Oceanologica Sinica (in Chinese),2003,25(3):32-46. |
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| Authors: | XIE Si-mei WEI Li-xin HAO Chun-Jiang ZhANG Hai-ying and MEI Shan |
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| Affiliation: | National Research Center for Marine Environment Forecasts, Beijing 100081, China |
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| Abstract: | Sea ice data provided by Ice and Snow Center, USA and field observed sea ice data with assimilation processed are used to study the dynamic change and long-term change trend of the Antarctic sea ice. The study shows that, there was more ice period in the later stage of the 1970s, less ice period in the 1980s. While in the 1990s, the Antarctic sea ice was in raising trend, and more ice in later stage. Regional variation difference was very large with more ice in the eastern Antarctic, obviously less ice in the west Antarctic, both sides of the Antarctic Peninsula, especially in the Weddell Sea and the Bellingshausen Sea. The sea ice variation trend in the eastern and western Antarctic is always in opposite phase. In the later 1990s, sea ice in the Prydz Bay was obviously more. The outer periphery line of sea ice of the Antarctic Continent shelf, on the wholle, wasn't any evident retreat, it was in natural variation trend with collapse and also renascence. While in the western Antarctic, the Ronne ice shelf of the Weddell Sea and the eastern part of Ross Sea ice shelf, collapse and retreat trend was evident. The collapse and retreat of ice shelf in the eastern Antarctic also existed, but not as evident as in the western Antarctic. Iceberg transferred from shelf ice collapse to ocean gives a certain impact on global sea level raising. In a word, the Antarctic sea ice had not obviously decreased with global climate warming, but periodically changes, adjusts and restricts according to opposite phase variation rule in the eastern and western Antarctic. |
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| Keywords: | Antarctic sea ice variation trend periodical variation |
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