Variability in Arctic sea ice drift

Variability in Arctic sea ice drift
复制标题

北极海冰漂移的变化

DOI:
--
复制
发表时间:
2004
期刊:
影响因子:
--
通讯作者:
I. Rigor
I. Rigor
中科院分区:
--
文献类型:
--
作者:
S. Pfirman;W. Haxby;R. Colony;I. Rigor

文献摘要

被引文献

相似文献

使用拉格朗日观点对1979-1997年北极海冰漂移进行的分析显示了冰漂移对大气条件变化响应的复杂性。冰动力学的变化会影响冰的重新分布,以及来自不同来源地区的任何运输物质。输出到弗拉姆海峡的冰源在1986/87年左右从喀拉海和塞维亚岛的优势转移到新西伯利亚群岛、东西伯利亚海和楚科奇海。多年冰的平均旅行时间在北极盆地中部的常年包,在1987/88年达到最大值,并减少了至少1年之间的1984-1989年和1990-1997年。与其他研究人员的观察结果一致,这种冰旅行时间的减少发生在1988年至1990年从博福特环流向弗拉姆海峡的旧冰的主要出口或“激增”之后,这减少了中央盆地内厚的脊状冰的比例。
Analysis of Arctic sea ice drift from 1979–1997 using a Lagrangian perspective shows the complexities of ice drift response to variations in atmospheric conditions. Changes in ice dynamics influence the redistribution of ice, and any transported material, from different source areas. Sources of ice exported to Fram Strait shifted in about 1986/87 from dominance of the Kara Sea and Severnaya Zemlya to the New Siberian Islands, East Siberian Sea, and Chukchi Sea. Average travel time of multiyear ice within the perennial pack of the central Arctic Basin, reached a maximum in 1987/88, and decreased by at least 1 year between 1984–1989 and 1990–1997. Consistent with the observations of other investigators, this decrease in ice travel time occurred following a major export or “surge” of old ice to Fram Strait from the Beaufort Gyre in 1988 through 1990, which decreased the fraction of thick, ridged ice within the central basin.