Seasonal variation in velocity before retreat of Jakobshavn Isbræ, Greenland
Seasonal variation in velocity before retreat of Jakobshavn Isbræ, Greenland
复制标题
格陵兰岛雅各布港伊斯布雷撤退前速度的季节变化
DOI：
10.1029/2005gl022519
复制
发表时间：
2005
影响因子：
5.2
通讯作者：
T. Murray
中科院分区：
文献类型：
--
作者：
A. Luckman;T. Murray
使用重复通过卫星特征跟踪，雅各布港Isbravn的动态行为，其中排水约7%的格陵兰冰盖，通过其最近的变薄，加速和撤退时期进行了更详细的研究。在1995年离开正常的季节性不变的速度在接地线附近的动态表明可能的变化之前，随后的变薄阶段。加速和撤退的开始是在1998年春季，并且可能是由导致1995年春季流量增加的相同机制引起的。
Using repeat‐pass satellite feature tracking, the dynamic behaviour of Jakobshavn Isbræ, which drains around 7% of the Greenland ice sheet, is investigated in improved detail through its recent period of thinning, acceleration and retreat. The departure in 1995 from the normal seasonal invariance in velocity near the grounding line suggests a possible change in dynamics well before the subsequent thinning phase. The initiation of the acceleration and retreat is pinpointed to spring 1998 and may have been prompted by the same mechanism that gave rise to the spring 1995 flow increase.