Hagen Bræ: A Surging Glacier in North Greenland—35 Years of Observations
Hagen Bræ: A Surging Glacier in North Greenland—35 Years of Observations
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哈根布雷：格陵兰岛北部汹涌的冰川——35 年的观测
DOI：
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发表时间：
2020
影响因子：
5.2
通讯作者：
L. Sørensen
中科院分区：
文献类型：
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作者：
A. Solgaard;S. Simonsen;A. Grinsted;R. Mottram;N. Karlsson;K. Hansen;A. Kusk;L. Sørensen
我们使用遥感的冰速度结合观测的表面海拔和冰川面积的变化，以调查在过去的35年中，北格陵兰岛的哈根Brendon的详细动态。从我们的数据中，我们可以首次确定哈根冰川是一个具有阿拉斯加和斯瓦尔巴特类型涌动冰川特征的涌动型冰川。我们认为，所观察到的激增是由冰川的几何形状的先决条件，并引发了englacially存储的融水。目前，冰川处于活跃和静止阶段之间的过渡状态，并没有建立其前激增的几何形状。我们认为，冰川正在调整其浮动部分的损失，一般变薄，并在峡湾条件的变化，发生在研究期间，这是无关的浪涌行为。冰速度数据的高时间分辨率使人们能够深入了解亚年度冰川流量。
We use remotely sensed ice velocities in combination with observations of surface elevation and glacier area change to investigate the dynamics of Hagen Bræ, North Greenland in high detail over the last 35 years. From our data, we can establish for the first time that Hagen Bræ is a surge‐type glacier with characteristics of both Alaskan‐ and Svalbard‐type surging glaciers. We argue that the observed surge was preconditioned by the glacier geometry and triggered by englacially stored meltwater. At present, the glacier is in a transitional state between active and quiescence phases and is not building up to its pre‐surge geometry. We suggest that the glacier is adjusting to the loss of its floating section, general thinning, and changes in fjord conditions that occurred over the study period which are unrelated to the surge behavior. The high temporal resolution of the ice velocity data gives insight to the sub‐annual glacier flow.
格陵兰岛北部彼得曼冰川冰架及其与北冰洋和大西洋的连接
影响因子：
2.8
作者：
Münchow, Andreas;Padman, Laurie;Washam, Peter;Nicholls, Keith
通讯作者：
Nicholls, Keith
影响因子：
3.4
作者：
Benn, D., I;Fowler, A. C.;Sevestre, H.
通讯作者：
Sevestre, H.