High geothermal heat row, basal melt, and the origin of rapid ice how in central Greenland
High geothermal heat row, basal melt, and the origin of rapid ice how in central Greenland
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DOI：
10.1126/science.1065370
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发表时间：
2001-12-14
期刊：
影响因子：
56.9
通讯作者：
Gogineni, P
中科院分区：
文献类型：
--
作者：
Fahnestock, M;Abdalati, W;Gogineni, P
内部分层的年龄-深度关系揭示了格陵兰岛的大面积快速基底融化。融化局限于从峰顶圆顶向北流出的大冰流和冰盖东北象限的其他地区的快速冰流的开始。局部高熔体速率表明地热通量是大陆背景的15至30倍。熔体的南部边界与表明火山起源的磁异常和地形相吻合。
Age-depth relations from internal layering reveal a large region of rapid basal melting in Greenland. Melt is localized at the onset of rapid ice flow in the large ice stream that drains north off the summit dome and other areas in the northeast quadrant of the ice sheet. Locally, high melt rates indicate geothermal fluxes 15 to 30 times continental background. The southern limit of melt coincides with magnetic anomalies and topography that suggest a volcanic origin.