Exploring the ingredients required to successfully model the placement, generation, and evolution of ice streams in the British-Irish Ice Sheet
Exploring the ingredients required to successfully model the placement, generation, and evolution of ice streams in the British-Irish Ice Sheet
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探索成功模拟英国-爱尔兰冰盖中冰流的位置、生成和演化所需的成分
DOI：
10.1016/j.quascirev.2019.105915
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发表时间：
2019
影响因子：
4
通讯作者：
Gandy N
中科院分区：
文献类型：
--
作者：
Gandy N
冰流演变是预测格陵兰和南极冰盖未来的一个主要不确定因素。准确模拟冰流演变需要了解控制冰流流动的位置和行为的一些“成分”。在这里，我们测试的地热通量，网格分辨率和床水文模拟冰流的影响。古记录提供了冰流演化的快照，其中一个特别受约束的冰盖是英国-爱尔兰冰盖（BIIS）。我们将一个新的基本滑动方案与热力学耦合到BISICLES冰盖模式中，模拟BIIS冰流的演变。我们发现，模拟的位置和冰流的间距匹配以及与经验重建的冰流流量的位置和方向时，简单的河床水文。我们表明，新的基础滑动方案允许准确模拟大多数的BIIS冰流。BIIS的大量经验记录允许对模型输入进行测试，并有助于展示冰盖模型在模拟数千年来冰流位置、间距和迁移演变方面的技能。模拟冰流也提示新的经验映射的功能指示流在北海峡地区。冰盖模型的开发使人们能够准确地模拟古记录，并改进对未来冰流行为的模拟。
Ice stream evolution is a major uncertainty in projections of the future of the Greenland and Antarctic Ice sheets. Accurate simulation of ice stream evolution requires an understanding of a number of “ingredients” that control the location and behaviour of ice stream flow. Here, we test the influence of geothermal heat flux, grid resolution, and bed hydrology on simulated ice streaming. The palaeo-record provides snapshots of ice stream evolution, with a particularly well constrained ice sheet being the British-Irish Ice Sheet (BIIS). We implement a new basal sliding scheme coupled with thermo-mechanics into the BISICLES ice sheet model, to simulate the evolution of the BIIS ice streams. We find that the simulated location and spacing of ice streams matches well with the empirical reconstructions of ice stream flow in terms of position and direction when simple bed hydrology is included. We show that the new basal sliding scheme allows the accurate simulation for the majority of BIIS ice streams. The extensive empirical record of the BIIS has allowed the testing of model inputs, and has helped demonstrate the skill of the ice sheet model in simulating the evolution of the location, spacing, and migration of ice streams through millennia. Simulated ice streams also prompt new empirical mapping of features indicative of streaming in the North Channel region. Ice sheet model development has allowed accurate simulation of the palaeo record, and allows for improved modelling of future ice stream behaviour.
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DOI：
10.1016/j.cageo.2006.06.016
发表时间：
2007-02
期刊：
Comput. Geosci.
影响因子：
--
作者：
Yingkui Li;Jacob Napieralski;J. Harbor;A. Hubbard
通讯作者：
Yingkui Li;Jacob Napieralski;J. Harbor;A. Hubbard
影响因子：
2.9
作者：
C. Stokes;C. Clark
通讯作者：
C. Clark
末次盛冰期，冰盖延伸至凯尔特海陆架边缘
影响因子：
4
作者：
D. Praeg;S. Mccarron;D. Dove;C. Ó. Cofaigh;Gill Scott;X. Monteys;L. Facchin;R. Romeo;P. Coxon
通讯作者：
P. Coxon
IRETHERM：爱尔兰放射热花岗岩的地热能潜力
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
T. Farrell;Alan G. Jones;M. Muller;M. Feely;A. Brock;M. Long;T. Waters
通讯作者：
T. Waters
使用相对海平面数据评估英国-爱尔兰冰盖数值模型：对修剪线观测结果解释的影响
影响因子：
2.3
作者：
J. Kuchar;G. Milne;A. Hubbard;H. Patton;S. Bradley;I. Shennan;R. Edwards
通讯作者：
R. Edwards