Scalings for Submarine Melting at Tidewater Glaciers from Buoyant Plume Theory
Scalings for Submarine Melting at Tidewater Glaciers from Buoyant Plume Theory
复制标题
根据浮力羽流理论对潮水冰川的海底融化进行缩放
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
T. Cowton
中科院分区：
文献类型：
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作者：
D. Slater;D. Goldberg;P. Nienow;T. Cowton
格陵兰冰盖边缘与海洋变暖同步的快速动态变化引起了人们的关注，即潮汐冰川可能对海洋强迫做出敏感反应。然而，对海洋强迫过程的理解仍处于萌芽阶段。作者运用浮力羽流理论，研究了在潮汐冰川接地线上，由冰下流量进入峡湾而产生的冰前流量羽流的动力学，得出了诱发海底融化的标度。针对高流量潮汐冰川的相关参数空间，作者提出，在无分层峡湾中，只要流量低于临界值，无论羽流几何形状如何，通常引用的海底总融水体积与冰下流量之间的关系提高到1 / 3幂是合适的。在这些情况下，就有可能形成一个简单的方程，估计海底总熔体体积作为流量、峡湾温度的函数……
AbstractRapid dynamic changes at the margins of the Greenland Ice Sheet, synchronous with ocean warming, have raised concern that tidewater glaciers can respond sensitively to ocean forcing. Understanding of the processes encompassing ocean forcing nevertheless remains embryonic. The authors use buoyant plume theory to study the dynamics of proglacial discharge plumes arising from the emergence of subglacial discharge into a fjord at the grounding line of a tidewater glacier, deriving scalings for the induced submarine melting. Focusing on the parameter space relevant for high discharge tidewater glaciers, the authors suggest that in an unstratified fjord the often-quoted relationship between total submarine melt volume and subglacial discharge raised to the ⅓ power is appropriate regardless of plume geometry, provided discharge lies below a critical value. In these cases it is then possible to formulate a simple equation estimating total submarine melt volume as a function of discharge, fjord temperature...
影响因子：
5.2
作者：
Cook, S.;Rutt, I. C.;James, T. D.
通讯作者：
James, T. D.