Simplified equations for lower crustal flow driven by lateral pressure gradients
Simplified equations for lower crustal flow driven by lateral pressure gradients
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侧压力梯度驱动的下地壳流动的简化方程
DOI:
10.1093/gji/ggab125
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发表时间:
2021
影响因子:
2.8
通讯作者:
Humphreys, Eugene
中科院分区:
文献类型:
--
作者:
Perry-Houts, Jonathan;Humphreys, Eugene
Evidence from seismology, geology and geodynamic studies suggests that regional-scale lower crustal flow occurs in many tectonic settings. Pressure gradients caused by mantle processes and crustal density heterogeneity can provide driving force for lower crustal flow. Numerically modelling such flow can be computationally expensive. However, by exploiting symmetry in the physical system, it is possible to represent the vertical component of flow in terms of its lateral components, thereby reducing the problem’s spatial dimension by one. Here, we present a mathematical formulation for flow in a viscous channel below an elastic upper plate, which is optimized for solution by common numerical methods. Our formulation drastically reduces the computational load required to simulate lower crustal flow over large areas and long timescales. We apply this model to two example problems, with and without an elastic upper plate, identifying combinations of parameters that are capable of generating measurable geologic uplift.
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影响因子:
2.8
作者:
Huilin Wang;C. Currie
通讯作者:
C. Currie
影响因子:
--
作者:
S. Kruse;M. McNutt;J. Phipps-Morgan;L. Royden;B. Wernicke
通讯作者:
S. Kruse;M. McNutt;J. Phipps-Morgan;L. Royden;B. Wernicke
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
N. McQuarrie;D. Rodgers
通讯作者:
D. Rodgers
影响因子:
8.2
作者:
J. Strehlau;R. Meissner
通讯作者:
R. Meissner