论文标题

拉格朗日表述,一般相对论类似物和冰川学的对称性

Lagrangian formulation, a general relativity analogue, and a symmetry of the Vialov equation of glaciology

论文作者

Faraoni, Valerio

论文摘要

使用合适的自变量重新缩放,为非线性小葡萄干方程发现了lagrangian,该方程统治了浅冰近似中冰川和冰盖的纵向概况。这导致了(重新缩放的)Vialov方程与相对论宇宙学的弗里德曼方程之间的形式类比,这是探索的。此上下文提供了(重新定化的)Vialov方程的新对称性,并至少使用生成函数形式化了其所有溶液,这是完美塑料冰的简并案例的NYE配置文件。

Using a suitable rescaling of the independent variable, a Lagrangian is found for the nonlinear Vialov equation ruling the longitudinal profiles of glaciers and ice caps in the shallow ice approximation. This leads to a formal analogy between the (rescaled) Vialov equation and the Friedmann equation of relativistic cosmology, which is explored. This context provides a new symmetry of the (rescaled) Vialov equation and gives, at least formally, all its solutions using a generating function, which is the Nye profile for the degenerate case of perfectly plastic ice.

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