Documentation for PISM, the Parallel Ice Sheet Model


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applications:201707 [2017/07/17 21:59] (current)
Ed Bueler created by copy of future_applications:201707
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 +====== July 2017 ======
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 +| **[[https://​​10.5194/​tc-10-1753-2016|Similitude of ice dynamics against scaling of geometry and physical parameters]]** ||
 +| **investigators**:​ | [[http://​​~johfeld/​|J. Feldmann]] and [[http://​​~anders/​|A. Levermann]]|
 +| **journal**:​ | [[http://​​index.html|The Cryosphere]] |
 +Fluid dynamics experiments are often only possible because theory allows rescaling a flow to fit into a laboratory. ​ The target flow and its laboratory analogue must be dynamically-similar in the sense of dimensional analysis. ​ Engineers study rivers and air flow around airframes, and we can generate laboratory models of ice flow, by such "​similitude"​. ​ For example, the {{:​manual.pdf|PISM User's Manual}} includes a simulation of a [[https://​​10.1017/​jfm.2012.545|laboratory-scale radial flow of a Xanthan gum solution]], one which is similar to a grounded ice sheet.
 +This paper gives a framework for dynamical scaling of marine ice sheets. ​ For the SSA dynamical model they derive scaling conditions between the vertical and horizontal lengths, ​ the relevant physical parameters, and the response time.  Timing of grounding-line changes is a particular focus. ​ These relationships give parameter sets that leave the ice-sheet geometry unchanged, effectively rules for the design of numerical and laboratory experiments.
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applications/201707.txt ยท Last modified: 2017/07/17 21:59 by Ed Bueler
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