Model help:GIPL: Difference between revisions
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= Thermo-Physical Properties Files = | |||
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!Parameter!!Description!!Unit | |||
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|width="20%"|<span>Thermo-physical properties of the mineral soil layers</span> | |||
|width="60%"|<span>Number of classes. Class id and number of layers in the class. Each layer has its own volumetric water content(%), a and b empirical coefficients(dimensionless), thawed and frozen volumetric heat capacities (Jm^{-3}K^{-1}), thawed and frozen thermal conductivities(Wm^{-1}K^{-1}), depth of the corresponding layer(m).</span> | |||
|width="20%"|<span >-</span> | |||
|-valign="top" | |||
|width="20%"|<span>Thermo-physical properties of the upper organic layers</span> | |||
|width="60%"|<span>See thermo-physical properties of the mineral soil layers description</span> | |||
|width="20%"|<span >days/^oC</span> | |||
= Etc. tab header = | = Etc. tab header = |
Revision as of 16:21, 17 August 2011
GIPL
GIPL is a heat flow with phase change model use to model permafrost thermal state and active layer depth, can be used for site specific and regional ground temperature distribution modeling.
Model introduction
GIPL(Geophysical Institute Permafrost Laboratory) is an implicit finite difference transient one-dimensional heat flow model. The model simulates ground temperature dynamics and the depth of the active layer by solving non-linear heat equation with phase change numerically. The model employs the Enthalpy method which does not require explicit treatment of the freeze/thaw moving boundary. In this model the process of freezing or thawing is occurring in accordance with unfrozen water content and soil thermal properties, and depends on the degree of soil saturation.