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Oelke, C., T. Zhang, M. Serreze, and R. Armstrong, 2003: Regional-scale modeling of soil freeze/thaw over the Arctic drainage basin. J. Geophys. Res., 108 (D10): Art.No. 4314 May 29, 2003.
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is the instantaneous level down to which the soil has warmed to zero degrees
Celsius. The active layer thickness is the maximum thaw depth over a period of two years.
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In construction, the thaw depth is a major factor in ensuring the structural integrity of the objects in question.
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cannot penetrate beyond the active layer, which places restrictions on which plants can grow in permafrost.
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The knowledge of the thaw depth is important for the two major reasons: its influence on the
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refers to the varying position of the thaw line during the periods of freezing/thawing.
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The primary factor that determines the thaw depth is the maximal air temperature. The
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138:, which influence the bulk density of the soil, and hence thermal conductivity.
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69:, etc.). These influences are mediated by the effects of the dynamics
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The layer of soil over the thaw depth is called the
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126:soils have much deeper thaw line than
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110:is another important factor: coarser
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35:, while the soil below is called
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134:and the percentage of the
89:processes in permafrost.
130:. Other factors are the
120:thermal conductivity
136:soil organic matter
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179:Ground freezing
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116:parent material
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122:, and, e.g.,
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79:geomorphologic
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169:Soil science
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118:have higher
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55:construction
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33:active layer
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18:soil science
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44:frost front
184:Permafrost
174:Glaciology
163:Categories
142:References
132:vegetation
87:hydrologic
71:biological
37:permafrost
22:thaw depth
108:soil type
75:pedologic
63:pipelines
59:buildings
42:The term
26:thaw line
112:textures
114:of the
53:and on
51:ecology
98:plants
85:, and
20:, the
128:clays
124:sandy
94:roots
67:roads
96:of
24:or
16:In
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