A boundary sometimes identified in perennially Frozen Ground, representing the base of a Relict Active Layer, as well as the corresponding earlier Permafrost Table. A Thaw Unconformity may be recogniz
ed by differences in Ice Contents, stable isotope contents, and heavy mineral and pollen assemblages above and below the unconformity.
A boundary sometimes identified in perennially frozen ground, representing the base of a relict active layer, as well as the corresponding earlier permafrost table.
A boundary sometimes identified in perennially frozen ground, representing the base of a relict active layer, as well as the corresponding earlier permafrost table
The reduction in shear strength due to the decrease in effective stresses resulting from the generation and slow dissipation of excess pore pressures when frozen soils containing ice are thawing.
The reduction in shear strength due to the decrease in effective stresses resulting from the generation and slow dissipation of excess pore pressures when frozen soils containing Ice are thawing. The
usual effects of Thaw Weakening are a significant decrease in bearing capacity and an increase in instability problems. A soil is called thaw stable if it is not affected by Thaw Weakening.
The reduction in shear strength due to the decrease in effective stresses resulting from the generation and slow dissipation of excess pore pressures when frozen soils containing ice are thawing