weathered layer

weathered layer

[′weth·ərd ′lā·ər]
(geophysics)
The zone of the earth which lies immediately below the surface and is characterized by low wave velocities.
References in periodicals archive ?
The third layer was a 5.3-32.2 m thick 14-47 [ohm]m resistivity clay layer and sandy layer having 755 [ohm]m resistivity and 0.9 m thickness, weathered layer having 55 [ohm]m resistivity and 16.5m thickness and 122-518 [ohm]m resistivity fractured rock, and a 924 [ohm]m fresh basement.
The results indicate that the top layer with a resistivity of 10.2ohm-m and a weathered layer of resistivity of 58.9 ohm-m, have of thicknesses 1.43m and 8.18m, respectively.
The green-oak cladding was carefully selected for economy and long-life.(6) The silver-grey weathered layer which forms eventually protects the oak board from the loss of its natural tannin protection.
K14 is located in the area of the Cista granitoid massif where the weathered layer is up to 50 m thick.