thaw depth

• permafrostPerpetually frozen earth layer
• frozenSolidified by extreme cold
• soilGround matter for planting
• meltChange from solid
• iceWater's solid form

ground · probe · measurement · climate · warming · arctic · tundra · seasonal · frost · subsurface · temperature · thawing · mud · slump · methane · bog · peat · saturated

• permafrostpermafrost thaw, frozen ground, frozen soil, frost heave, patterned ground