Thaw depth thaw line than clays. Yet another factors are the vegetation and the percentage of the soil organic matter, which influence the bulk density of the soil, and hence thermal conductivity. Thaw depth In soil science, the thaw depth or thaw line is the instantaneous level down to which the soil has warmed to zero degrees celcius. The active layer thickness is the maximum thaw depth over a period of two years. The layer of soil over the thaw depth is called the active layer, while the soil below is called permafrost. The term frost front refers to the varying position
Below the Lion Rock (song) used lyrics from this song. In the same year, the Wikimania conference was held in Hong Kong. Its motto, 'Of one mind in pursuit of our dream; All discord set aside' (), is a line from this song. Below the Lion Rock was featured to be the title song of a TV song directed by Radio Television of Hong Kong, which is more commonly referred as RTHK, in 1979. At that period, Cantonese song started to rise and aroused people's awareness. Different from other Cantonese songs, Below the Lion Rock was not meant to be satirizing the society that time.