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
Members of the Australian Parliament who have served for at least 30 years House of Representatives are shown. A Father of either House is the person currently serving who has served longer, continuously, than any other currently serving member of that House. Where two or more people have equal lengths of continuous service, more than any other people, they are called joint Fathers. The more senior of the Father of the House and the Father of the Senate is the Father of the Parliament. Only those Fathers who served for 30 years or more will appear in this list. No woman yet appears on this list. Bronwyn Bishop served in the Australian parliament