Jet stream in the Earths core discovered with satellites

Jet stream in the Earths core discovered with satellites

A jet stream within the Earths molten iron core has been discovered by scientists using the latest satellite data that helps create an X-ray view of the planet. Because of the cores location under 3,000 kilometres of rock, for many years scientists have studied the Earths core by measuring the planets magnetic field – one of the few options available.The first clip shows the evolution of the magnetic field at the edge of the Earths core from 1999-2016, with the second showing changes in magnetic field at the edge of the Earths core 1590-1990. Dec 19, 2016
Meltwater in East Antarctica collects in subsurface lakes

Meltwater in East Antarctica collects in subsurface lakes

A warm microclimate in a 20-kilometre zone in East Antarctica has led to the formation of extensive lakes of meltwater sandwiched between two layers of ice. The ice sheet is showing behaviour that was thought only to occur in glaciers in places such as Greenland, which are not nearly as cold as East Antarctica. Dec 12, 2016
The East Antarctic ice sheet is full of holes

The East Antarctic ice sheet is full of holes

Hot spots have been found in the East Antarctic ice sheet where holes – or moulins – are appearing in the ice sheet, allowing water to flow out into the sea. The ice sheet was not thought to be vulnerable to melting as it is one of the coldest places on Earth, but strong winds are removing snow and exposing ice below to melting. Dec 12, 2016
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