Halley 6 is designed to overcome both of these problems. Firstly it built on legs that keep the station out of the snow. Each leg is actually a large hydraulic ram, once a year, each leg can be sucked up in turn and snow bulldozed underneath; once every leg is on a new snow mound every leg is extended with the result that the whole station is lifted up a 1.5m higher than it was before.
Secondly, to overcome the inexorable movement to the coast, the whole station is made to be relocatable. The idea is that every 10 to 15 years the modules could be separated and towed to a new location. This would be a big job and we would need to rebuild all the towers etc - but it will be far easier and cheaper than building a new station.
|HalleyVI in Jan 2010|
|The first module being towed in 2010/11|
|The biggest module being moved - nearly 200 tonnes.|