Broadband To Hit The South Pole

Albanach writes: "According to this story from the BBC bids are being invited to lay a fibre-optic cable some 1600 kilometres over polar ice, linking researchers at the South Pole with the rest of the planet. Currently, researcher's communications rely upon older satellites that have drifted from their geostationary orbits into ones that are now at least partly visible from the pole. The new cable will be laid on top of the 4km ice cap, and will have to cope with repeated freezing and stretching as the ice moves."

Comments

Not necessarily

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Instead of laying the cable in a straight line, you lay it in S-shapes. Big S-shapes. That way, there's LOTS of slack, say 500% slack, for the ice sheet movement.

Of course, you have to use a fairly flexible conduit -- copper piping should do nicely, as long as you can figure out how to make sure it doesn't kink too badly on compression. The S-shapes, again, would help, but a better material would be even better. Maybe copper line with a thick kevlar braid, along the lines of the braid used in a Chinese finger puzzle/trap.

The Canadian Armed Forces has to recalibrate their microwave dishes every eight years or so up north for CFS Alert on Elsmere Island, because the ice moves. That gets expensive in the long run (Snowcats, helicopters, men), and would be MUCH worse for Antarctica.

And finally, finding a break in the fiber wouldn't be too hard, ever heard of a time-delay reflectometer?