Antarctic 'pole of ignorance' finally addressed

[nitpicker]

http://www.bbc.com/news/science-environment-38333629

Antarctic 'pole of ignorance' finally addressed

By Jonathan Amos
BBC Science Correspondent, San Francisco

15 December 2016

From the section Science & Environment

The last major unknown region on Earth has just been surveyed: the South Pole. Although the Americans have had a base at the bottom of the planet for decades, what lies underneath the thick ice there has been a mystery. Now, European scientists have flown instruments back and forth across the pole to map its hidden depths. As well as finding previously unknown valleys and mountains, the team says it has acquired important data that will have uses far from Antarctica.

Known as PolarGAP, the project was largely funded by the European Space Agency (Esa) to gather measurements over an area of Earth that its satellites cannot see, as they generally only fly up to about 83 degrees in latitude. In particular, Esa wanted to understand the pole's gravity field, to complete the dataset gathered by its recent gravity-sensing spacecraft, GOCE. But in plugging this data hole, the project has also now helped scientists to realise their century-long quest to describe how the pull of gravity varies across the entire Earth.

Prof René Forsberg from the National Space Institute at the Technical University of Denmark (DTU-Space) said gravity data was fundamental knowledge needed to understand height across the planet. GPS and other satellite systems depended on having a universal reference, he explained.
(snip)

[Wounded Bear]

1. K & R ...... nt

[pscot]

2. I thought Capitol Hill

was the 'Pole of Ignorance'.

[lastlib]

3. centered on Louie Gohmert's office.......