Newton har ikke levet forgæves ...
Newton on a global scale ...
The first global gravity model based on GOCE satellite data has been presented at ESA’s Living Planet Symposium. ESA launched GOCE in March 2009 to map Earth's gravity with unprecedented accuracy and resolution.
The model, based on only two months of data, from November and December 2009, shows the excellent capability of the satellite to map tiny variations in Earth’s gravity.
"GOCE is delivering where it promised: in the fine spatial scales," GOCE Mission Manager Rune Floberghagen said.
"We have already been able to identify significant improvements in the high-resolution 'geoid', and the gravity model will improve as more data become available."
The geoid is the shape of an imaginary global ocean dictated by gravity in the absence of tides and currents. It is a crucial reference for accurately measuring ocean circulation, sea-level change and ice dynamics – all affected by climate change. [...]
Read more: http://www.esa.int/esaEO/SEMY0FOZVAG_index_0.html