I was reading this https://earth.esa.int/documents/973910/1006684/RR3.pdf https://earth.esa.int/documents/973910/1006684/RR3.pdf (Satellite Gravimetry) earlier

I was reading this https://earth.esa.int/documents/973910/1006684/RR3.pdf https://earth.esa.int/documents/973910/1006684/RR3.pdf (Satellite Gravimetry) earlier today after seeing this article as I remembered nuclear submarines used gravimeters. Is there any information on them being used to track other subs, as I was wondering if that was possible, I know they're apparently used to map the sea floor though. Edit: This is interesting: "He showed a figure of gravity increasing by about 2 microgal over a 4-h period as men shoveled snow from the roof of the SG station" - http://ethesis.helsinki.fi/julkaisut/mat/fysik/vk/virtanen/studieso.pdf http://ethesis.helsinki.fi/julkaisut/mat/fysik/vk/virtanen/s...