GOCE 4 coseismic process 4 earthquake prediction Andes 2 Bouguer anomaly 2 Continental margins 2 EOS 2 Earthquake interaction 2 Forecasting and monitoring 2 Forecasting, and prediction 2 Great megathrust earthquakes 2 Megathrust earthquakes 2 Pre-seismic geoid changes 2 Satellite gravimetry 2 South Andes 2 Subduction 2 Subduction zones 2 Vertical gravity gradient 2 continental margin 2 crustal structure 2 deformation 2 earthquake event 2 earthquake magnitude 2 earthquake mechanism 2 earthquake precursor 2 earthquake rupture 2 geoid 2 gravimetry 2 gravity field 2 intraplate process 2