000004996 001__ 4996
000004996 005__ 20201029090532.0
000004996 037__ $$aCTALK-2020-0126
000004996 100__ $$aPfeffer, Julia
000004996 245__ $$aThe GRACEFUL project : probing the Earth’s deep interior with satellite observations of the gravity field, magnetic field and earth’s rotation.
000004996 260__ $$c2020
000004996 269__ $$c2020-10-26
000004996 520__ $$aConvective motions in the Earth’s liquid core are known to  generate temporal variations of the magnetic field and of the length of day. Mass redistribution associated with these motions and exchange of matter with the lower mantle at the core mantle boundary (CMB) may eventually also contribute to the temporal variations of the gravity field, possibly detectable in the data of the GRACE and GRACE Follow On missions. In a pioneering work, Mandea et al., 2012 detected compelling spatio-temporal correlations at interannual time scale between the gravity and magnetic fields measured respectively by the GRACE and CHAMP satellite missions. These correlations were later interpreted by these authors as the results of physico-chemical interactions between the core and the mantle at the CMB. While such mechanisms are plausible, their mere existence, order of magnitude and  time scales remain an open question. Here we present the  GRACEFUL project, recently selected by the  "Synergy" programme of the European Research Council, which objective is to  explore in more detail the previously reported observations described above, in particular the interannual co-variations of the magnetic and gravity fields, as well as their link with deep Earth processes.  This presentation is focused on the  gravity field component, in particular on the search for the deep Earth signal that we hope to be able to detect in the  GRACE/GRACE FO data,  after removing all other contributions due to water mass redistributions occurring in the surface fluid envelopes, as well as  unrelated solid Earth signals associated with the Glacial Isostatic Adjustment and large earthquakes.
000004996 536__ $$aEU/$$cERC/$$fGRACEFUL
000004996 594__ $$aNO
000004996 6531_ $$agravity
000004996 6531_ $$aGRACE
000004996 700__ $$aCazenave, Anny
000004996 700__ $$aMandea, Mioara
000004996 700__ $$aDehant, Véronique
000004996 700__ $$aBarnoud, Anne
000004996 773__ $$tThe GRACE/GRACE-FO Science Team Meeting 2020, virtual
000004996 8560_ $$fveronique.dehant@observatoire.be
000004996 85642 $$ahttps://meetingorganizer.copernicus.org/GSTM2020/GSTM2020-23.html
000004996 85642 $$ahttps://doi.org/10.5194/gstm2020-23
000004996 906__ $$aContributed
000004996 980__ $$aCTALKCONT