Mission design, operation and exploitation of the gravity field and steady-state ocean circulation explorer mission

Floberghagen, Rune; Fehringer, M.; Lamarre, Daniel; Muzi, D.; Frommknecht, B.; Steiger, Christoph; Piñeiro, Juan F.; Costa, Andrea

doi:10.1007/s00190-011-0498-3

Cited by 223 publications

(123 citation statements)

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“…The satellite-gravity observations have also been used to interpret the Earth's inner structure. This becomes particularly possible with the advent of three dedicated satellite-gravity missions, namely the Challenging Mini-satellite Payload (CHAMP) [4][5][6], the Gravity Recovery and Climate Experiment (GRACE) [7] and the Gravity field and steady-state Ocean Circulation Explorer (GOCE) [8,9]. The latest gravitational models derived from these satellite missions have a spatial resolution about 66 to 80 km (in terms of a half-wavelength).…”

Section: Introductionmentioning

confidence: 99%

Moho Density Contrast in Central Eurasia from GOCE Gravity Gradients

et al. 2016

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Seismic data are primarily used in studies of the Earth's inner structure. Since large parts of the world are not yet sufficiently covered by seismic surveys, products from the Earth's satellite observation systems have more often been used for this purpose in recent years. In this study we use the gravity-gradient data derived from the Gravity field and steady-state Ocean Circulation Explorer (GOCE), the elevation data from the Shuttle Radar Topography Mission (SRTM) and other global datasets to determine the Moho density contrast at the study area which comprises most of the Eurasian plate (including parts of surrounding continental and oceanic tectonic plates). A regional Moho recovery is realized by solving the Vening Meinesz-Moritz's (VMM) inverse problem of isostasy and a seismic crustal model is applied to constrain the gravimetric solution. Our results reveal that the Moho density contrast reaches minima along the mid-oceanic rift zones and maxima under the continental crust. This spatial pattern closely agrees with that seen in the CRUST1.0 seismic crustal model as well as in the KTH1.0 gravimetric-seismic Moho model. However, these results differ considerably from some previously published gravimetric studies. In particular, we demonstrate that there is no significant spatial correlation between the Moho density contrast and Moho deepening under major orogens of Himalaya and Tibet. In fact, the Moho density contrast under most of the continental crustal structure is typically much more uniform.

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Section: Introductionmentioning

confidence: 99%

Moho Density Contrast in Central Eurasia from GOCE Gravity Gradients

et al. 2016

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“…The very low Earth orbit of the GOCE mission, at 270 km altitude, its drag compensated platform, and the unprecedented quality of its accelerometers [Floberghagen et al, 2011] allow us to recover very precisely the nongravitational forces exerted on the satellite and deduce air density and winds in the thermosphere along the satellite track [Doornbos et al, 2010]. The nongravitational accelerations of the satellite are known to within 2 × 10 −12 m/s 2 [Floberghagen et al, 2011]. The density and wind retrieval along satellite track have an uncertainty smaller than 1% and are provided with ten seconds sampling.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric gravity waves due to the Tohoku‐Oki tsunami observed in the thermosphere by GOCE

Garcia

Doornbos

Bruinsma³

et al. 2014

JGR Atmospheres

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Oceanic tsunami waves couple with atmospheric gravity waves, as previously observed through ionospheric and airglow perturbations. Aerodynamic velocities and density variations are computed from Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) accelerometer and thruster data during Tohoku-Oki tsunami propagation. High-frequency perturbations of these parameters are observed during three expected crossings of the tsunami-generated gravity waves by the GOCE satellite. From theoretical relations between air density and vertical and horizontal velocities inside the gravity wave, we demonstrate that the measured perturbations are consistent with a gravity wave generated by the tsunami and provide a way to estimate the propagation azimuth of the gravity wave. Moreover, because GOCE measurements can constrain the wave polarization, a marker (noted C 3 ) of any gravity wave crossing by the GOCE satellite is constructed from correlation coefficients between the observed atmospheric state parameters. These observations validate a new observation tool of thermospheric gravity waves generated by tsunamis above the open ocean.

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“…Features 28 tailored to the needs of a gravitational experiment of this high standard. Since November 2009 GOCE is delivering science data [6], see also [7]. Figure 1 shows the global geoid as derived from the first six months of data.…”

Section: Epn 44/1mentioning

confidence: 99%