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View article: 4D dynamic earth: Advancing our understanding of the planet’s interior
4D dynamic earth: Advancing our understanding of the planet’s interior Open
4D dynamic earth: Advancing our understanding of the planet’s interior B.C. (Bart) Root, an Assistant Professor at Delft University of Technology, discusses the 4D Dynamic Earth: Phase 1 project, which is enhancing our understanding of the…
View article: Triton’s Path to Circularisation: Implications of Frequency-Dependent Tidal Dissipation and Ice Shell Feedback
Triton’s Path to Circularisation: Implications of Frequency-Dependent Tidal Dissipation and Ice Shell Feedback Open
Neptune’s moon Triton is most likely a captured Kuiper-belt object [1, 2]. After capture, Triton was deposited onto a highly eccentric and energetic orbit from which it circularised to its present day nearly circular orbit [3]. Triton’s ci…
View article: Application of Satellite Gravimetry and AI to Map the Density Distributions of Mars’s Upper Layers
Application of Satellite Gravimetry and AI to Map the Density Distributions of Mars’s Upper Layers Open
Satellite gravimetry data from Mars offers a unique glimpse into the planet's interior structure. Combined with topography data of the planet's surface, measurements of the gravitational field can be used to probe the lateral density varia…
View article: Exploring the origin of lunar magnetic anomalies through the Parker Inversion method
Exploring the origin of lunar magnetic anomalies through the Parker Inversion method Open
It is not yet understood whether the origin of the observed heterogeneous and weak lunar crustal magnetism is tied to a now extinct core-dynamo [1], to asteroid impacts [2, 3] or to a combination of both phenomena [4]. When using recent ma…
View article: Satellite gravity-rate observations to uncover Martian plume-lithosphere dynamics
Satellite gravity-rate observations to uncover Martian plume-lithosphere dynamics Open
Several orbiters and landers at Mars have allowed to unravel valuable knowledge about its surface and interior. Tracking of the satellites MGS, MRO, and Odyssey have provided us with detailed knowledge about the gravitational field of Mars…
View article: Benchmarking dynamic topography across geodynamical codes
Benchmarking dynamic topography across geodynamical codes Open
During the ESA funded 4D Dynamic Earth project, different sensitivity studies are performed to understand the applicability of current ground and satellite datasets available to study the dynamical behavior of the solid Earth, in particula…
View article: Constraining the distribution of radiogenics on the Moon from global geodynamic models
Constraining the distribution of radiogenics on the Moon from global geodynamic models Open
The predominant concentration of volcanic activity and surface enrichment of heat producing elements (HPE) on the lunar nearside suggest an asymmetry in interior properties and thermal history of the Moon. The distribution of HPE beneath t…
View article: 3D Lithospheric-scale thermal model of central and southern California
3D Lithospheric-scale thermal model of central and southern California Open
The relationship between the long-term strength of the lithosphere and seismic hazard has remained a fundamental, yet open question in geosciences. The lithosphere's long-term rheology controls its deformation patterns, playing a crucial r…
View article: Geodynamic modelling the thermochemical structure of the Earth's mantle using integrated geophysical and petrological inversion of surface wave and satellite gravity data
Geodynamic modelling the thermochemical structure of the Earth's mantle using integrated geophysical and petrological inversion of surface wave and satellite gravity data Open
The lateral and vertical thermochemical heterogeneity in the mantle is a long-standing question in geodynamics. The forces that control mantle flow and therefore Plate Tectonics arise from the density and viscosity lateral and vertical var…
View article: GRACE and GRACE-FO constraints on 3D GIA models
GRACE and GRACE-FO constraints on 3D GIA models Open
Glacial isostatic adjustment is the response of the solid Earth to past ice sheets. It is the largest secular gravity increase in GRACE and GRACE-FO data. Models of GIA are used to correct GRACE observations for ice mass and sea level chan…
View article: Glacial isostatic adjustment on Mars
Glacial isostatic adjustment on Mars Open
Introduction:  The response of a planet to loading is intimately linked to its interior structure. On Earth, studying the time-variable response of the lithosphere to the growth and decay of large ice sheets, or glacial isostatic adju…
View article: The present-day surface heat flux of the Moon from global geodynamic and crustal thickness models.
The present-day surface heat flux of the Moon from global geodynamic and crustal thickness models. Open
The surface heat flux provides important constraints on the present-day thermal state of the lunar interior. In situ surface heat flux measurements, performed during the Apollo program, obtained surface heat flux values of 21±3 and 14…
View article: Exploration of high mass subsurface structures in the northern hemisphere with joint flexure and mantle convection modelling of the Martian gravity field 
Exploration of high mass subsurface structures in the northern hemisphere with joint flexure and mantle convection modelling of the Martian gravity field  Open
NASA’s InSight mission has brought new information about the Martian lithosphere (Banerdt et al. 2020), which warrants a re-analysis of the support of the crustal and sub-crustal masses. Furthermore, the discovery of a possible mantl…
View article: Satellite gravity-rate observations to uncover Martian plume-lithosphere dynamics
Satellite gravity-rate observations to uncover Martian plume-lithosphere dynamics Open
In the past few decades, Mars-oriented orbiters and landers have allowed to unravel valuable knowledge about Mars’ surface and interior. With the InSight mission, seismic waves have indicated the presence of more frequent Marsquakes …
View article: Present-day surface heat flux variations on the Moon from global geodynamic and crustal thickness models
Present-day surface heat flux variations on the Moon from global geodynamic and crustal thickness models Open
High resolution gravity field measurements from GRAIL [1], in-situ heat flux [2] and seismic measurements from Apollo [3,4], surface composition from Clementine and Lunar Prospector [5,6], and the analysis of lunar samples have provided a …
View article: Sensitivity analysis on gravity change data in order to observe mantle convection
Sensitivity analysis on gravity change data in order to observe mantle convection Open
With the GRACE-FO mission well underway and the plans of the MAGIC/NGGM mission in the future, there will be several decades of satellite gravity change data available. Both periodic and secular mass changes are studied with this data, mos…
View article: Gravity-Field Estimation of Asteroids
Gravity-Field Estimation of Asteroids Open
With the increasing interest in the Solar System's smaller bodies, quite a few missions have been sent to comets and asteroids, and more will be send in the near future. Due to the large distances involved, communication to command mission…
View article: The global gravity field of Mars reveals an active interior
The global gravity field of Mars reveals an active interior Open
Mars hosts the largest volcano in our solar system, Mons Olympus. Up until now, flexural isostasy has commonly been used to understand the relationship between observed topography, crustal structure, and gravity. NASA’s InSight mission has…
View article: Simulating horizontal crustal motions of glacial isostatic adjustment using compressible Cartesian models
Simulating horizontal crustal motions of glacial isostatic adjustment using compressible Cartesian models Open
SUMMARY Significant land uplift and horizontal motions have been recorded with Global Navigation Satellite Systems (GNSS) in areas such as Alaska, Iceland and the Northern Antarctic Peninsula (NAP) as a result of Glacial Isostatic Adjustme…
View article: The changing gravity field due to a superplume under the Tharsis Region
The changing gravity field due to a superplume under the Tharsis Region Open
The Tharsis Region has been an interest of study for many years due to its large impact on the long wavelength gravity field and topography of Mars. The leading theory on the origin of the volcanic region is a combination of both isostatic…
View article: Is the lithospheric flexure strong enough to hold up the Tharsis Rise? A re-analysis of flexure on Mars
Is the lithospheric flexure strong enough to hold up the Tharsis Rise? A re-analysis of flexure on Mars Open
The largest volcanos in our Solar System are part of a huge volcanic complex, named Tharsis Rise, which is located on the Martian surface several kilometers higher than the average topography. Moreover, the gravitational field of Mars show…
View article: Inversion of the lateral density variations of the lithosphere using the full gravity gradient tensor
Inversion of the lateral density variations of the lithosphere using the full gravity gradient tensor Open
Flexural isostasy is commonly used to understand the relationship between the observed topography, the crustal structure, and the gravity. Compared to local isostasy, flexural models behave like low-pass filters on the crust-mantle interfa…
View article: MaQuIs - Mars Quantum Gravity Mission
MaQuIs - Mars Quantum Gravity Mission Open
With MaQuIs we propose a mission to investigate the gravitational field of Mars. Observing the gravitational field over time yields information about the planets tectonic lithoshphere, mass distribution, and composition. Consequently, this…
View article: MaQuIs - Mars Quantum Gravity Mission
MaQuIs - Mars Quantum Gravity Mission Open
The aim of this paper is to propose a Mars Quantum Gravity Mission (MaQuIs). The mission is targeted at improving the data on the gravitational field of Mars, enabling studies on planetary dynamics, seasonal changes, and subsurface water r…
View article: Rocky worlds: What do a planet's orbital parameters tell us about its mantle state?
Rocky worlds: What do a planet's orbital parameters tell us about its mantle state? Open
<p>Rocky (exo)planets can be classified based on their mantle viscous state. The mantle viscosity influences the efficiency of convection and heat loss of the planet, altering the outgassing rate. Low viscous planets are hypothesized…
View article: A re-analysis of the lithospheric flexure on Mars
A re-analysis of the lithospheric flexure on Mars Open
<p>Mars hosts the largest volcano in our solar system, Mons Olympus. This volcano is part of a huge volcanic complex, named Tharsis Rise, which is situated several kilometers higher than the average surface. Flexural isostasy is comm…
View article: Asteroid Gravity-Field Estimation
Asteroid Gravity-Field Estimation Open
<p class="p1"><strong>1. Introduction</strong></p> <p class="p1">With the increasing interest in the Solar System's smaller bodies, quite a few missions have been sent to comets and asteroi…