The elastic lithosphere thickness at the Martian north polar cap has recently been constrained using radar sounding data obtained by SHARAD, the shallow radar onboard the Mars Reconnaissance Orbiter....
A measurement of the martian planetary heat flow requires the determination of the subsurface temperature gradient, which is affected by surface insolation. I investigate the propagation of thermal...
On the current thermal state of Mars (2008)
The current thermal state of Mars is a fundamental unknown in Mars science. Although is has a huge influence on the planet’s current geodynamic activity and controls the possibility for basal...
Planetary Heat Flow measurements and thermal disturbances caused by lander shadowing (2008)
Grott, M., Wieczorek, M. A., Richter, L., Spohn, T.
The planetary heat flow is one of the fundamental quantities describing the thermal state of a planet. It influences the tectonic and volcanic processes we see at the surface and is closely connected...
Heat flow perturbations from isolated rock bodies in the Martian regolith (2008)
One of the key quantities for accessing the present thermal state of a planet is measuring its planetary heat flow. It yields information about tectonic and magmatic processes and is essential to...
TandEM: Titan and Enceladus mission (2008)
Coustenis, A., Atreya, S. K., Balint, T., Brown, R. H., Dougherty, M. K., Ferri, F., ...
54 pages, 8 figures.-- In press.
Is Mars Geodynamically Dead? (2008)
The observation that Mars’ northern polar cap barely deforms its crust implies that its planetary interior is colder than expected.
Grott, M., Richter, L., Spohn, T., Wieczorek, M.
The Heat flow and Physical Properties Package (HP3) is part of the Humboldt payload for ESA’s upcoming ExoMars mission and consists of an instrumented mole system, a self-penetrating probe designed...
Estimates of the martian elastic lithosphere thickness Te imply that Te increased from around 20 km in the Noachian to about 70 km in the Amazonian period. A phase of rapid lithospheric growth is...
Crustal thickness variations induce lateral pressure gradients which can drive flow in the lower crust if temperatures there are sufficiently high. The absence of large scale crustal relaxation at...
Lunar Tidal Deformation and the Interior Structure of the Moon (2008)
Sohl, F., Hussmann, H., Grott, M., Knapmeyer, M., Oberst, J., Schmitz, N.
Important clues on the constitution of the lunar interior can be gained by monitoring tidally-induced surface deformations from orbiting and landed spacecraft and earthbased, highly precise lunar...
Lunar Tidal Deformation and the Internal Structure of the Moon (2007)
Sohl, F., Hussmann, H., Grott, M., Knapmeyer, M., Oberst, J.
Monitoring tidally-induced deformations of the Moon from orbiting and landed spacecraft would provide important clues on the constitution of the lunar interior, thereby augmenting the Apollo seismic...
The crustal thickness of Mercury is only poorly constrained. Current estimates based on the observed center of mass - center of figure offset yield large crustal thickness values of 100-300 km....
Crustal thickness variations induce lateral pressure gradients which can drive flow in the lower crust if the temperatures there are sufficiently high. Gravity and topography data imply that the...
Degree-one convection and the origin of Enceladus’ dichotomy (2007)
Grott, M., Sohl, F., Hussmann, H.
Recently, the Cassini spacecraft has detected ongoing geologic activity near the south pole of Saturn’smoon Enceladus. In contrast, the satellite’s north-polar region is heavily cratered and...
Rationale for a Geophysics and Geodesy Payload for Lunar Networks (2007)
Schmitz, N., Biele, J., Grott, M., Knapmeyer, M., Oberst, J., Sohl, F., ...
The thermal structure of Martian soil and the measurability of the planetary heat flow (2007)
Grott, M., Helbert, J., Nadalini, R.
We investigate the influence of the external temperature forcing given by seasonal, interannual, and climatic temperature changes on the surface heat flow of Mars and determine how meaningful...
Degree-one convection and the origin of Enceladus’ dichotomy (2007)
Grott, M., Sohl, F., Hussmann, H.
Recently, the Cassini spacecraft has detected ongoing geologic activity near the south pole of Saturn’s moon Enceladus. In contrast, its north-polar region is heavily cratered and appears to have...
Degree-one convection and the origin of Enceladus’ dichotomy (2007)
Grott, M., Sohl, F., Hussmann, H.
Recently, the Cassini spacecraft has detected ongoing geologic activity near the south pole of Saturn’s moon Enceladus. In contrast, its north-polar region is heavily cratered and appears to have...
Formation of the double rift system in the Thaumasia Highlands, Mars (2007)
Grott, M., Kronberg, P., Hauber, E., Cailleau, B.
The Thaumasia Highland Rifts are two complex graben structures in the Thaumasia Highland belt, located in the southern Thaumasia region, Mars. The rifts are arranged 90–130 km apart in a nearly...
Grott, M., Hauber, E., Werner, S.C., Kronberg, P., Neukum, G.
Insight into the state of the early martian lithosphere is gained by modeling the topography above surface breaking thrust faults in the southern Thaumasia region. Crater counts of key surface units...
Grott, M., Helbert, J., Nadalini, R., Spohn, T.
The Heat flow and Physical Properties Package (HP3) is one of the possible payloads for ESA's upcoming ExoMars mission and includes an instrumented mole system, a self-penetrating probe designed for...
Ancient Tectonic and Volcanic Activity in the Tharsis Region (2006)
Werner, S. C., Kronberg, P., Hauber, E., Grott, M., Steinberger, B., Torsvik, T. H., ...
Kronberg, P., Hauber, E., Schäfer, T., Grott, M., Werner, S., Gwinner, K., ...
We make use of High Resolution Stereo Camera (HRSC) - imagery and MOLA-data for detailed photogeological mapping and comparative studies of rift-like structures on Mars. The present study focuses on...
Grott, M., Hauber, E., Werner, S., Kronberg, P.
In the absence of in situ measurements the mechanical response of the lithosphere to stress is one of the few clues we have to the (paleo) surface heat flow of a planet, enabling us to reconstruct...
Rifting in Acheron Fossae, Mars, Observed by the High Resolution Stereo Camera (HRSC) (2006)
Kronberg, P., Hauber, E., Schäfer, T., Grott, M., Gwinner, K., Masson, Ph., ...
Rifting on Mars: Implications for early lithospheric and crustal structure (2006)
Grott, M., Hauber, E., Werner, S. C., Neukum, G., Kronberg, P.
Rift valleys on Mars have recently attracted considerable attention and thoroughly been investigated from a geological perspective [1,2]. Apart from Valles Marineris, Martian rifts resemble...
High Heat Flux on Ancient Mars: Evidence from Rift Flank Uplift at Coracis Fossae (2005)
Grott, M., Hauber, E., Werner, S.C., Kronberg, P., Neukum, G.
We have identified flexural uplift at the flanks of the Coracis Fossae Rift valley. Modeling the topography the elastic thickness is constrained to 10.3–12.5 km, the corresponding mechanical...
Grott, M., Chernigovski, S., Glatzel, W.
Strange mode instabilities in the envelopes of massive stars lead to shock waves, which can oscillate on a much shorter timescale than that associated with the primary instability. The phenomenon is...
Instabilities of captured shocks in the envelopes of massive stars (2003)
Grott, M., Glatzel, W., Chernigovski, S.
The evolution of strange mode instabilities into the non linear regime has been followed by numerical simulation for an envelope model of a massive star having solar chemical composition, M=50M_sun,...
On a class of bounded quantum fields (2000)
Local quantum fields in 1+1 dimensions can have bounded field operators. The class of such fields which in addition obey Huygens' principle (time-like commutativity) and conformal covariance, is...