Mars high resolution gravity fields from MRO, Mars seasonal gravity, and other dynamical parameters
- A. Konopliv, S. Asmar, M. Zuber
- Physics, Geology
- 2011
SHARAD sounding radar on the Mars Reconnaissance Orbiter
- R. Seu, R. Phillips, D. Nunes
- Geology
- 1 May 2007
[1] SHARAD (SHAllow RADar) is a sounding radar provided by Agenzia Spaziale Italiana (ASI) as a Facility Instrument on the Mars Reconnaissance Orbiter mission. Its 20-MHz center frequency and 10-MHz…
An overview of the Mars Reconnaissance Orbiter (MRO) science mission
- R. Zurek, S. Smrekar
- Physics
- 1 May 2007
[1] The Mars Reconnaissance Orbiter (MRO) is the latest addition to the suite of missions on or orbiting Mars as part of the NASA Mars Exploration Program. Launched on 12 August 2005, the orbiter…
Mars North Polar Deposits: Stratigraphy, Age, and Geodynamical Response
- R. Phillips, M. Zuber, L. Marinangeli
- GeologyScience
- 30 May 2008
The Shallow Radar (SHARAD) on the Mars Reconnaissance Orbiter has imaged the internal stratigraphy of the north polar layered deposits of Mars, revealing a laterally continuous deposition of layers which typically consist of four packets of finely spaced reflectors separated by homogeneous interpacket regions of nearly pure ice.
Venus tectonics: An overview of Magellan observations
- S. Solomon, S. Smrekar, E. Stofan
- Geology
- 1 March 1992
Magellan observations of the tectonic characteristics of highland regions on Venus are discussed with reference to competing theories for highland formation and evolution. Complex rigid terrain, or…
Recent Hotspot Volcanism on Venus from VIRTIS Emissivity Data
- S. Smrekar, E. Stofan, P. Drossart
- Geology, Environmental ScienceScience
- 30 April 2010
Variations in the thermal emissivity of the surface observed by the Visible and Infrared Thermal Imaging Spectrometer on the European Space Agency’s Venus Express spacecraft are used to identify compositional differences in lava flows at three hotspots, indicating that Venus is actively resurfacing.
Massive CO2 Ice Deposits Sequestered in the South Polar Layered Deposits of Mars
- R. Phillips, B. Davis, R. Seu
- Geology, Environmental ScienceScience
- 13 May 2011
Shallow Radar soundings from the Mars Reconnaissance Orbiter reveal a buried deposit of carbon dioxide (CO2) ice within the south polar layered deposits of Mars with a volume of 9500 to 12,500 cubic kilometers, about 30 times that previously estimated for the south pole residual cap.
Global mapping of crustal and lithospheric thickness on Venus
- F. Anderson, S. Smrekar
- Geology
- 1 August 2006
[1] We have produced a high-resolution global admittance map of Venus using a spatiospectral localization technique, calculating 64,800 admittance spectra evenly spaced in latitude and longitude. We…
Corona Formation and Heat Loss on Venus by Coupled Upwelling and Delamination
- S. Smrekar, E. Stofan
- Physics
- 29 August 1997
Coronae are volcanotectonic features that are unique to Venus and are interpreted to be small-scale upwellings. A model in which upwelling causes delamination at the edge of the plume head, along…
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