Venus tectonics: An overview of Magellan observations

SC Solomon, SE Smrekar… - Journal of …, 1992 - Wiley Online Library
The nearly global radar imaging and altimetry measurements of the surface of Venus
obtained by the Magellan spacecraft have revealed that deformational features of a wide …

An episodic hypothesis for Venusian tectonics

DL Turcotte - Journal of Geophysical Research: Planets, 1993 - Wiley Online Library
It is suggested that episodic plate tectonics occurs on Venus; episodes of rapid plate
tectonics are separated by periods of surface quiescence. For the last 500±200 my it is …

Localization of gravity and topography: Constraints on the tectonics and mantle dynamics of Venus

M Simons, SC Solomon… - Geophysical Journal …, 1997 - academic.oup.com
We develop a method for spatio-spectral localization of harmonic data on a sphere and use
it to interpret recent high-resolution global estimates of the gravity and topography of Venus …

The history of volcanism on Venus

MA Ivanov, JW Head - Planetary and Space Science, 2013 - Elsevier
Completion of a global geological map of Venus has provided documentation of the relative
age relationships, spatial distribution, and topographic configuration of the major geologic …

Venusian highlands: Geoid to topography ratios and their implications

SE Smrekar, RJ Phillips - Earth and Planetary Science Letters, 1991 - Elsevier
Abstract Using Pioneer Venus line-of-sight gravity data and orbit simulation procedures, we
have estimated apparent depths of isostatic compensation (ADCs) for twelve Venusian …

The Magellan Venus radar map** mission

RS Saunders, GH Pettengill… - Journal of …, 1990 - Wiley Online Library
The NASA Magellan Venus Radar Mapper spacecraft was launched into an interplanetary
transfer trajectory to Venus on May 4, 1989, and will be placed into orbit around Venus on …

A mantle plume model for the equatorial highlands of Venus

WS Kiefer, BH Hager - Journal of Geophysical Research …, 1991 - Wiley Online Library
The Equatorial Highlands of Venus consist of four main structures, Atla, Beta, Ovda, and
Thetis regiones. Each has a circular to oval‐shaped planform and rises 4–5 km above the …

Hot-spot evolution and the global tectonics of Venus

RJ Phillips, RE Grimm, MC Malin - Science, 1991 - science.org
The global tectonics of Venus may be dominated by plumes rising from the mantle and
im**ing on the lithosphere, giving rise to hot spots. Global sea-floor spreading does not …

Ribbon terrain formation, southwestern Fortuna Tessera, Venus: Implications for lithosphere evolution

VL Hansen, JJ Willis - Icarus, 1998 - Elsevier
The term tessera has been used to describe regions of deformed venusian crust exhibiting
two or more intersecting sets of structural elements; however, tessera includes terrains …

Global variations in the geoid/topography admittance of Venus

M Simons, BH Hager, SC Solomon - Science, 1994 - science.org
Global representations of geoid height and topography are used to map variations in the
geoid/topography ratio (admittance) of Venus. The admittance values are permissive of two …