Admittance Survey of Type 1 Coronae on Venus: Implications for Elastic Thickness
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منابع مشابه
Elastic Thickness Estimates for Venus from Line of Sight Accelerations
ran 1974, Watts 1978). It is of great importance to estimate the thickness of the elastic layer on Venus. It is, however, A new method of obtaining the transfer function, or admittance, Z , between the Fourier transforms of topography and only straightforward to do so if its thickness is sufficiently gravity of a planet is proposed that uses the line of sight (LOS) large to affect the gravity f...
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The elastic thickness, T e, for various regions of Venus is estimated by comparing the observed line of sight (LOS) acceleration of the Magellan spacecraft with that predicted using a spherical harmonic representation of the topography, to degree and order 360. At long wavelengths (typically longer than about 500 km) the transfer function between the topography and gravity, or admittance, usual...
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Introduction: Coronae are quasi-circular to circular volcano-tectonic features unique to Venus among the terrestrial planets. They were first identified in Venera 15/16 images [1], and their tectonic, volcanic, and topographic characteristics have been classified in detail using Magellan SAR image and topography data [2, 3]. Several studies of gravity signatures associated with coronae have bee...
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[1] The elastic lithosphere thickness Te for various locations on Venus is estimated by modeling lithospheric flexure associated with rifts, coronae, chasmata, and the moats visible around certain large volcanoes. By modeling flexure using the residual topography, a range of elastic thicknesses was found, from around 10 to 40 km or greater. A number of these values are not well-determined and o...
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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 in the context of geodynamical models. Our approach applies equally to the simple spatial windowing of harmonic data and to variable-length-scale analyses, which are analogous to a wavelet transform in the Cartes...
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تاریخ انتشار 2003