Fractal analysis of Venus topography in Tinatin Planitia and Ovda Regio

Details Fractal analysis of Venus topography in Tinatin Planitia and Ovda Regio Fractal analysis of Venus topography in Tinatin Planitia and Ovda Regio

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9713635k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. E8, Aug. 25, 1992, p. 13,635-13,641.

Statistics

5

Equatorial Regions, Satellite Altimetry, Topography, Venus Surface, Fractals, Magellan Spacecraft (Nasa), Planetary Mass, Solar System

Scientific paper

A one-dimensional fractal analysis is applied to Magellan altimetry data for two 20 x 20 deg equatorial regions on Venus. For the Ovda Regio, highlands the power spectra of the altimetry data correlate well with power law (fractal) statistics over the full range of wavelengths considered 36-703 km; the mean fractal dimension is D(Ovda) = 1.64. For the Tinatin Planitia lowlands, the power spectra consistently show a rollover at long wavelengths, (greater than 200 km), the long-wavelength topography in this region either never developed or has subsequently relaxed. The mean of the best fit fractal dimension for Tinatin is D(Tinatin) = 1.41. The measure of roughness (RA) correlates well with variations in relief, especially at short wavelengths (about 50 km). The quantitative analysis of Venus topography can be applied on a global scale. The one-dimensional method can be extended to two-dimensional space, yielding two-dimensional maps of regional D and RA, allowing a more complete use of regional two-dimensional altimetry data.

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