Venus: Preliminary Topographic and Surface Imaging Results from the Pioneer Orbiter

@article{Pettengill1979VenusPT,
  title={Venus: Preliminary Topographic and Surface Imaging Results from the Pioneer Orbiter},
  author={Gordon H. Pettengill and Peter G. Ford and Walter E. Brown and William M. Kaula and Harold Masursky and Eric M. Eliason and George E. Mcgill},
  journal={Science},
  year={1979},
  volume={205},
  pages={90 - 93}
}
Three large Venus surface features, identified previously in images obtained from Earth-based radar observations, are shown by the Pioneer Venus radar mapper to be elevated 5 to 10 kilometers above the surrounding terrain. Two of these features, one bright and the other dark, lie adjacent to each other astride the 65�N parallel between longitudes 310�E and 10�E. The combined region forms a huge tectonically uplifted plateau, surmounted by radar-bright ridges that may have either a volcanic or… 
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Loriot of Massachusetts Iftstitute of Technology for valuable assistance in prepanng many aspects of the digital data