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Pioneer venus radar mapper experiment.

G H Pettengill, P G Ford, W E Brown

    Science (New York, N.Y.)
    |February 23, 1979
    PubMed
    Summary
    This summary is machine-generated.

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    Pioneer Venus orbiter data revealed a 7-kilometer-deep rift valley on Venus, alongside a rolling plain. Planetary oblateness is likely less than 1/2500.

    Area of Science:

    • Planetary Science
    • Geology of Venus

    Background:

    • Venus exhibits diverse geological features.
    • Previous missions provided limited high-resolution topographic data.

    Purpose of the Study:

    • To analyze altimetry and radar scattering data from the Pioneer Venus orbiter.
    • To identify and characterize major geological features on Venus.

    Main Methods:

    • Utilized altimetry data from the Pioneer Venus orbiter.
    • Analyzed radar scattering measurements.

    Main Results:

    • Discovered a rift valley with up to 7 km vertical relief.
    • Identified a distinct, gently rolling plain adjacent to the rift valley.
    • Constrained planetary oblateness to be less than 1/2500.

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    Conclusions:

    • The findings suggest significant tectonic activity on Venus.
    • The identified features provide new insights into Venusian geology.
    • Further analysis can refine our understanding of Venus's shape and geological history.