Volume 18, Issue 1 p. 61-64

Evidence for unusually high densities of plasma in the Venusian ionosheath

D. S. Intriligator

D. S. Intriligator

Carme1 Research Center, Santa Monica, CA 90406

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L. H. Brace

L. H. Brace

University of Michigan, Ann Arbor, MI 48109

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S. H. Brecht

S. H. Brecht

Berkeley Research Associates, Berkeley, CA 94701

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W. C. Knudsen

W. C. Knudsen

Knudsen Geophysical Research, Inc., Monte Sereno, CA 95030

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F. L. Scarf

F. L. Scarf

Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90024

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R. J. Strangeway

R. J. Strangeway

Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90024

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H. A. Taylor Jr.

H. A. Taylor Jr.

Taylor Enterprises, Nova Scotia B5A 4A5, Canada

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First published: January 1991

Abstract

An unusual occurrence was recorded by Pioneer Venus Orbiter (PVO) in the Venusian ionosheath on November 10-11, 1981 (orbit 1071): more than an order of magnitude higher densities of ions and electrons were observed than have ever been measured by PVO before then or since. This region of enhanced densities covered an extended region in the dayside ionosheath. The purpose of this paper is to briefly present our analysis of these unique observations.