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    Preliminary analysis of an expanded corona database for Venus

    Stofan, Ellen R. and Tapper, S.W. and Guest, J.E. and Smrekar, S.E and Grindrod, Peter M. (2001) Preliminary analysis of an expanded corona database for Venus. Geophysical Research Letters 28 (22), pp. 4267-4270. ISSN 0094-8276.

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    We have conducted an extensive survey of the Magellan data to reassess the population of coronae. We identify a new type of coronae, here referred to as 'Type 2 coronae', having the same basic morphology as previously identified coronae (Type 1), but lacking a significant (>50) annulus of closely spaced fractures. 106 Type 2 coronae are included in the new database giving a total of 515 coronae on Venus. The characteristics of the expanded population of Type 1 coronae are similar to those of the previously described population, but the Type 2 coronae are smaller, tend to have relatively flat interiors surrounded by a topographic rim, and are more likely to be found isolated from other features. Our observations, in particular the morphology and setting of the Type 2 coronae, may provide supporting evidence for the existence of a depleted mantle layer under the venusian plains.


    Item Type: Article
    Keyword(s) / Subject(s): Coronae, Fracture, Geophysics, Morphology, Surface topography, Planets, corona, Venus
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Natural Sciences
    Depositing User: Dr Peter Grindrod
    Date Deposited: 26 Aug 2015 11:47
    Last Modified: 02 Aug 2023 17:18


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