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Preliminary analysis of an expanded corona database for Venus

Stofan, ER; Smrekar, SE; Tapper, SW; Guest, JE; Grindrod, PM; (2001) Preliminary analysis of an expanded corona database for Venus. Geophysical Research Letters , 28 (22) 4267 - 4270. 10.1029/2001GL013307. Green open access

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Abstract

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 I 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.

Type: Article
Title: Preliminary analysis of an expanded corona database for Venus
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/2001GL013307
Publisher version: http://dx.doi.org/10.1029/2001GL013307
Language: English
Additional information: Copyright 2001 by the American Geophysical Union
Keywords: Tectonics, Evolution, Features, Hotspots, Models, Origin
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/113429
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