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Subsidence of Topography on Io

Webb, Erik K. and Stevenson, David J. (1987) Subsidence of Topography on Io. Icarus, 70 (2). pp. 348-353. ISSN 0019-1035. https://resolver.caltech.edu/CaltechAUTHORS:20131113-152707499

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Abstract

Topographic features on Io tend to subside because their underlying roots are softened and eroded by contact with hot mantle. This can be offset by crustal thickening, due primarily to ongoing volcanism, but observations suggest that this is ≲1 cm year^(−1) at current topographic highs. Since crustal thinning occurs at ∼50 cm year^(−1) if the underlying material is a pure magma ocean, we conclude that Io has no global magma ocean. Viscosities in excess of ∼10^(10) P are implied for Io's interior.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0019-1035(87)90140-0DOIArticle
http://www.sciencedirect.com/science/article/pii/0019103587901400PublisherArticle
ORCID:
AuthorORCID
Stevenson, David J.0000-0001-9432-7159
Additional Information:© 1987 Academic Press, Inc. Received October 29, 1986; revised January 28, 1987. We are grateful to Torrence Johnson for his review and helpful comments on resurfacing. The first author acknowledges support of NASA's Planetary Geology Undergraduate Research Program. Partial support was also supplied by NASA Grant NAGW-185.
Funders:
Funding AgencyGrant Number
NASA Undergraduate Student Research ProgramUNSPECIFIED
NASANAGW-185
Issue or Number:2
Record Number:CaltechAUTHORS:20131113-152707499
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20131113-152707499
Official Citation:Erik K. Webb, David J. Stevenson, Subsidence of topography on Io, Icarus, Volume 70, Issue 2, May 1987, Pages 348-353, ISSN 0019-1035, http://dx.doi.org/10.1016/0019-1035(87)90140-0. (http://www.sciencedirect.com/science/article/pii/0019103587901400)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42439
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:13 Nov 2013 23:40
Last Modified:03 Oct 2019 05:58

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