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Cassini Observes the Active South Pole of Enceladus

Porco, C. C. and Helfenstein, P. and Thomas, P. C. and Ingersoll, A. P. and Wisdom, J. and West, R. and Neukum, G. and Denk, T. and Wagner, R. and Roatsch, T. and Kieffer, S. and Turtle, E. and McEwen, A. and Johnson, T. V. and Rathbun, J. and Veverka, J. and Wilson, D. and Perry, J. and Spitale, J. and Brahic, A. and Burns, J. A. and DelGenio, D. A. and Dones, L. and Murray, C. D. and Squyres, S. (2006) Cassini Observes the Active South Pole of Enceladus. Science, 311 (5766). pp. 1393-1401. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20130125-103250989

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Abstract

Cassini has identified a geologically active province at the south pole of Saturn's moon Enceladus. In images acquired by the Imaging Science Subsystem (ISS), this region is circumscribed by a chain of folded ridges and troughs at ∼55°S latitude. The terrain southward of this boundary is distinguished by its albedo and color contrasts, elevated temperatures, extreme geologic youth, and narrow tectonic rifts that exhibit coarse-grained ice and coincide with the hottest temperatures measured in the region. Jets of fine icy particles that supply Saturn's E ring emanate from this province, carried aloft by water vapor probably venting from subsurface reservoirs of liquid water. The shape of Enceladus suggests a possible intense heating epoch in the past by capture into a 1:4 secondary spin/orbit resonance.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.1123013 DOIArticle
http://www.sciencemag.org/content/311/5766/1393PublisherArticle
ORCID:
AuthorORCID
Ingersoll, A. P.0000-0002-2035-9198
Wilson, D.0000-0001-6002-423X
Additional Information:© 2006 American Association for the Advancement of Science. 25 November 2005; accepted 21 February 2006. We acknowledge the financial support of NASA/JPL, the UK Particle Physics and Astronomy Research Council, the Deutsches Zentrum fur Luft- und Raumfahrt (German Aerospace Center), and Université Paris VII Denis Diderot, Commissariat à l’Énergie Atomique, Astrophysique Interactions Multieschelle, France.
Funders:
Funding AgencyGrant Number
NASAUNSPECIFIED
JPLUNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Deutsches Zentrum fur Luft- und Raumfahrt (DLR)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Record Number:CaltechAUTHORS:20130125-103250989
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130125-103250989
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36593
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:25 Jan 2013 19:11
Last Modified:24 Oct 2017 23:12

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