Skip to Main content Skip to Navigation
Journal articles

Formation of lenticulae on Europa by saucer-shaped sills

Abstract : Europa's surface contains numerous quasi-elliptical features called pits, domes, spots and small chaos. We propose that these features, collectively referred to as lenticulae, are the surface expression of saucer shaped sills of liquid water in Europa's ice shell. In particular, the inclined sheets of water that surround a horizontal inner sill limit the lateral extent of intrusion, setting the lateral dimension of lenticulae. Furthermore, the inclined sheets disrupt the ice above the intrusion allowing the inner sill to thicken to produce the observed relief of lenticulae and to fracture the crust to form small chaos. Scaling relationships between sill depth and lateral extent imply that the hypothesized intrusions are, or were, 1-5 km below the surface. Liquid water is predicted to exist presently under pits and for a finite time under chaos and domes
Complete list of metadatas

https://hal-insu.archives-ouvertes.fr/insu-02736376
Contributor : Eva Fareau <>
Submitted on : Tuesday, June 2, 2020 - 5:36:40 PM
Last modification on : Friday, September 11, 2020 - 3:09:42 AM

Links full text

Identifiers

Citation

Michael Manga, Chloé Michaut. Formation of lenticulae on Europa by saucer-shaped sills. Icarus, Elsevier, 2017, 286, pp.261-269. ⟨10.1016/j.icarus.2016.10.009⟩. ⟨insu-02736376⟩

Share

Metrics