Impact features on Europa: rheological and thermal states of the icy crust.

Research areas:

• Intérieurs planétaires (2011 - 2016)

Year:

2001

Authors:

• L Mevel
• Olivier Grasset
• Éric Mercier

Journal:

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES

Volume:

332

Number:

3

Pages:

217-225

Month:

FEB 15

ISSN:

1251-8050

BibTex:

@article{WOS:000167769200009, author = "L Mevel and Olivier Grasset and {\'E}ric Mercier", abstract = "The depth of the brittle-ductile transition has been estimated under each graben rounding two ancient impact basins on Europa, Callanish and Tyre. Surface thermal gradients have been computed and are respectively equal to 4.3 +/- 0.4 and 2.4 +/- 0.25 K.km(-1). These results differ strongly from previous works obtained on other Europa{\&}#039;s features. This can be explained by the variation of both the icy grain size and the chemical composition of the crust, but also by the variation of the local deformation rate, a 2001 Academie des sciences / Editions scientifiques et medicales Elsevier SAS.", doi = "10.1016/S1251-8050(01)01514-2", extra = "PICL", issn = "1251-8050", journal = "COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES", month = "FEB 15", number = "3", pages = "217-225", title = "{I}mpact features on {E}uropa: rheological and thermal states of the icy crust.", volume = "332", year = "2001", }

Abstract:

The depth of the brittle-ductile transition has been estimated under
each graben rounding two ancient impact basins on Europa, Callanish and
Tyre. Surface thermal gradients have been computed and are respectively
equal to 4.3 +/- 0.4 and 2.4 +/- 0.25 K.km(-1). These results differ
strongly from previous works obtained on other Europa's features. This
can be explained by the variation of both the icy grain size and the
chemical composition of the crust, but also by the variation of the
local deformation rate, a 2001 Academie des sciences / Editions
scientifiques et medicales Elsevier SAS.