کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1782617 1022347 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The dependence of surface tidal stress on the internal structure of Europa: The possibility of cracking of the icy shell
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
The dependence of surface tidal stress on the internal structure of Europa: The possibility of cracking of the icy shell
چکیده انگلیسی

This study shows dependence of the surface diurnal tidal stress on the internal structure of Europa. Its purpose is to investigate possibility of cracking of the icy shell. The stress is evaluated under the plausible model of the internal structure constrained by the gravity field data. The possible effective stress at the sub-Jovian point decreases with thickening of the shell, while it does not depend on the core radius and the thickness of the H2OH2O layer. The range of this value is from 0.095 to 0.161 MPa, which does not exceed the tensile strength of ice. The stress required for the surface cracking would be mainly due to longer period deformations, especially non-synchronous rotation. And/or the actual strength of the ice at the surface would be smaller because of the preexisting cracks than that at a laboratory of the same temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 54, Issue 2, February 2006, Pages 170–180
نویسندگان
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