Flexure of Europa's lithosphere due to ridge-loading

T. A. Hurford, R. A. Beyer, B. Schmidt, B. Preblich, A. R. Sarid, Richard J. Greenberg

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Using photoclinometry, topographic profiles across europan ridges have been produced. These profiles allow the identification of bulges in the terrain adjacent to the ridges. The bulges are assumed to have been produced by flexure of the elastic lithosphere due to the load of the ridges, which lie along cracks in the crust. The distance from the crack to these "fore-bulges" depends on the thickness of the elastic plate being flexed. Based on a survey of ridges in Galileo images with resolution <300 m/pixel, the thickness of the elastic lithosphere has been determined by this method at a wide variety of sites along the leading and trailing hemispheres of Europa. The average thickness is about 200 m. The elastic lithosphere underneath smooth dilational bands tends to be thicker than plains morphology, an effect that is pronounced at Thynia Linea and Astypalaea Linea. Among the ridges investigated here, more recent loading correlates with a thicker elastic lithosphere, which may either reflect an intrinsically thicker layer, or less viscous relaxation over the shorter time period.

Original languageEnglish (US)
Pages (from-to)380-396
Number of pages17
JournalIcarus
Volume177
Issue number2
DOIs
StatePublished - Oct 2005

Fingerprint

Europa
flexing
flexure
lithosphere
ridges
crack
cracks
elastic plates
photogrammetry
pixel
profiles
hemispheres
plains
crust
crusts
pixels

Keywords

  • Europa
  • Satellite
  • Surfaces
  • Tectonics

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Hurford, T. A., Beyer, R. A., Schmidt, B., Preblich, B., Sarid, A. R., & Greenberg, R. J. (2005). Flexure of Europa's lithosphere due to ridge-loading. Icarus, 177(2), 380-396. https://doi.org/10.1016/j.icarus.2005.06.019

Flexure of Europa's lithosphere due to ridge-loading. / Hurford, T. A.; Beyer, R. A.; Schmidt, B.; Preblich, B.; Sarid, A. R.; Greenberg, Richard J.

In: Icarus, Vol. 177, No. 2, 10.2005, p. 380-396.

Research output: Contribution to journalArticle

Hurford, TA, Beyer, RA, Schmidt, B, Preblich, B, Sarid, AR & Greenberg, RJ 2005, 'Flexure of Europa's lithosphere due to ridge-loading', Icarus, vol. 177, no. 2, pp. 380-396. https://doi.org/10.1016/j.icarus.2005.06.019
Hurford TA, Beyer RA, Schmidt B, Preblich B, Sarid AR, Greenberg RJ. Flexure of Europa's lithosphere due to ridge-loading. Icarus. 2005 Oct;177(2):380-396. https://doi.org/10.1016/j.icarus.2005.06.019
Hurford, T. A. ; Beyer, R. A. ; Schmidt, B. ; Preblich, B. ; Sarid, A. R. ; Greenberg, Richard J. / Flexure of Europa's lithosphere due to ridge-loading. In: Icarus. 2005 ; Vol. 177, No. 2. pp. 380-396.
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