Giese, Bernd and Helfenstein, P. and Hauber, Ernst and Hussmann, H. and Wagner, Roland (2017) An exceptionally high standing ridge on Enceladus. In: EPSC Abstracts, Vol 11, EPSC2017-28. EPSC 2017, 17.-22. Sep. 2017, Riga, Latvija.
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Official URL: http://meetingorganizer.copernicus.org/EPSC2017/poster_programme/26060
Abstract
Cassini stereo-derived topography reveals an exceptionally high-standing sawtooth-shaped ridge in Enceladus’ Samarkand Sulcus. Over a length of 100 km and of a width of 10 km, it reaches elevations of up to 1750 m, which makes it the highest ridge observed on Enceladus so far. Flank slopes reach 40°. The morphology of the ridge suggests that it formed first by rift flank-uplift caused by extension, but sinistral shear and compression later modified the shape. This modification has in particular emplaced small-scale fragments sticking out of the surface and creating a (previously enigmatic) pattern of black spots on the sun facing side of the ridge. Modelling of uplift related lithospheric flexure yields an effective elastic thickness (Te) of 0.36 km (E=1 GPa) at the time of formation, similar to results obtained in Harran Sulcus [1]. Considering the ridge as a load on the lithosphere at present-day, we obtain a lower limit on Te of 1.5 km. Within an asteroid/comet based impact chronology the ridge is 3.6/0.7 Gy old.
Item URL in elib: | https://elib.dlr.de/113023/ | ||||||||||||||||||
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Document Type: | Conference or Workshop Item (Poster) | ||||||||||||||||||
Title: | An exceptionally high standing ridge on Enceladus | ||||||||||||||||||
Authors: |
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Date: | 2017 | ||||||||||||||||||
Journal or Publication Title: | EPSC Abstracts, Vol 11, EPSC2017-28 | ||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | Enceladus, topography, ridges, icy satellites, Saturn satellites | ||||||||||||||||||
Event Title: | EPSC 2017 | ||||||||||||||||||
Event Location: | Riga, Latvija | ||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||
Event Dates: | 17.-22. Sep. 2017 | ||||||||||||||||||
Organizer: | Europlanet | ||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||
HGF - Program Themes: | Space Science and Exploration | ||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||
DLR - Program: | R EW - Erforschung des Weltraums | ||||||||||||||||||
DLR - Research theme (Project): | R - Vorhaben Exploration des Sonnensystems | ||||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||||
Institutes and Institutions: | Institute of Planetary Research > Planetary Geodesy Institute of Planetary Research > Planetary Geology | ||||||||||||||||||
Deposited By: | Giese, Dr.rer.nat. Bernd | ||||||||||||||||||
Deposited On: | 20 Sep 2017 11:16 | ||||||||||||||||||
Last Modified: | 31 Jul 2019 20:10 |
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