Fuente: New NASA STI
Expuesto el: miércoles, 26 de septiembre de 2012 23:00
Autor: New NASA STI
Asunto: Tidal Control of Jet Eruptions on Enceladus as Observed by Cassini ISS between 2005 and 2007
| Title: | Tidal Control of Jet Eruptions on Enceladus as Observed by Cassini ISS between 2005 and 2007 |
| Online Source: | Click to View PDF File[PDF Size: 387 KB] |
| Author: | Hurford, T. A.; Helfenstein, P.; Spitale, J. N. |
| Abstract: | Observations of Enceladus have revealed active jets of material erupting from cracks on its south polar surface. It has previously been proposed that diurnal tidal stress, driven by Enceladus' orbital eccentricity, may actively produce surface movement along these cracks daily and thus may regulate when eruptions occur. Our analysis of the stress on jet source regions identified in Cassini ISS images reveals tidal stress as a plausible controlling mechanism of jet activity. However, the evidence available in the published and preliminary observations of jet activity between 2005 and 2007 may not be able to solidify the link between tidal stress and eruptions from fissures. Ongoing, far more comprehensive analyses based on recent, much higher resolution jetting observations have the potential to prove otherwise. |
| Collection: | NASA |
| NASA Center: | Goddard Space Flight Center |
| Publication Date: | June 23, 2012 |
| Publication Year: | 2012 |
| Document ID: | 20120014166 |
| Subject Category: | GEOSCIENCES (GENERAL) |
| Report/Patent Number: | GSFC.JA.6861.2012 |
| Publication Information: | Icarus; Volume 220; Issue 2; 896-903; Number of pages = 8 |
| Language: | English |
| Subject Terms: | CASSINI MISSION; CRACKING (FRACTURING); DEFORMATION; DIURNAL VARIATIONS; ECCENTRICITY; ENCELADUS; INTERNATIONAL SPACE STATION; JET CONTROL; OBSERVATION; POLAR REGIONS; SHEAR STRESS; STRUCTURAL STRAIN; TIDES; VOLCANIC ERUPTIONS |
| Accessibility: | Unclassified; Publicly available; Unlimited; Copyright, Distribution as joint owner in the copyright |
| Document Source: | CASI |
| Updated/Added to NTRS: | Sep 27, 2012 |
