تقرير
Charon: A Brief History of Tides
| العنوان: | Charon: A Brief History of Tides |
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| المؤلفون: | Alyssa Rose Rhoden, Helle L. Skjetne, Wade G. Henning, Terry A. Hurford, Kevin J. Walsh, S. A. Stern, C. B. Olkin, J. R. Spencer, H. A. Weaver, Leslie A. Young, Kimberly Ennico |
| المصدر: | Journal of Geophysical Research: Planets. 125(7) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Geophysics, Exobiology |
| الوصف: | In 2015, the New Horizons spacecraft flew past Pluto and its moon Charon, providing the first clear look at Charon's surface. New Horizons images revealed an ancient surface, a large, intricate canyon system, and many fractures, among other geologic features. Here, we assess whether tidal stresses played a significant role in the formation of Charon's tensile fractures. Although presently in a circular orbit, most scenarios for Charon's orbital evolution include an eccentric orbit for some period of time and possibly an internal ocean. Past work has shown that these conditions could have generated stresses comparable in magnitude to other tidally fractured moons, such as Europa and Enceladus. However, we find no correlation between observed fracture orientations and those predicted to form due to eccentricity driven tidal stress. It, thus, seems more likely that Charon's orbit circularized before its ocean froze and that either tidal stresses alone were insufficient to fracture the surface or subsequent resurfacing removed these ancient fractures. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 2169-9100 2169-9097 |
| DOI: | 10.1029/2020JE006449 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20210011478 |
| ملاحظات: | 432938.11.01.04.01.01.06 |
| رقم الأكسشن: | edsnas.20210011478 |
| قاعدة البيانات: | NASA Technical Reports |
Full Text Finder | تدمد: | 21699100 21699097 |
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| DOI: | 10.1029/2020JE006449 |