Alluvial and fluvial fans on Saturn's moon Titan reveal processes, materials and regional geology
| Autor: | Tom G. Farr, Dario Ventra, Jani Radebaugh, Alexander G. Hayes, Samuel Birch, Jason W. Barnes, Philippe Paillou, Alice Le Gall, Rosaly M. C. Lopes, S. D. Wall, Ellen R. Stofan, Ralph D. Lorenz, Zac Yung-Chun Liu, Jonathan I. Lunine, R. L. Kirk, Michael Malaska |
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| Přispěvatelé: | Brigham Young University (BYU), Utrecht University [Utrecht], Johns Hopkins University Applied Physics Laboratory [Laurel, MD] (APL), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Astrogeology Science Center [Flagstaff], United States Geological Survey [Reston] (USGS), Department of Astronomy [Ithaca], Cornell University [New York], School of Earth and Space Exploration [Tempe] (SESE), Arizona State University [Tempe] (ASU), University of Idaho [Moscow, USA], PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Proxemy Research Inc, ASP 2015, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2016 |
| Předmět: |
Regional geology
geography geography.geographical_feature_category [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] 010504 meteorology & atmospheric sciences Landform Alluvial fan Fluvial Geology Ocean Engineering 01 natural sciences Sedimentary depositional environment symbols.namesake 13. Climate action 0103 physical sciences symbols Alluvium Sedimentary rock Titan (rocket family) 010303 astronomy & astrophysics Geomorphology 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | The Geological Society, London, Special Publications The Geological Society, London, Special Publications, Geological Society of London, 2018, 440 (1), pp.281-305. ⟨10.1144/SP440.6⟩ |
| ISSN: | 2041-4927 0305-8719 |
| DOI: | 10.1144/sp440.6 |
| Popis: | International audience; Fans, landforms that record the storage and transport of sediment from uplands to depositional basins, are found on Saturn's moon Titan, a body of significantly different process rates and material compositions from Earth. Images obtained by the Cassini spacecraft's synthetic aperture radar reveal morphologies, roughness, textural patterns and other properties consistent with fan analogues on Earth also viewed by synthetic aperture radar. The observed fan characteristics on Titan reveal some regions of high relative relief and others with gentle slopes over hundreds of kilometres, exposing topographic variations and influences on fan formation. There is evidence for a range of particle sizes across proximal to distal fan regions, from c. 2 cm or more to fine-grained, which can provide details on sedimentary processes. Some features are best described as alluvial fans, which implies their proximity to high-relief source areas, while others are more likely to be fluvial fans, drawing from larger catchment areas and frequently characterized by more prolonged runoff events. The presence of fans corroborates the vast liquid storage capacity of the atmosphere and the resultant episodic behaviour. Fans join the growing list of landforms on Titan derived from atmospheric and fluvial processes similar to those on Earth, strengthening comparisons between these two planetary bodies. |
| Databáze: | OpenAIRE |
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