Precipitation-induced surface brightenings seen on Titan by Cassini VIMS and ISS
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- 作者：Jason W Barnes (1)
Bonnie J Buratti (2)
Elizabeth P Turtle (13)
Jacob Bow (1)
Paul A Dalba (2) (3)
Jason Perry (5)
Robert H Brown (5)
Sebastien Rodriguez (10)
Stéphane Le Mouélic (8)
Kevin H Baines (15)
Christophe Sotin (2)
Ralph D Lorenz (13)
Michael J Malaska (2)
Thomas B McCord (4)
Roger N Clark (6)
Ralf Jaumann (12)
Paul O Hayne (7)
Philip D Nicholson (9)
Jason M Soderblom (14)
Laurence A Soderblom (11) - 关键词：Titan ; Atmosphere ; Titan ; Hydrology
- 刊名：Planetary Science
- 出版年：2013
- 出版时间：December 2013
- 年：2013
- 卷：2
- 期：1
- 全文大小：1521KB
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Bonnie J Buratti (2)
Elizabeth P Turtle (13)
Jacob Bow (1)
Paul A Dalba (2) (3)
Jason Perry (5)
Robert H Brown (5)
Sebastien Rodriguez (10)
Stéphane Le Mouélic (8)
Kevin H Baines (15)
Christophe Sotin (2)
Ralph D Lorenz (13)
Michael J Malaska (2)
Thomas B McCord (4)
Roger N Clark (6)
Ralf Jaumann (12)
Paul O Hayne (7)
Philip D Nicholson (9)
Jason M Soderblom (14)
Laurence A Soderblom (11)
1. Department of Physics, University of Idaho, Moscow, Idaho, 83844-0903, USA
2. Jet Propulsion Laboratory, Caltech, Pasadena, California, 91109, USA
13. Johns Hopkins University Applied Physics Laboratory, Laurel, MD, 20723, USA
3. University of California, Berkeley, California, 94720, USA
5. Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona, 85721, USA
10. Laboratoire AIM, Université Paris Diderot / CEA Irfu / CNRS, Centre de l’orme des Mérisiers, bat. 709, 91191, Gif/Yvette Cedex, France
8. Laboratoire de Planétologie et Géodynamique, CNRS UMR6112, Université de Nantes, Nantes, France
15. Space Science and Engineering Center, University of Wisconsin, Madison, WI, 53706, USA
4. Bear Fight Institute, Winthrop, Washington, 98862, USA
6. United States Geological Survey, Denver, Colorado, 80225, USA
12. DLR, Institute of Planetary Research, 12489, Berlin, Germany
7. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, 91126, USA
9. Department of Astronomy, Cornell University, Ithaca, NY, 14853, USA
14. Department of Earth and Atmospheric Science, Massachusetts Institute of Technology, Cambridge, MA, 02141, USA
11. Astrogeology Division, United States Geological Survey, Flagstaff, Arizona, 86001, USA - ISSN：2191-2521
文摘
Observations from Cassini VIMS and ISS show localized but extensive surface brightenings in the wake of the 2010 September cloudburst. Four separate areas, all at similar latitude, show similar changes: Yalaing Terra, Hetpet Regio, Concordia Regio, and Adiri. Our analysis shows a general pattern to the time-sequence of surface changes: after the cloudburst the areas darken for months, then brighten for a year before reverting to their original spectrum. From the rapid reversion timescale we infer that the process driving the brightening owes to a fine-grained solidified surface layer. The specific chemical composition of such solid layer remains unknown. Evaporative cooling of wetted terrain may play a role in the generation of the layer, or it may result from a physical grain-sorting process.