Transient surface liquid in Titan's polar regions from Cassini

Icarus

Volumn 211, Issue 1, 2011, Pages 655-671

  Hayes, A G ^a   Aharonson, O ^a   Lunine, J I ^b   Kirk, R L ^c   Zebker, H A ^e   Wye, L C ^e   Lorenz, R D ^d   Turtle, E P ^d   Paillou, P ^f   Mitri, G ^a   Wall, S D ^g   Stofan, E R ^h   Mitchell, K L ^g   Elachi, C ^g  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

^b UNIVERSITY OF ROME TOR VERGATA   (Italy)

^c U S GEOLOGICAL SURVEY   (United States)

^d JOHNS HOPKINS UNIVERSITY APPLIED PHYSICS LABORATORY   (United States)

^e Stanford University   (United States)

^f UNIVERSITÉ DE BORDEAUX   (France)

^g CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

^h Proxemy Research Inc   (United States)

Author keywords

Infrared observations; Radar observations; Saturn, Satellites; Titan

Indexed keywords

EID: 78650933367     PISSN: 00191035     EISSN: 10902643     Source Type: Journal    
DOI: 10.1016/j.icarus.2010.08.017     Document Type: Article

References (71)

1. Aharonson O., Hayes A.G., Lunine J.I., Lorenz R.D., Allison M.D., Elachi C. An asymmetric distribution of lakes on Titan as a possible consequence of orbital forcing. Nature Geosci. 2009, 2:851-854. 10.1038/ngeo698.
2. Barnes, J.W., and 14 colleagues, 2009. Shoreline features of Titan's Ontario Lacus from Cassini/VIMS observations. Icarus 201, 217-225. doi:10.1016/j.icarus.2008.12.028.
3. Barnes, J.W., and 12 colleagues, submitted for publication. Wave constraints for Titan's Jingpo Lacus and Kraken Mare from VIMS Specular Reflection Lightcurves. Icarus.
4. Barthel J., Buchner R. High frequency permittivity and its use in the investigation of solution properties. Pure Appl. Chem. 1991, 63:1473-1482.
5. Beckmann P., Spizzichino A. The Scattering of Electromagnetic Waves from Rough Surfaces 1963, Artech House, Inc., Norwood, MA, 511pp.
6. Black G.J., Campbell D.B., Nicholson P.D. Icy Galilean satellites: Modeling radar reflectivities as a coherent backscatter effect. Icarus 2001, 151:167-180. 10.1006/icar.2001.6616.
7. Brown R.H., Soderblom L.A., Soderblom J.M., Clark R.N., Jaumann R., Barnes J.W., Sotin C., Buratti B., Baines K.H., Nicholson P.D. The identification of liquid ethane in Titan's Ontario Lacus. Nature 2008, 454:607-610. 10.1038/nature07100.
8. Brown M.E., Smith A.L., Chen C., Ádámkovics M. Discovery of fog at the south pole of Titan. Astrophys. J. 2009, 706:L110-L113. 10.1088/0004-637X/706/1/L110.
9. Brown R., Lebreton J.P., Hunter W. Titan from Cassini-Huygens 2010, Springer, ISBN:9781402092145.
10. Campbell D.B., Black G.J., Carter L.M., Ostro S.J. Radar evidence for liquid surfaces on Titan. Science 2003, 302:431-434. 10.1126/science.1088969.
11. Cordier D., Mousis O., Lunine J.I., Lavvas P., Vuitton V. An estimate of the chemical composition of Titan's lakes. Astrophys. J. 2009, 707:L128-L131. 10.1088/0004-637X/707/2/L128.
12. Daniels F.B. A theory of radar reflection from the Moon and planets. J. Geophys. Res. 1961, 66:1781-1788. 10.1029/JZ066i006p01781.
13. Dobson M.C., Ulaby F.T., Hallikainen M.T., El-Rayes M.A. Microwave dielectric behavior of wet soil - Part ii: Dielectric mixing models. Geosci. Rem. Sens., IEEE Trans. 1985, GE23(1):35-46. ISSN:0196-2892. 10.1109/TGRS.1985.289498.
14. Elachi C., van Zyl J. Introduction to the Physics and Techniques of Remote Sensing 2006, John Wiley, ISBN:100471475696. second ed.
15. Elachi, C., and 34 colleagues, 2005. Cassini RADAR views the surface of Titan. Science 308, 970-974. doi:10.1126/science.1109919.
16. Fairall C.W., Bradley E.F., Rogers D.P., Edson J.B., Young G.S. Bulk parameterization of air-sea fluxes for tropical ocean-global atmosphere coupled-ocean atmosphere response experiment. J. Geophys. Res. 1996, 101:3747-3764. 10.1029/95JC03205.
17. Grard, R., and 19 colleagues, 2006. Electric properties and related physical characteristics of the atmosphere and surface of Titan. Planet. Space Sci. 54, 1124-1136. doi:10.1016/j.pss.2006.05.036.
18. Graves, S.D., Schneider, T., Schaller, E.L., Brown, M.E., in preparation. Causes of Titan's lake asymmetry and cloud distribution and prediction of future changes. Nature Geosci.
19. Hagfors T. Backscattering from an undulating surface with applications to radar returns from the Moon. J. Geophys. Res. 1964, 69:3779-3784. 10.1029/JZ069i018p03779.
20. Hagfors T. Remote probing of the Moon by infrared and microwave emission and by radar. Radio Sci. 1970, 5:189-227. 10.1029/RS005i002p00189.
21. Hargreaves, J.K., 1959. Radio observations of the lunar surface. In: Proceedings of the Physical Society of London, May 1959, pp. 536-537.
22. Hasselmann, K., and 20 colleagues, 1978. Radar measurements of wind and waves. Boundary-Layer Meteorol. 13, 405-412. doi:10.1007/BF00913885.
23. Hayes, A.G., and 13 colleagues, 2008. Hydrocarbon lakes on Titan: Distribution and interaction with a porous regolith. Geophys. Res. Lett. 35, 9204-9208. doi:10.1029/2008GL033409.
24. Hayes, A.G., Wolf, A.S., Aharonson, O., Zebker, H., Lorenz, R., Paillou, P., Wall, S., Elachi, C., in press. Bathymetry and absorptivity of Titan's Ontario Lacus. J. Geophys. Res., in press. doi:10.1029/2009JE003557.
25. Iess L., Rappaport N.J., Jacobson R.A., Racioppa P., Stevenson D.J., Tortora P., Armstrong J.W., Asmar S.W. Gravity field, shape, and moment of inertia of Titan. Science 2010, 327:1367-1369. 10.1126/science.1182583.
26. Janssen, M.A., 17 colleagues, and the Cassini RADAR Team, 2009. Titan's surface at 2.2-cm wavelength imaged by the Cassini RADAR radiometer: Calibration and first results. Icarus 200, 222-239. doi:10.1016/j.icarus.2008.10.017.
27. Jennings, D.E., and 19 colleagues, 2009. Titan's surface brightness temperatures. Astrophys. J. 691, L103-L105. doi:10.1088/0004-637X/691/2/L103.
28. Kirk, R.L., 16 colleagues, and the Cassini RADAR Team, submitted for publication. High resolution topographic models of Titan's surface derived by radar stereogrammetry with a rigorous sensor model. Icarus 112.
29. Le Gall, A., Janssen, M.A., Paillou, P., Lorenz, R.D., Wall, S.D., and the Cassini RADAR Team, 2010. Radar-bright channels on Titan. Icarus 207, 948-958. doi:10.1016/j.icarus.2009.12.027.
30. Lopes, R.M.C., 24 colleagues, and Cassini RADAR Team, 2010. Distribution and interplay of geologic processes on Titan from Cassini RADAR data. Icarus 205, 540-558. doi:10.1016/j.icarus.2009.08.010.
31. Lorenz R.D. Crater lakes on Titan: Rings, horseshoes and bullseyes. Planet. Space Sci. 1994, 42:1-4. doi:10.1016/0032-0633(94)90134-1.
32. Lorenz R.D., Niemann H.B., Harpold D.N., Way S.H., Zarnecki J.C. Titan's damp ground: Constraints on Titan surface thermal properties from the temperature evolution of the Huygens GCMS inlet. Meteorit. Planet. Sci. 2006, 41:1705-1714.
33. Lorenz R.D., Jackson B., Hayes A. Racetrack and Bonnie Claire: Southwestern US playa lakes as analogs for Ontario Lacus, Titan. Planet. Space Sci. 2010, 58:724-731. 10.1016/j.pss.2009.05.012.
34. Lorenz R.D., Newman C., Lunine J.I. Threshold of wave generation on Titan's lakes and seas: Effect of viscosity and implications for Cassini observations. Icarus 2010, 207:932-937. 10.1016/j.icarus.2009.12.004.
35. Lunine J.I. Does Titan have an ocean? A review of current understanding of Titan's surface. Rev. Geophys. 1993, 31:133-149. 10.1029/92RG02794.
36. Mitchell J.L. The drying of Titan's dunes: Titan's methane hydrology and its impact on atmospheric circulation. J. Geophys. Res. (Planets) 2008, 113(E8015):1-22. 10.1029/2007JE003017.
37. Mitchell, K.L., 10 colleagues, and the Cassini RADAR Team, in preparation. Titan's north polar lake district: Insights from the Cassini Titan Radar Mapper. Icarus.
38. Mitri G., Showman A.P., Lunine J.I., Lorenz R.D. Hydrocarbon lakes on Titan. Icarus 2007, 186:385-394. 10.1016/j.icarus.2006.09.004.
39. Muhleman D.O. Earth-based remote sensing of Solar System objects. Rev. Geophys. 1995, 33:477-480. 10.1029/95RG00555.
40. Newman, C.E., Richardson, M.I., Lee, C., Toigo, A.D., Ewald, S.P., 2008. The TitanWRF model at the end of the Cassini Prime Mission. AGU Fall Meeting, p. A2 (abstracts).
41. Ostro, S.J., and 11 colleagues, 1992. Europa, Ganymede, and Callisto: New radar results from Arecibo and Goldstone. J. Geophys. Res. 97, 18277-18244.
42. Ostro, S.J., 18 colleagues, and the Cassini RADAR Team, 2006. Cassini RADAR observations of Enceladus, Tethys, Dione, Rhea, Iapetus, Hyperion, and Phoebe. Icarus 183, 479-490. doi:10.1016/j.icarus.2006.02.019.
43. Paillou P., Lunine J., Ruffié G., Encrenaz P., Wall S., Lorenz R., Janssen M. Microwave dielectric constant of Titan-relevant materials. Geophys. Res. Lett. 2008, 35(L18202):1-4. 10.1029/2008GL035216.
44. Paillou, P., Mitchell, K., Wall, S., Ruffié, G., Wood, C., Lorenz, R., Stofan, E., Lunine, J., Lopes, R., Encrenaz, P., 2008b. Microwave dielectric constant of liquid hydrocarbons: Application to the depth estimation of Titan's lakes. Geophys. Res. Lett. 35, L05202, 1-5. doi:10.1029/2007GL032515.
45. Pierson W.J., Moskowitz L. A proposed spectral form for fully developed wind seas based on the similarity theory of S.A. Kitaigorodskii. J. Geophys. Res. 1964, 69:5181-5190. 10.1029/JZ069i024p05181.
46. Pollack J.B., Cuzzi J.N. Scattering by nonspherical particles of size comparable to wavelength - A new semi-empirical theory and its application to tropospheric aerosols. J. Atmos. Sci. 1980, 37:868-881. doi:10.1175/1520-0469(1980)037.
47. Press William, Flannery Brian, Teukolsky Saul, Vetterling William Numerical Recipes in C: The Art of Scientific Computing 1992, Cambridge University Press, ISBN:0521431085.
48. Rice S.O. Small perturbation method. Commun. Pure Appl. Math. 1951, 4:251-378.
49. Richardson M., Toigo A., Newman C. PlanetWRF: A general purpose, local to global numerical model for planetary atmospheric and climate dynamics. J. Geophys. Res. 2007, 112(E09001):1-29.
50. Rignot E.J., Ostro S.J., van Zyl J.J., Jezek K.C. Unusual radar echoes from the Greenland Ice sheet. Science 1993, 261:1710-1713.
51. Saravanapavan S.O. Molecular diffusivity. Commun. Pure Appl. Math. 2000, 4:251-378.
52. Sen A.D., Anicich V.G., Arakelian T. Dielectric constant of liquid alkanes and hydrocarbon mixtures. J. Appl. Phys. 1992, 25:512-521.
53. Simpson R.A., Tyler G.L. Radar scattering laws for the lunar surface. IEEE Trans. Antennas Propagation 1982, 30:438-449. 10.1109/TAP.1982.1142803.
54. Stiles, B.W., 18 colleagues, and the Cassini RADAR Team, 2009. Determining Titan surface topography from Cassini SAR data. Icarus 202, 584-598. doi:10.1016/j.icarus.2009.03.032.
55. Stofan, E.R., and 37 colleagues, 2007. The lakes of Titan. Nature 445, 61-64. doi:10.1038/nature05438.
56. Stofan, E.R., 14 colleagues, and Cassini RADAR Team, 2008. Varied geologic terrains at Titan's south pole: First results from T39. In: Lunar and Planetary Institute Science Conference, vol. 39, p. 1491 (abstracts).
57. Sultan-Salem A.K., Tyler G.L. Generalized fractal-based laws for scattering from planetary surfaces: A unifying scale-explicit paradigm. J. Geophys. Res. (Planets) 2006, 111(E06S08):1-6. 10.1029/2005JE002540.
58. Thompson W.R., Squyres S.W. Titan and other icy satellites - Dielectric properties of constituent materials and implications for radar sounding. Icarus 1990, 86:336-354. doi:10.1016/0019-1035(90)90224-W.
59. Tokano T. Limnological structure of Titan's hydrocarbon lakes and its astrobiological implication. Astrobiology 2009, 9:147-164. 10.1089/ast.2007.0220.
60. Tokano T. Impact of seas/lakes on polar meteorology of Titan: Simulation by a coupled GCM-Sea model. Icarus 2009, 204:619-636. 10.1016/j.icarus.2009.07.032.
61. Turtle E.P., Perry J.E., McEwen A.S., DelGenio A.D., Barbara J., West R.A., Dawson D.D., Porco C.C. Cassini imaging of Titan's high-latitude lakes, clouds, and south-polar surface changes. Geophys. Res. Lett. 2009, 36:L2204. 10.1029/2008GL036186.
62. Turtle, E.P., Perry, J.E., Hayes, A.G., McEwen, A.S. Shoreline retreat at Titan's Ontario Lacus and Arrakis Planitia from Cassini Imaging Science subsystem observations. Icarus. submitted for publication.
63. Tyler G.L., Simpson R.A., Maurer M.J., Holmann E. Scattering properties of the Venusian surface - Preliminary results from Magellan. J. Geophys. Res. 1992, 97(13):115-139.
64. Ulaby, F.T., Moore, R.K., Fung, A.K., 1982. In: Ulaby, F.T. (Ed.), Microwave Remote Sensing: Active and Passive, vol. 2. Artech House, Norwood, MA.
65. Wall, S., and 20 colleagues, 2010. Active shoreline of Ontario Lacus, Titan: A morphological study of the lake and its surroundings. Geophys. Res. Lett. 37, L5202. doi:10.1029/2009GL041821.
66. West, R.D., and 19 colleagues, 2008. Cassini RADAR sequence planning and instrument performance. IEEE Trans. Geosci. Rem. Sens., pp. 1777-1795. doi:10.1109/TGARS.2008.2007217.
67. Wye, L.C., Zebker, H.A., Ostro, S.J., West, R.D., Gim, Y., Lorenz, R.D., and the Cassini RADAR Team, 2007. Electrical properties of Titan's surface from Cassini RADAR scatterometer measurements. Icarus 188, 367-385. doi:10.1016/j.icarus.2006.12.008.
68. Wye, L.C., Zebker, H.A., Lopes, R.M., Peckyno, R., Le Gall, A., Janssen, M.A., 2008. Surface parameters of Titan feature classes from Cassini RADAR backscatter measurements. AGU Fall Meeting, p. A1318 (abstracts).
69. Wye L.C., Zebker H.A., Lorenz R.D. Smoothness of Titan's Ontario Lacus: Constraints from Cassini RADAR specular reflection data. Geophys. Res. Lett. 2009, 36:L16201. 10.1029/2009GL039588.
70. Zarnecki, J.C., and 25 colleagues, 2005. A soft solid surface on Titan as revealed by the Huygens Surface Science Package. Nature 438, 792-795. doi:10.1038/nature04211.
71. Zebker H.A., Stiles B., Hensley S., Lorenz R., Kirk R.L., Lunine J. Size and shape of Saturn's moon Titan. Science 2009, 324:921-923. 10.1126/science.1168905.