Výsledky vyhledávání

Observational evidence for active dust storms on Titan at equinox

Publikováno v: Nature Geoscience
Nature Geoscience, Nature Publishing Group, 2018, 11 (10), pp.727-732. ⟨10.1038/s41561-018-0233-2⟩
Nature Geoscience, vol 11, iss 10
NATURE GEOSCIENCE, vol 11, iss 10
Nature Geoscience, 2018, 11 (10), pp.727-732. ⟨10.1038/s41561-018-0233-2⟩

Saturn’s moon Titan has a dense nitrogen-rich atmosphere, with methane as its primary volatile. Titan’s atmosphere experiences an active chemistry that produces a haze of organic aerosols that settle to the surface and a dynamic climate in which

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d5b72f695b90f16c88f37e6a5cc5473
https://hal.archives-ouvertes.fr/hal-02331823

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Present-day seasonal gully activity in a south polar pit (Sisyphi Cavi) on Mars

Autor: T. Appéré, J. Raack, Ottaviano Ruesch, M. Vincendon, Harald Hiesinger, Dennis Reiss

Publikováno v: Icarus. 251:226-243

The large amount of multi-temporal high-resolution images acquired in the last few years offers the opportunity to identify morphological changes associated with recent geologic activity on the surface of Mars. In this study we focus on a single gull

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5bb3dadfc465f0e31a34233f58f3b41b
https://doi.org/10.1016/j.icarus.2014.03.040

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Searching for springtime zonal liquid interfacial water on Mars

Autor: T. Appéré, Ákos Kereszturi

Publikováno v: Icarus. 238:66-76

We analyzed the spatial and temporal characteristics of the surface temperature at the northern water ice annulus on Mars that is left behind the receding seasonal carbon dioxide cap in springtime. Using OMEGA hyperspectral images we show that water

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30e0e5696769d6f6ef16e0506a3d2ac7
https://doi.org/10.1016/j.icarus.2014.05.001

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Observations of the northern seasonal polar cap on Mars III: CRISM/HiRISE observations of spring sublimation

Autor: Candice Hansen, Klaus-Michael Aye, T. Appéré, Ganna Portyankina, Nicolas Thomas, Antoine Pommerol

Publikováno v: Icarus

We analyze a series of targeted CRISM and HiRISE observations of seven regions of interest at high latitudes in the Northern polar regions of Mars. These data allow us to investigate the temporal evolution of the composition of the seasonal ice cap d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4c61ac0b4d13f2ede2a73a05dbadb3e

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Winter and spring evolution of northern seasonal deposits on Mars from OMEGA on Mars Express

Autor: Brigitte Gondet, Yves Langevin, Antoine Pommerol, Jean-Pierre Bibring, Sylvain Douté, Bernard Schmitt, François Forget, T. Appéré, Aymeric Spiga

Publikováno v: Journal of Geophysical Research-Planets
Journal of Geophysical Research. Planets
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2011, 116 (5), pp.E05001. ⟨10.1029/2010JE003762⟩
Journal of Geophysical Research. Planets, 2011, 116 (5), pp.E05001. ⟨10.1029/2010JE003762⟩
Appere, T.; Schmitt, B.; Langevin, Y.; Doute, S.; Pommerol, A.; Forget, F.; Spiga, A.; Gondet, B.; Bibring, J.P. (2011). Winter and spring evolution of northern seasonal deposits on Mars from OMEGA on Mars Express. Journal of geophysical research, 116(E5) Washington, D.C.: American Geophysical Union 10.1029/2010JE003762

The OMEGA visible/near infrared imaging spectrometer on Mars Express has observed the retreat of the northern seasonal deposits during Martian year 27 28 from the period of maximum extension close to the northern winter solstice to the end of the ret

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d058bb88c12e9c03f055739889e79aff

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Sedimentation waves on the Martian North Polar Cap: Analogy with megadunes in Antarctica

Autor: Olivier Bourgeois, Sebastien Rodriguez, T. Appéré, C. Herny, Aymeric Spiga, Marion Massé, Isaac B. Smith, S. Carpy, S. Le Mouélic

Publikováno v: Earth and Planetary Science Letters
Earth and Planetary Science Letters, Elsevier, 2014, 403 (octobre), pp.56-66. ⟨10.1016/j.epsl.2014.06.033⟩
Earth and Planetary Science Letters, 2014, 403 (octobre), pp.56-66. ⟨10.1016/j.epsl.2014.06.033⟩

International audience; Complex interactions between katabatic winds and the cryosphere may lead to the formation of sedimentation waves at the surface of ice sheets. These have been first described and named snow megadunes in Antarctica. Here we use

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::376a300174fd67cdde136e91392c7f48
https://hal.archives-ouvertes.fr/hal-01087723

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Global mapping and characterization of Titan's dune fields with Cassini: correlation between RADAR and VIMS observations

Publikováno v: Icarus
Icarus, Elsevier, 2014, 230, pp.168-179. ⟨10.1016/j.icarus.2013.11.017⟩
Icarus, 2013, 230, pp.168-179. ⟨10.1016/j.icarus.2013.11.017⟩

Vast fields of linear dunes have been observed in the equatorial regions of Titan, Saturn’s largest moon. As the Cassini mission, in orbit around Saturn since July 2004 and extended until May 2017, carries on, the high-resolution coverage of Titan�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::174953b115bd7509d9a46ddb946d1fce
https://hal.archives-ouvertes.fr/hal-00911014

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Retrieving Atmospheric Dust Opacity on Mars by Imaging Spectroscopy at Large Angles

Autor: Sylvain Douté, X. Ceamanos, T. Appéré

We propose a new method to retrieve the optical depth of Martian aerosols (AOD) from OMEGA and CRISM hyperspectral imagery at a reference wavelength of 1 μ m . Our method works even if the underlying surface is completely made of minerals, correspon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94f92d4b40681d6f28372c1fb01a2971
http://arxiv.org/abs/1302.0690

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Akademický článek

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A TRANSMISSION SPECTRUM OF TITAN'S NORTH POLAR ATMOSPHERE FROM A SPECULAR REFLECTION OF THE SUN

Autor: Sebastien Rodriguez, Roger N. Clark, Jason W. Barnes, Stéphane Le Mouélic, Robert H. Brown, Philip D. Nicholson, Jason M. Soderblom, Kevin H. Baines, Christophe Sotin, Máté Ádámkovics, Bonnie J. Buratti, T. Appéré

Publikováno v: The Astrophysical Journal. 777:161

Cassini/VIMS T85 observations of a solar specular reflection off of Kivu Lacus (87.?4N 241.?1E) provide an empirical transmission spectrum of Titan's atmosphere. Because this observation was acquired from short range (33,000?km), its intensity makes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e700472e246ee32f9ad4210659bb3781
https://doi.org/10.1088/0004-637x/777/2/161

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