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作者:José Luis Alvarellos , Anthony R. Dobrovolskis , Kevin J. Zahnle ...
来源:[J].Icarus(IF 3.161), 2017, Vol.284, pp.70-89Elsevier
摘要:Abstract(#br)We assess the fates of ejecta from the large craters Aeneas on Dione and Ali Baba on Enceladus (161 and 39 km in diameter, respectively), as well as that from Herschel (130 km in diameter) on Mimas. The ejecta are treated either as ‘spalls’ launched from hard su...
作者:Benoît Noyelles
来源:[J].Icarus(IF 3.161), 2017, Vol.282, pp.276-289Elsevier
摘要:Abstract(#br)Most of the main planetary satellites of our Solar System are expected to be in synchronous rotation, the departures from the strict synchronicity being a signature of the interior. Librations have been measured for the Moon, Phobos, and some satellites of Saturn. I ...
作者:ZhenLiang Tian , Jack Wisdom , Linda Elkins-Tanton
来源:[J].Icarus(IF 3.161), 2017, Vol.281, pp.90-102Elsevier
摘要:Abstract(#br)Several new scenarios of the Moon-forming giant impact have been proposed to reconcile the giant impact theory with the recent recognition of the volatile and refractory isotopic similarities between Moon and Earth. Two scenarios leave the post-impact Earth spinning ...
作者:Donna Viola , Alfred S. McEwen , Colin M. Dundas ...
来源:[J].Icarus(IF 3.161), 2017, Vol.284, pp.325-343Elsevier
摘要:Abstract(#br)Excess ice is widespread throughout the martian mid-latitudes, particularly in Arcadia Planitia, where double-layer ejecta (DLE) craters also tend to be abundant. In this region, we observe the presence of thermokarstically-expanded secondary craters that likely form...
作者:S. De Angelis , C. Carli , F. Tosi ...
来源:[J].Icarus(IF 3.161), 2017, Vol.281, pp.444-458Elsevier
摘要:Abstract(#br)We investigate two poly-hydrated magnesium sulfates, hexahydrite (MgSO 4 · 6H 2 O) and epsomite (MgSO 4 · 7H 2 O), in the visible and infrared (VNIR) spectral range 0.5/4.0 µm, as particulate for three different grain size ranges: 20–50 µm, 75–100 µm and 12...
作者:Nicholas A. Moskovitz , David Polishook , Francesca E. DeMeo ...
来源:[J].Icarus(IF 3.161), 2017, Vol.284, pp.97-105Elsevier
摘要:Abstract(#br)Here we explore a technique for constraining physical properties of near-Earth asteroids (NEAs) based on variability in thermal emission as a function of viewing aspect. We present case studies of the low albedo, near-Earth asteroids (285263) 1998 QE2 and (17570...
作者:C. Lantz , R. Brunetto , M.A. Barucci ...
来源:[J].Icarus(IF 3.161), 2017, Vol.285, pp.43-57Elsevier
摘要:Abstract(#br)We present an experimental study on ion irradiation of carbonaceous chondrites, simulating solar wind irradiation on primitive asteroids, to better constrain the space weathering processes of low albedo objects. The irradiations were performed on pressed pellets...
作者:S. Noda , M. Ishiwatari , K. Nakajima ...
来源:[J].Icarus(IF 3.161), 2017, Vol.282, pp.1-18Elsevier
摘要:Abstract(#br)In order to investigate a possible variety of atmospheric states realized on a synchronously rotating aquaplanet, an experiment studying the impact of planetary rotation rate is performed using an atmospheric general circulation model (GCM) with simplified hydro...
作者:Colin M. Dundas
来源:[J].Icarus(IF 3.161), 2017, Vol.281, pp.115-120Elsevier
摘要:Abstract(#br)Scalloped depressions in the Martian mid-latitudes are likely formed by sublimation of ice-rich ground. The stability of subsurface ice changes with the planetary obliquity, generally becoming less stable at lower axial tilt. As a result, the relative rates of sublim...
作者:Kunio M. Sayanagi , John J. Blalock , Ulyana A. Dyudina ...
来源:[J].Icarus(IF 3.161), 2017, Vol.285, pp.68-82Elsevier
摘要:Abstract(#br)We present analyses of Saturn’s north pole using high-resolution images captured in late 2012 by the Cassini spacecraft’s Imaging Science Subsystem (ISS) camera. The images reveal the presence of an intense cyclonic vortex centered at the north pole. In the red ...

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