Alteration of volatile inventories by polar clathrate formation on Mars [0.03%]
火星上极地包覆物的形成对挥发份容积的改变
D Musselwhite,J I Lunine
D Musselwhite
Recent models of chaotic variation in the Martian obliquity suggest that CO2 could be released during times of high obliquity and then recaptured in the polar caps as ice or clathrate during times of lower obliquity (Jakosky, et al., 1995)....
Influx of cometary volatiles to planetary moons: the atmospheres of 1000 possible Titans [0.03%]
彗星物质注入行星卫星：千颗可能的泰坦星的大气
C A Griffith,K Zahnle
C A Griffith
We use a Monte Carlo model to simulate impact histories of possible Titans, Callistos, and Ganymedes. Comets create or erode satellite atmospheres, depending on their mass and velocity distributions: faster and bigger comets remove atmophil...
P Geissler,W R Thompson,R Greenberg et al.
P Geissler et al.
Nearly 6000 multispectral images of Earth were acquired by the Galileo spacecraft during its two flybys. The Galileo images offer a unique perspective on our home planet through the spectral capability made possible by four narrowband near-...
D W Clarke,J P Ferris
D W Clarke
The role of cyanoacetylene (HC3N) in the atmospheric photochemistry of Titan and its relevance to polymer formation are discussed. Investigation of the relative light absorption of HC3N, acetylene (C2H2), and diacetylene (C4H2) revealed tha...
G D Badhwar
G D Badhwar
A portion of the secular change of the geomagnetic field leads to a drift of the trapped belt South Atlantic Anomaly (SAA). If this drift is not taken into account, models of the trapped particle population give erroneous predictions of par...
Y Jiang,Y L Yung,R W Zurek
Y Jiang
Ozone column amounts obtained by the total ozone mapping spectrometer (TOMS) in the southern polar region are analyzed during late austral winter and spring (days 240-300) for 1980-1991 using area-mapping techniques and area-weighted vortex...
Ground-based detectability of terrestrial and Jovian extrasolar planets: observations of CM Draconis at Lick Observatory [0.03%]
地基探测太阳系外类地和类木行星的能力：对龙飞座CM双星系统的观测结果
L R Doyle,E T Dunham,H J Deeg et al.
L R Doyle et al.
The detection of terrestrial-sized extrasolar planets from the ground has been thought to be virtually impossible due to atmospheric scintillation limits. However, we show that this is not the case especially selected (but nevertheless main...
A Banin,T Ben-Shlomo,L Margulies et al.
A Banin et al.
A series of surface-modified clays containing nanophase (np) iron oxide/oxyhydroxides of extremely small particle sizes, with total iron contents as high as found in Mars soil, were prepared by iron deposition on the clay surface from ferro...
Hydrogen and deuterium loss from the terrestrial atmosphere: a quantitative assessment of nonthermal escape fluxes [0.03%]
地壳大气中的氢和氘损失：非热逃逸通量的定量评估
Y L Yung,J S Wen,J I Moses et al.
Y L Yung et al.
A comprehensive one-dimensional photochemical model extending from the middle atmosphere (50 km) to the exobase (432 km) has been used to study the escape of hydrogen and deuterium from the Earth's atmosphere. The model incorporates recent ...
Photochemistry of CO and H2O: analysis of laboratory experiments and applications to the prebiotic Earth's atmosphere [0.03%]
CO和H2O的光化学：实验室实验分析及地球前生命期大气圈中的应用
J S Wen,J P Pinto,Y L Yung
J S Wen
The role photochemical reactions in the early Earth's atmosphere played in the prebiotic synthesis of simple organic molecules was examined. We have extended an earlier calculation of formaldehyde production rates to more reduced carbon spe...