منابع مشابه
Space weathering on airless planetary bodies: clues from the lunar mineral hapkeite.
Physical and chemical reactions occurring as a result of the high-velocity impacts of meteorites and micrometeorites and of cosmic rays and solar-wind particles are major causes of space weathering on airless planetary bodies, such as the Moon, Mercury, and asteroids. These weathering processes are responsible for the formation of their regolith and soil. We report here the natural occurrence o...
متن کاملMineralogical and chemical characterization of lunar highland soils: Insights into the space weathering of soils on airless bodies
[1] With reflectance spectroscopy, one is measuring only properties of the fine-grained regolith most affected by space weathering. The Lunar Soil Characterization Consortium has undertaken the task of coordinated characterization of lunar soils, with respect to their mineralogical and chemical makeup. It is these lunar soils that are being used as ‘‘ground truth’’ for all airless bodies. Modal...
متن کاملSulfur Compositional Effects on Space Weathering
The reflectance spectrum of visible and near infrared light off of airless bodies in our Solar System gives us insight to surface mineralogy. However, this method of remote sensing is subjected to the space weathering effects of darkening and reddening optical spectra, along with changes to the depths of absorption bands over time. These optical changes are caused by nanophase iron blebs as a r...
متن کاملOn the average temperature of airless spherical bodies and the magnitude of Earth’s atmospheric thermal effect
The presence of atmosphere can appreciably warm a planet's surface above the temperature of an airless environment. Known as a natural Greenhouse Effect (GE), this near-surface Atmospheric Thermal Enhancement (ATE) as named herein is presently entirely attributed to the absorption of up-welling long-wave radiation by greenhouse gases. Often quoted as 33 K for Earth, GE is estimated as a differe...
متن کاملSurvival times of meter-sized rock boulders on the surface of airless bodies
Rock boulders are typical features of the surfaces of many airless bodies, so the possibility of estimating their potential survival times may provide insights into the rates of surface-modification processes. As an opening point of this study we employ estimates of the survival times of meter-sized boulders on the surface of the Moon based on analysis of the spatial density of boulders on the ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Planets
سال: 2016
ISSN: 2169-9097
DOI: 10.1002/2016je005128