Dust charging and transport on airless planetary bodies
نویسندگان
چکیده
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 کاملAutonomous Lunar Dust Observer for the Systematic Study of Natural and Anthropogenic Dust Phenomena on Airless Bodies
Introduction: Most of the lunar surface is covered with a thick layer of regolith composed of rock fragments and dust that have evolved through billions of years of constant destructive meteoroid bombardment. From the Apollo mission experiences, it is clear that long term lunar surface experiments and human activities, as anticipated for the Constellation program, must necessarily deal with the...
متن کاملDust-Dust Collisional Charging and Lightning in Protoplanetary Discs
We study the role of dust-dust collisional charging in protoplanetary discs. We show that dust-dust collisional charging becomes an important process in determining the charge state of dust and gas, if there is dust enhancement and/or dust is fluffy, so that dust surface area per disc volume is locally increased. We solve the charge equilibrium equations for various disc environments and dust c...
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 کاملMicroscale distribution and behavior of Th, REE, and K during regolith formation processes on the Moon: Implications for remote sensing of the surfaces of airless planetary bodies
Introduction: Remotely sensed geochemical data provide extremely valuable information concerning the global distribution of elements on a planetary surface, and are valuable in the identification of major crustal terranes. Planetary geochemical maps of the Moon and Mars for several elements such as Th, rare earth elements (REE), K, and Fe have been or are currently being prepared and have yield...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2016
ISSN: 0094-8276
DOI: 10.1002/2016gl069491