Asymmetric craters on Vesta: Formation on sloping surfaces
نویسنده
چکیده
K. Krohn (1), R. Jaumann (1,2), D. Elbeshausen (3), T. Kneissl (2), F. Preusker (1), T. Roatsch (1), N. Schmedemann (2), C.A. Raymond (4), C.T. Russell (5) (1) Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany, (2) Freie Universität Berlin, Planetary Sciences and Remote Sensing, Berlin, Gemany, (3) Museum für Naturkunde, Leibniz-Institut für Evolutionsund Biodiversitätsforschung, Berlin, Germany (4) Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USA, (5) UCLA, Institute of Geophysics, Los Angeles, USA ([email protected]/ Fax: +49-30-67055402)
منابع مشابه
The Geology of Vesta
The Dawn spacecraft collected over 28,000 images and a wealth of spectral data of Vesta’s surface. These data enable analysis of Vesta’s diverse geology including impact craters of all sizes and unusual shapes, a variety of ejecta blankets, large troughs, impact basins, enigmatic dark material, and considerable evidence for mass wasting and surface alteration processes [1,2,3]. Two large impact...
متن کاملDawn completes its mission at 4 Vesta
The Dawn mission was designed to test our hypothesis about the origin and evolution of the early solar system by visiting the largest differentiated basaltic asteroid, 4 Vesta, believed to be a survivor from the earliest times of rocky body formation. Observations from orbit show that Vesta is the parent body of the Howardite, Eucrite, Diogenite meteorites. Vesta has an iron core and a eucritic...
متن کاملGeologic mapping of Vesta
We report on a preliminary global geologic map of Vesta, based on data from the Dawn spacecraft’s HighAltitude Mapping Orbit (HAMO) and informed by Low-Altitude Mapping Orbit (LAMO) data. This map is part of an iterative mapping effort; the geologic map has been refined with each improvement in resolution. Vesta has a heavily-cratered surface, with large craters evident in numerous locations. T...
متن کاملThe geological nature of dark material on Vesta and implications for the subsurface structure
Deposits of darkmaterial appear on Vesta’s surface as features of relatively low-albedo in the visible wavelength range of Dawn’s camera and spectrometer. Mixed with the regolith and partially excavated by younger impacts, the material is exposed as individual layered outcrops in crater walls or ejecta patches, having been uncovered and broken up by the impact. Dark fans on crater walls and dar...
متن کاملPitted terrain on Vesta and implications for the presence of volatiles.
We investigated the origin of unusual pitted terrain on asteroid Vesta, revealed in images from the Dawn spacecraft. Pitted terrain is characterized by irregular rimless depressions found in and around several impact craters, with a distinct morphology not observed on other airless bodies. Similar terrain is associated with numerous martian craters, where pits are thought to form through degass...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013