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  • American Association for the Advancement of Science (AAAS)  (1)
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    Publication Date: 2012-12-12
    Description: Spacecraft-to-spacecraft tracking observations from the Gravity Recovery and Interior Laboratory (GRAIL) have been used to construct a gravitational field of the Moon to spherical harmonic degree and order 420. The GRAIL field reveals features not previously resolved, including tectonic structures, volcanic landforms, basin rings, crater central peaks, and numerous simple craters. From degrees 80 through 300, over 98% of the gravitational signature is associated with topography, a result that reflects the preservation of crater relief in highly fractured crust. The remaining 2% represents fine details of subsurface structure not previously resolved. GRAIL elucidates the role of impact bombardment in homogenizing the distribution of shallow density anomalies on terrestrial planetary bodies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zuber, Maria T -- Smith, David E -- Watkins, Michael M -- Asmar, Sami W -- Konopliv, Alexander S -- Lemoine, Frank G -- Melosh, H Jay -- Neumann, Gregory A -- Phillips, Roger J -- Solomon, Sean C -- Wieczorek, Mark A -- Williams, James G -- Goossens, Sander J -- Kruizinga, Gerhard -- Mazarico, Erwan -- Park, Ryan S -- Yuan, Dah-Ning -- New York, N.Y. -- Science. 2013 Feb 8;339(6120):668-71. doi: 10.1126/science.1231507. Epub 2012 Dec 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA. zuber@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23223395" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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