Author/Authors :
Kobayashi، نويسنده , , Shingo and Karouji، نويسنده , , Yuzuru and Morota، نويسنده , , Tomokatsu and Takeda، نويسنده , , Hiroshi and Hasebe، نويسنده , , Nobuyuki and Hareyama، نويسنده , , Makoto and Kobayashi، نويسنده , , Masanori and Shibamura، نويسنده , , Eido and Yamashita، نويسنده , , Naoyuki and d’Uston، نويسنده , , Claude and Gasnault، نويسنده , , Olivier and Forni، نويسنده , , Olivier and R، نويسنده ,
Abstract :
Kaguya gamma-ray spectrometer measured thorium (Th) distribution on the lunar farside with the highest sensitivity among past gamma-ray remote sensing missions. The newly obtained Th map has revealed that two regions near the equator on the farside have the lowest Th abundances. We found that the variation of the Th abundance perfectly correlates with the crustal thickness in the farside and the southern nearside, and it could be a result of the crystallization of the lunar magma ocean.
Keywords :
Lunar magma ocean , Imbrium ejecta , SELENE (Kaguya) gamma-ray spectrometer , thorium , moon , Lunar crust
