Lunar farside Th distribution measured by Kaguya gamma-ray spectrometer

Shingo Kobayashi, Yuzuru Karouji, Tomokatsu Morota, Hiroshi Takeda, Nobuyuki Hasebe, Makoto Hareyama, Masanori Kobayashi, Eido Shibamura, Naoyuki Yamashita, Claude d'Uston, Olivier Gasnault, Olivier Forni, Robert C. Reedy, Kyeong Ja Kim, Yoshiaki Ishihara

    Research output: Contribution to journalArticle

    17 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)10-16
    Number of pages7
    JournalEarth and Planetary Science Letters
    Volume337-338
    DOIs
    Publication statusPublished - 2012 Jul 1

    Fingerprint

    Gamma ray spectrometers
    Thorium
    gamma ray spectrometers
    thorium
    spectrometer
    crustal thickness
    equators
    Crystallization
    Gamma rays
    magma
    remote sensing
    Remote sensing
    oceans
    crystallization
    gamma rays
    distribution
    sensitivity
    ocean

    Keywords

    • Imbrium ejecta
    • Lunar crust
    • Lunar magma ocean
    • SELENE (Kaguya) gamma-ray spectrometer
    • Thorium

    ASJC Scopus subject areas

    • Geochemistry and Petrology
    • Geophysics
    • Earth and Planetary Sciences (miscellaneous)
    • Space and Planetary Science

    Cite this

    Kobayashi, S., Karouji, Y., Morota, T., Takeda, H., Hasebe, N., Hareyama, M., ... Ishihara, Y. (2012). Lunar farside Th distribution measured by Kaguya gamma-ray spectrometer. Earth and Planetary Science Letters, 337-338, 10-16. https://doi.org/10.1016/j.epsl.2012.05.007

    Lunar farside Th distribution measured by Kaguya gamma-ray spectrometer. / Kobayashi, Shingo; Karouji, Yuzuru; Morota, Tomokatsu; Takeda, Hiroshi; Hasebe, Nobuyuki; Hareyama, Makoto; Kobayashi, Masanori; Shibamura, Eido; Yamashita, Naoyuki; d'Uston, Claude; Gasnault, Olivier; Forni, Olivier; Reedy, Robert C.; Ja Kim, Kyeong; Ishihara, Yoshiaki.

    In: Earth and Planetary Science Letters, Vol. 337-338, 01.07.2012, p. 10-16.

    Research output: Contribution to journalArticle

    Kobayashi, S, Karouji, Y, Morota, T, Takeda, H, Hasebe, N, Hareyama, M, Kobayashi, M, Shibamura, E, Yamashita, N, d'Uston, C, Gasnault, O, Forni, O, Reedy, RC, Ja Kim, K & Ishihara, Y 2012, 'Lunar farside Th distribution measured by Kaguya gamma-ray spectrometer', Earth and Planetary Science Letters, vol. 337-338, pp. 10-16. https://doi.org/10.1016/j.epsl.2012.05.007
    Kobayashi S, Karouji Y, Morota T, Takeda H, Hasebe N, Hareyama M et al. Lunar farside Th distribution measured by Kaguya gamma-ray spectrometer. Earth and Planetary Science Letters. 2012 Jul 1;337-338:10-16. https://doi.org/10.1016/j.epsl.2012.05.007
    Kobayashi, Shingo ; Karouji, Yuzuru ; Morota, Tomokatsu ; Takeda, Hiroshi ; Hasebe, Nobuyuki ; Hareyama, Makoto ; Kobayashi, Masanori ; Shibamura, Eido ; Yamashita, Naoyuki ; d'Uston, Claude ; Gasnault, Olivier ; Forni, Olivier ; Reedy, Robert C. ; Ja Kim, Kyeong ; Ishihara, Yoshiaki. / Lunar farside Th distribution measured by Kaguya gamma-ray spectrometer. In: Earth and Planetary Science Letters. 2012 ; Vol. 337-338. pp. 10-16.
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    AU - Hasebe, Nobuyuki

    AU - Hareyama, Makoto

    AU - Kobayashi, Masanori

    AU - Shibamura, Eido

    AU - Yamashita, Naoyuki

    AU - d'Uston, Claude

    AU - Gasnault, Olivier

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