Farside Gravity Field of the Moon from Four-Way Doppler Measurements of SELENE (Kaguya)

The farside gravity field of the Moon is improved from the tracking data of the Selenological and Engineering Explorer (SELENE) via a relay subsatellite. The new gravity field model reveals that the farside has negative anomaly rings unlike positive anomalies on the nearside. Several basins have lar...

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Bibliographic Details
Published in:	Science (American Association for the Advancement of Science) Vol. 323; no. 5916; pp. 900 - 905
Main Authors:	Namiki, Noriyuki, Iwata, Takahiro, Matsumoto, Koji, Hanada, Hideo, Noda, Hirotomo, Goossens, Sander, Ogawa, Mina, Kawano, Nobuyuki, Asari, Kazuyoshi, Tsuruta, Sei-itsu, Ishihara, Yoshiaki, Liu, Qinghui, Kikuchi, Fuyuhiko, Ishikawa, Toshiaki, Sasaki, Sho, Aoshima, Chiaki, Kurosawa, Kosuke, Sugita, Seiji, Takano, Tadashi
Format:	Journal Article
Language:	English
Published:	Washington, DC American Association for the Advancement of Science 13-02-2009 The American Association for the Advancement of Science
Subjects:	Astrophysics Basalt Cosmochemistry. Extraterrestrial geology Earth sciences Earth, ocean, space Earths Moon Exact sciences and technology Extraterrestrial geology Gravitational anomalies Gravitational fields Gravity Gravity models Line spectra Lunar gravitation Mascons Measurement techniques Moon Nectarian era Space exploration gravity field Moon volcanic rocks topography lithosphere igneous rocks faults farside gravity anomalies basalts uplifts space programs mantle maria basins
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Summary:	The farside gravity field of the Moon is improved from the tracking data of the Selenological and Engineering Explorer (SELENE) via a relay subsatellite. The new gravity field model reveals that the farside has negative anomaly rings unlike positive anomalies on the nearside. Several basins have large central gravity highs, likely due to super-isostatic, dynamic uplift of the mantle. Other basins with highs are associated with mare fill, implying basalt eruption facilitated by developed faults. Basin topography and mantle uplift on the farside are supported by a rigid lithosphere, whereas basins on the nearside deformed substantially with eruption. Variable styles of compensation on the near- and farsides suggest that reheating and weakening of the lithosphere on the nearside was more extensive than previously considered.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0036-8075 1095-9203
DOI:	10.1126/science.1168029