@inproceedings{oai:jaxa.repo.nii.ac.jp:00020365, author = {綱川, 秀夫 and 渋谷, 秀敏 and 高橋, 太 and 清水, 久芳 and 松島, 政貴 and 松岡, 彩子 and 中澤, 暁 and 大嶽, 久志 and 飯島, 祐一 and Tsunakawa, Hideo and Shibuya, Hidetoshi and Takahashi, Futoshi and Shimizu, Hisayoshi and Matsushima, Masaki and Matsuoka, Ayako and Nakazawa, Satoru and Otake, Hisashi and Iijima, Yuichi}, book = {月・惑星シンポジウム, Proceedings of the ISAS lunar and planetary symposium}, month = {Aug}, note = {第42回 月・惑星シンポジウム(2009年8月5-7日, 宇宙航空研究開発機構宇宙科学研究本部), The 42nd ISAS Lunar and Planetary Symposium (August 5-7, 2009. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)), Sagamihara, Kanagawa Japan, The magnetic field around the Moon has been successfully observed at a nominal altitude of ca.100 km by the lunar magnetometer (LMAG) on the SELENE (KAGUYA) spacecraft in a polar orbit since October 29, 2007. The LMAG mission has three main objectives: (1) mapping the magnetic anomaly of the Moon, (2) measuring electromagnetic and plasma environment around the Moon and (3) estimating electrical conductivity structure of the Moon. Here we review the instrumentation and calibration of LMAG and report the initial global mapping of the lunar magnetic anomaly at the nominal altitude. We have applied a new de-trending technique of the Bayesian procedure to multiple-orbit datasets observed in the tail lobe and in the lunar wake. Based on the nominal observation of 14 months, global maps of lunar magnetic anomalies are obtained with 95 % coverage of the lunar surface. After altitude normalization and interpolation of the magnetic anomaly field by the inverse boundary value problem, we obtained full-coverage maps of the vector magnetic field at a 100 km altitude. The mapping results in the present study indicate that statistically significant magnetic anomalies are distributed over almost the whole lunar surface. Relatively strong anomalies are identified in several basin, basin-antipode and near-crater regions, while the youngest basin on the Moon, the Orientale basin, has no magnetic anomaly. These suggest that the early lunar dynamo is preferable as a source of the magnetic field for the lunar crustal magnetism to the interplanetary magnetic field., 形態: CD-ROM1枚, Note: One CD-ROM, 資料番号: AA0064739021}, pages = {88--91}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)}, title = {Lunar magnetic field observation and initial global mapping of lunar magnetic anomalies by MAP-LMAG onboard SELENE (KAGUYA)}, volume = {42}, year = {2009} }