[P-EM14] 太陽地球系結合過程の研究基盤形成

[PEM14-05] Recent activities and upcoming plans of MAGDAS project

*阿部 修司¹、キロロス ギルギス¹、藤本 晶子²、池田 昭大³、尾花 由紀¹、魚住 禎司¹、吉川 顕正^4,1 (1.九州大学 国際宇宙惑星環境研究センター、2.九州工業大学、3.鹿児島工業高等専門学校、4.九州大学大学院理学研究院地球惑星科学部門)

キーワード：磁力計、レーダー、観測、オープンデータ

MAGDAS (MAGnetic Data Acquisition System) project is a worldwide ground-based magnetometer observation network operated by the International Research Center for Space and Planetary Environmental Science (i-SPES) at Kyushu University. In celebration of its 20th anniversary, this year also marks the 40th anniversary of the beginning of the magnetic field observation network at Kyushu University. The network configuration is distributed along the Japanese magnetic meridian and the geomagnetic equator. This exceptional arrangement provides an adequate observation of the geomagnetic field variations over space-time simultaneously. One of the project key outputs is the Equatorial Electrojet (EE) index, which monitors the temporal and long-term variations of the equatorial electrojet by using data acquired from magnetometers deployed in the magnetic equatorial region. Since the last year, most MAGDAS stations in the Asian-Pacific region had been successfully re-operated. In the next fiscal year, the South American and African stations are planned to be re-activated. Furthermore, MAGDAS project involves measuring the ionospheric variations using Frequency Modulated Continuous Wave (FM-CW) radar, which was installed in early 2000, and will be upgraded through digitization. In addition, an Software Defined Radio (SDR)-based ionospheric scintillation observation system had been developed, whose function is to automatically calculate and store the S4 index, a standard index used to measure ionospheric disturbances. The developed system is currently in the testing operation phase at the Ito Campus of Kyushu University and will be installed at MAGDAS stations around the world in the future. Moreover, since the assignment of the Digital Object Identifier (DOI) for observational data-based research is the foundation of open science, the project aims to provide data and information publicly accessible, and very beneficial for the project team members to track data usage and evaluate the project outcomes. The new database system and procedure of assigning the DOIs to MAGDAS data are currently under evaluation in collaboration with Kyushu University Library. The first step is to consider assigning the DOIs to MAGDAS stations in Japan, then extend the database system to incorporate all MAGDAS stations around the world.