An artificial satellite whose main purpose is to measure the geomagnetic field, it has the advantage of being able to measure the entire Earth in a short period of time. The observation results are useful for investigating the structure of the geomagnetic field, magnetic anomalies, geomagnetic changes, and the structure of the ionosphere and magnetosphere. Particularly well-known is the American Magsat, launched in 1979, which, thanks to its sophisticated magnetometer and attitude determination, was able to perform measurements with a high accuracy of 1/10,000. [Yanagisawa Masahisa] Source: Heibonsha World Encyclopedia, 2nd Edition Information |
地球磁場の測定を主要な目的とした人工衛星で,短期間に,地球全体にわたっての測定ができるという利点をもっている。観測結果は,地球磁場の構造,磁気異常,地磁気変化,電離層や磁気圏の構造などを調べるのに役立っている。特に有名なのは,1979年に打ち上げられたアメリカのマグサットで,精巧な磁力計と姿勢決定により,1/10000という高精度で測定を行った。【柳沢 正久】
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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