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为了研究1983年6月11日日全食的地磁场效应,我们在巴布亚新几内亚的莫尔兹比港(Port Moresby)进行了地磁观测。经过资料分析,在消除当天的正常日变化和干扰变化后,日食效应比较明显,水平强度减小(-3.6±1.2nT),磁偏角偏东(0.6′±0.1′E)和垂直强度增加(5.0±1.1nT)。证实了日全食引起地磁场强度和方向的变化,与食分、食甚持续时间、太阳高度角(即日食发生的地方时)和季节有关。
In order to study the geomagnetic field effects of the total solar eclipse on June 11, 1983, we performed geomagnetic observations in Port Moresby, Papua New Guinea. After data analysis, the daily solar eclipse effect was obvious after eliminating the normal daily changes and interference changes, the horizontal intensity was reduced (-3.6 ± 1.2nT), the magnetic declination angle was 0.6’ ± 0.1’E (east) and the vertical intensity Increase (5.0 ± 1.1nT). Confirmed the total solar eclipse caused by changes in the intensity and direction of the earth’s magnetic field, and food, food is very long duration, the solar elevation angle (ie, where the eclipse occurred) and the season.