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首页> 外文会议>International Conference on Applied Electromagnetic Technology >Earth Magnetic Fields Evolution over Nusa Tenggara Region from Declination and Inclination Changes on Lombok Geomagnetic Observatory
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Earth Magnetic Fields Evolution over Nusa Tenggara Region from Declination and Inclination Changes on Lombok Geomagnetic Observatory

机译：从龙目岛地磁观测站的偏角和倾角变化看努沙登加拉地区的地球磁场演化

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Earth's magnetic field is a physical quantity that always changes both spatially and temporally. Its long-term change is closely related to internal mechanisms within the Earth's core, whereas changes in the medium-term may be related to events occurring in the Earth's crust. Continuous observations at many locations are needed to determine the magnitude and direction of the Earth's magnetic field. A geomagnetic observatory is an ideal means for conducting such observations, whereby its location is required to be very quiet in order to limit noise and interference (mainly due to human activities). On the island of Lombok, a geomagnetic observatory has been established in 2014 and it has produced high quality and continuous data since 2015. This paper (together with another paper presented in this conference) presents the results of observations of the Earth's magnetic field at the Lombok geomagnetic observatory during 3 (three) years of its initial operation. This paper specifically presents the results of declination and inclination measurements. The slowly changes in the values of declination and inclination are observed clearly, that the declination values changed by 0.0104°/yr (eastwards), while the inclination changed by 0.0467°/yr (downward). Compared to the IGRF-12 model, it shows unusual changes, which for this region declination should change by 0.0767°/yr (westward) and inclination by 0.1267°/yr (downward). The results of the observation provide clues that we have to pay more attention and scrutiny to the geomagnetic evolution over Nusa Tenggara region. Further continuous observations on the island of Lombok are necessary to confirm the tendency of declination and inclination changes, which will be most useful for integration with global observations (to know the evolution of the Earth's magnetic field, especially related to magnetic pole reversal), as well as with regional observations (to know the fluctuations of the Earth's magnetic field, especially related to earthquake precursors).
机译：地球磁场是一个总是在空间和时间上都在变化的物理量。它的长期变化与地球核心内的内部机制密切相关，而中期变化可能与地壳中发生的事件有关。需要在许多位置进行连续观测，以确定地球磁场的大小和方向。地磁观测站是进行此类观测的理想手段，因此要求其位置必须非常安静，以限制噪声和干扰（主要是由于人类活动造成的）。在龙目岛上，2014年建立了一个地磁观测站，自2015年以来它一直提供高质量和连续的数据。本文（以及本次会议提出的另一篇论文）介绍了地球磁场观测的结果。龙目岛地磁天文台在其最初运行的三（三）年内。本文专门介绍了磁偏角和倾角测量的结果。可以清楚地观察到倾斜度和倾斜度值的缓慢变化，即倾斜度值变化了0.0104°/ yr（向东），而倾斜度变化了0.0467°/ yr（向下）。与IGRF-12模型相比，它显示出不同寻常的变化，对于该区域，其倾斜度应变化0.0767°/ yr（向西），而倾斜度应变化0.1267°/ yr（向下）。观测结果提供了线索，我们必须对努沙登加拉地区的地磁演化给予更多的关注和审查。有必要在龙目岛进行进一步的连续观测，以确认磁偏角和倾角变化的趋势，这对于与全球观测相结合（了解地球磁场的演变，特别是与磁极反转有关）最有用。以及区域观测（以了解地球磁场的波动，特别是与地震前兆有关的波动）。

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