卫星数据显示,由于深层地壳矿物的变化,非洲沿海的地球核心地壳边界突然发生重力变化。 Satellite data revealed a sudden gravity shift near Earth’s core-mantle boundary off Africa’s coast, likely due to deep mantle mineral changes.

科学家利用2006年至2008年的卫星数据,在地球核心地标边界附近发现了无法解释的变化,这表明非洲大西洋沿岸与表面过程无关的重力突然发生变化。 Scientists detected unexplained changes near Earth’s core-mantle boundary using satellite data from 2006 to 2008, showing a sudden shift in gravity off Africa’s Atlantic coast not linked to surface processes. 研究人员认为,这一转变可能源于普罗夫斯基特的结构性变化,它是一种深层地层矿物,在压力下变得更加稠密,边界变形约10厘米,并可能影响2007年左右观察到的磁异常。 Researchers suggest the shift may stem from a structural change in perovskite, a deep mantle mineral, becoming denser under pressure, deforming the boundary by about 10 centimeters and possibly influencing magnetic anomalies observed around 2007. 这些研究结果以GRAMEE飞行任务数据为基础,发表在《地球物理研究信》中,揭示了对地球深层内部动态及其对地震活动和地球磁场的潜在影响的新认识,突出了长期卫星观测的重要性。 The findings, based on GRACE mission data and published in Geophysical Research Letters, reveal new insights into Earth’s deep interior dynamics and their potential impact on seismic activity and the planet’s magnetic field, underscoring the importance of long-term satellite observations.