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Earth's core movements uncovered by seismic waves
A new study has revealed that Earth's outer core is more complex and dynamic than previously thought. Analyses of seismic waves, along with data from underground nuclear tests conducted by France in the past, showed that seismic waves passing through the outer core did not behave uniformly, exhibiting slight variations in speed between 1977 and 1995. This suggests the presence of heterogeneous materials moving within the core, and a mysterious region extending over 700 kilometers south of the Pacific Ocean. The findings contribute to a better understanding of how Earth's magnetic field is generated, which is influenced by the movement of liquid metals in the outer core.
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