Earth's outer core shows unusual material shifts
A recent study from Virginia Tech reveals that the Earth's outer core is more complex and dynamic than previously thought. Analyses of seismic waves demonstrated the presence of heterogeneous materials moving within it. The researchers relied on seismic data from underground experiments on Moorea Island between 1977 and 1995, finding that the speed of seismic waves traveling through the outer core varied over time. This suggests the existence of an inhomogeneous region extending over 700 kilometers. The study's findings enhance our understanding of the formation and variations of Earth's internal magnetic field.
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