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بوابة أخبار اليوم
Seismic waves uncover rapid Earth's core movements
A recent study has revealed that the movement of seismic waves as they pass through the Earth's interior indicates that the Earth's outer core is more active and complex than previously thought. The study was based on data from old nuclear experiments conducted on Moorea Island in French Polynesia between 1977 and 1995. These experiments showed that wave speeds vary noticeably, being faster in the early 1980s and slowing down in the 1990s. The findings suggest the presence of an unusual region extending over 700 kilometers within the outer core, supporting the hypothesis that the material inside the core is not static and may influence the Earth's magnetic field formation. The study emphasizes that even slight variations in wave speed carry important information about the movement of materials at depths of thousands of kilometers.
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