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American Focus > Blog > Tech and Science > Sunken Continents Near Earth’s Core Could Unbalance Our Magnetic Field : ScienceAlert
Tech and Science

Sunken Continents Near Earth’s Core Could Unbalance Our Magnetic Field : ScienceAlert

Last updated: March 4, 2025 11:19 pm
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Sunken Continents Near Earth’s Core Could Unbalance Our Magnetic Field : ScienceAlert
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Uncovering the Mysteries of Earth’s Magnetic Field Instability

Recent discoveries have shed light on continent-sized mineral structures protruding from the lower mantle towards Earth’s outer core, potentially contributing to the instability of our planet’s magnetic field. These two massive formations, located under the Pacific and Africa, have puzzled scientists for decades due to their seismic similarities, leading to the assumption that they share the same composition.

However, a team of researchers led by Cardiff University geodynamicist James Panton has determined that these two regions are actually made of different materials and have distinct histories. This new finding could have significant implications for understanding Earth’s internal processes and how they influence the generation of the planet’s magnetosphere.

The structures, known as “large low-velocity provinces,” reach heights of up to 900 kilometers and span thousands of kilometers in width. They are believed to contain a significant amount of former oceanic crust, which has been cycled deep into the mantle over millions of years, affecting the composition and density of these regions.

According to Panton and his team, the Pacific structure contains a higher percentage of fresh oceanic crust compared to the African province, likely due to the ongoing geological activity in the Pacific Ring of Fire. This difference in composition has a direct impact on the density and heat flow within these regions, influencing the way Earth’s core generates its magnetic field.

While the African structure is less geologically active and contains older, more mixed crust, both regions play a crucial role in regulating Earth’s internal heat dissipation and convection patterns. This, in turn, affects the stability of the planet’s magnetic field, which is essential for protecting our atmosphere from harmful solar particles.

See also  What It Is And How to See It : ScienceAlert

Further research is needed to fully understand the implications of these deep Earth anomalies and their effects on the overall dynamics of our planet. By investigating additional data sources, such as observations from Earth’s gravitational field, scientists hope to gain a more comprehensive understanding of how these structures influence Earth’s magnetic field and the delicate balance of life-sustaining conditions on our planet.

This groundbreaking research, published in Scientific Reports, represents a significant step forward in unraveling the mysteries of Earth’s magnetic field instability and its implications for the future of our planet.

TAGGED:ContinentsCoreEarthsfieldmagneticScienceAlertsunkenUnbalance
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