Scientists Discover Deep Earth Structures That Shape Our Magnetic Field
Scientists have made an exciting discovery. Deep inside Earth, huge hot rock structures exist. These formations quietly shape our planet’s magnetic field. In fact, they have done so for millions of years. The research comes from the University of Liverpool. Scientists used ancient magnetic records and advanced computer models. They found two massive hot rock structures. These sit nearly 3,000 kilometers below Africa and the Pacific Ocean.
How These Deep Structures Influence Earth’s Core
These giant formations affect the liquid iron in Earth’s outer core. This iron flow generates our magnetic field, much like a turbine creates electricity. The new study shows the upper core is not uniformly hot. Instead, sharp temperature differences exist beneath these rock structures.Consequently, the magnetic field behaves unevenly. Some parts remained stable over eons. However, other sections changed dramatically. This finding challenges old assumptions.
Connecting Ancient Data With Modern Simulations
Researchers combined two key methods. First, they examined paleomagnetic data from ancient rocks. Then, they ran supercomputer simulations of Earth’s geodynamo. This process models magnetic field generation over 265 million years.The results were clear. The immense heat from the deep rock structures impacts core flow. Professor Andy Biggin explained the findings. “Beneath hotter regions, liquid iron may stagnate,” he said. Cooler areas, however, see more vigorous movement.
Why This Discovery Matters for Science
This work offers fresh insight into Earth’s deep interior. Therefore, it helps us understand planetary evolution. The findings also affect other scientific fields.For example, they may clarify ancient continental shifts. They could also resolve uncertainties in past climate studies. Many fields assumed Earth’s magnetic field averaged like a simple bar magnet. Now, we know the reality is more complex.
In addition, this research can aid studies on natural resource formation. The team published their work in Nature Geoscience. It marks a significant step in geophysics.
