For 265 million years, Earth's magnetic field has been altered by two gigantic structures buried beneath its surface. These ancient "large low-shear-velocity provinces" or LLSVPs - massive areas of hot, dense rock - have been quietly shaping the planet's magnetic field, creating an irregular shape that scientists only recently discovered.
Geologists from the University of Liverpool made this groundbreaking discovery after years of research and simulations on supercomputers. They compared data on Earth's magnetic field to models of a uniform mantle versus one with heterogeneous regions like LLSVPs. The model that incorporated the structures matched real magnetic field data, revealing an asymmetrical flow of liquid iron in the core.
This movement affects the way Earth's magnetic field is generated and can explain why it has taken on its unique shape over time. Scientists found that certain parts of the field have remained stable for hundreds of millions of years while others have undergone significant changes.
The discovery has implications for understanding ancient continental configurations, climate patterns, and the formation of natural resources. It challenges traditional assumptions about Earth's magnetic field behavior, suggesting it may not always follow a simple bar magnet alignment with the planet's axis.
Researchers at the University of Liverpool used advanced simulations to model the effects of LLSVPs on Earth's magnetic field. Their findings have shed new light on the complex processes that shape our planet.
Geologists from the University of Liverpool made this groundbreaking discovery after years of research and simulations on supercomputers. They compared data on Earth's magnetic field to models of a uniform mantle versus one with heterogeneous regions like LLSVPs. The model that incorporated the structures matched real magnetic field data, revealing an asymmetrical flow of liquid iron in the core.
This movement affects the way Earth's magnetic field is generated and can explain why it has taken on its unique shape over time. Scientists found that certain parts of the field have remained stable for hundreds of millions of years while others have undergone significant changes.
The discovery has implications for understanding ancient continental configurations, climate patterns, and the formation of natural resources. It challenges traditional assumptions about Earth's magnetic field behavior, suggesting it may not always follow a simple bar magnet alignment with the planet's axis.
Researchers at the University of Liverpool used advanced simulations to model the effects of LLSVPs on Earth's magnetic field. Their findings have shed new light on the complex processes that shape our planet.