2024-11-17 21:00:00
Scientists say, Earth’s magnetic field Going through one of the strangest changes ever. Magnetic North Pole is exhibiting behavior ‘never observed before’as it is moving toward Russia, just as it has been doing since the early 19th century, but at a much slower pace.
Unlike its geographical counterpart that marks the world’s northernmost point, the North Pole is not a fixed location but changes with magnetic activity beneath the Earth’s crust. according to World Magnetic Modelwhich tracks the planet’s magnetic poles, this constant motion is caused by moving molten iron, Slowing down by about 24 kilometers per year.
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This figure shocked expertsas that’s less than half the speed recorded in the 2000s and even nearly 16 kilometers slower than in 2020, when the model was last updated.
“The magnetic pole has been moving very slowly around Canada for many centuries, since the 16th century,” he said. Ciaran Begum of the British Geological Survey. “Over the past 20 years, it accelerated northward toward Siberia, increasing in speed every year until about five years ago, when Suddenly reduced from 50 kilometers to 40 kilometers per year“he explained.
He added: “This is behavior we have never observed before. This makes predicting changes in the magnetic field more difficult. In comparison, the Antarctic moves very slowly. “We really don’t know why there are so many differences between the two hemispheres.”
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Discovered in Canada in 1831 Sir James Clark RossBritish naval commander and Arctic explorer, the magnetic North Pole has since advanced towards Siberia. While Ross used a combination of magnetic and compass needles and chart readings to confirm his findings, modern technology is much more sophisticated. In this sense, british geological surveyThe World Magnetic Model was developed in cooperation with the National Geophysical Data Center of the United States, mainly based on European Space Agency satellite constellation.
teacher Phil Livermorefrom the University of Leeds, UK, postulates fluctuations in the position of magnetic north pole They are caused by the movement of “jet streams” of liquid iron in the Earth’s core.. Tracking this movement would allow scientists to predict changes, but the process is complicated by the fact that liquid iron lies deep within the Earth’s crust.
Although the changes in the magnetic field were not noticed, Have more or less impact on daily life. For example, they affect the direction of magnetic witches used to guide airplanes and submarines, and can even change smartphone compasses. They can also have a significant impact on drilling oil and gas wells or investigating seismic activity.
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What are the key factors influencing the recent changes in the Earth’s Magnetic North Pole?
**Interview: Understanding the Shifts in Earth’s Magnetic Field**
**Host:** Welcome to today’s segment! We have with us Ciaran Begum from the British Geological Survey, an expert in geomagnetism. Ciaran, thank you for joining us!
**Ciaran Begum:** Thank you for having me!
**Host:** Let’s dive right in. We’ve been hearing that the Earth’s magnetic field is undergoing some unusual changes. Can you explain what is happening with the Magnetic North Pole?
**Ciaran Begum:** Absolutely. The Magnetic North Pole has been exhibiting behavior we’ve never observed before. It’s moving northward toward Russia, a process that started in the early 19th century but has accelerated over the last two decades. Interestingly, we are now seeing a significant slowdown in that movement.
**Host:** Interesting! You mentioned that it’s slowed down to about 24 kilometers per year, which is quite a change from the earlier speeds recorded in the 2000s. What do you think has caused this slowdown?
**Ciaran Begum:** That’s a great question. The movement of the Magnetic North Pole is influenced by the flow of molten iron in the Earth’s outer core. While it had been speeding up, a recent analysis shows a drop to less than half of the previous speeds we recorded, reflecting changes in the dynamics of the magnetic field under the surface.
**Host:** So, what implications does this have for navigation and tools that rely on the magnetic field?
**Ciaran Begum:** This change can affect compasses and navigational systems that utilize magnetic bearings. It’s essential for us to keep updating models like the World Magnetic Model to ensure that these tools remain accurate.
**Host:** You also noted that predicting these changes is becoming more challenging. Why is that?
**Ciaran Begum:** With the behavior we’ve observed recently, the predictability of the pole’s movements has become more complicated. When we have data indicating such significant slowdowns and changing patterns, it raises questions about our current understanding and how we model future changes.
**Host:** Thank you for shedding light on this fascinating topic, Ciaran. Before we wrap up, is there anything else you would like to add regarding our understanding of magnetic fields and their importance?
**Ciaran Begum:** Just that continuous monitoring and research into magnetic fields are crucial not only for navigation but also for understanding Earth’s geological processes. As we continue to look into these changes, there’s still so much to learn.
**Host:** Thank you, Ciaran, for your insights today. It’s clear that the magnetic field is a vital aspect of our planet that deserves close attention.
**Ciaran Begum:** Thank you for having me!
**Host:** And thank you to our viewers for tuning in. Stay informed about the Earth’s magnetic phenomena and how they impact our world. Until next time!