FP TrendingMay 23, 2020 4:25:17 PM IST
The Earth's magnetic field is weakening over a large area for unknown reasons. Scientists have found that the magnetic field from Africa to South America is gradually weakening.
While researchers are researching data to learn more about the area known as & # 39; South Atlantic Anomaly & # 39 ;, the phenomenon is causing technical disturbances in the satellites orbiting the Earth.
Experts from the European Space Agency (ESA) warned that the variable magnetic field can affect the spacecraft in the region.
The Earth's magnetic field is a complex and dynamic force that helps to sustain life, protecting us from cosmic radiation and other charged particles from the Sun.
It works based on the dynamo effect and the fused metals in the Earth's core create electrical currents. These, in turn, generate the
electromagnetic field on the planet.
The weakening of the magnetic field gives rise to speculation that the Earth is heading towards an imminent pole inversion, a phenomenon in which the north and south poles change places.
According to data provided by ESA, the magnetic field has lost nearly nine percent of its strength on a global average over the past 200 years. This year, the “minimum field strength” in the South Atlantic Anomaly fell from around 24,000 nanoteslas to 22,000 from its strength in 1970.
The anomaly area also grew in this period. The patch also has moved more west at a rate of approximately 20 kilometers per hour for the past 50 years.
In addition, another center of minimal intensity has emerged in the anomaly in the last five years, which could lead to the spillover of the South Atlantic anomaly.
Scientists from the Swarm Data, Innovation and Science Cluster (DISC) are using data from ESA's Swarm satellite group to better understand the occurrence.
"The new eastern low of the South Atlantic Anomaly has appeared in the past decade and, in recent years, is developing vigorously," said Jurgen Matzka, of the German Center for Research in Geosciences.
He added: "We are very lucky to have Swarm satellites in orbit to investigate the development of the South Atlantic anomaly."
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