An illustration of the planet from Space. Depositphotos.

The Mysterious Bermuda Triangle of Space: The South Atlantic Anomaly is Growing

A baffling "pothole" in space above South America is increasing radiation risks, impacting satellites and leaving scientists searching for answers. As solar activity intensifies, the stakes only get higher.


The South Atlantic Anomaly, a region in space dubbed the “Bermuda Triangle of Space,” is causing concern among scientists as it continues to grow and mystify researchers. What is causing this strange phenomenon, and could it be a sign of something more ominous lurking in the depths of space? As the anomaly expands, scientists are scrambling to unravel the mysteries of this enigmatic region and determine its potential impact on Earth and beyond.

The Mysterious Magnetic Anomaly

A perplexing “pothole” in space has been disrupting satellites and confounding geophysicists. This magnetic anomaly, first detected in the South Atlantic Ocean in 1958, is evolving – and might even be splitting in two. NASA and the ESA’s latest observations reveal that the anomaly has real-world implications for low Earth orbit activities.

The Van Allen Belt: Earth’s Radiation Shield

The magnetic Van Allen belt serves as a protective barrier against solar and cosmic radiation. By repelling and trapping charged particles, it redirects them towards the poles, resulting in vibrant auroras during periods of heightened activity. However, a growing weak spot in the Earth’s magnetic field – the South Atlantic Anomaly (SAA) – is exposing satellites and the International Space Station (ISS) to increased radiation risks.

The South Atlantic Anomaly: An Unusual Radiation Gateway

Despite its location over the South Atlantic, the SAA permits particles to penetrate closer to Earth without any noticeable effect on the ground. This magnetic anomaly is not only deepening but also shifting westward. The area it impacts has grown by approximately 5%, resulting in a heightened risk of radiation damage to satellites.


The Hazards of Charged Particles

Charged particles pose a significant threat to satellites and their operations. They can cause short circuits in computers, corrupt stored data, and interfere with sensor functions. As a result, space agencies and commercial satellite operators are eager to understand the SAA’s behavior and find solutions to these challenges.

A Double-Lobed Anomaly: Growing Magnetic Weakness

Recent data reveals that the SAA has developed two lobes of increasing magnetic field weakness, with one extending westward over Argentina and Brazil. Unraveling the reasons behind this phenomenon may help geophysicists offer magnetic field “weather forecasts” for future satellite operators and astronauts, allowing them to avoid the radioactive pitfalls associated with the anomaly.

The Origins of the South Atlantic Anomaly

Geophysicists theorize that the South Atlantic Anomaly originates from the Earth’s magnetic axis tilt and the flow of molten metals in the planet’s outer core. The interaction between the molten core and the solid mantle above it is inconsistent, causing the magnetic poles’ tilt and drift to change over millennia.

New Insights from the University of Leeds

A study by Dr. Jonathan Mound and Professor Christopher Davies at the University of Leeds suggests that the characteristics of metals cooling at the boundary of the core and mantle may be responsible for the SAA’s magnetic field weakness. The research reveals that cooling is not uniform, with “hot zones” under Africa and the Pacific potentially weakening the magnetic field.

Navigating the Danger Zone: Protecting Satellites and Astronauts

As a result of this weakened magnetic field, satellites must often shut down non-essential sensitive equipment when passing through the SAA to protect themselves from disruption and interference caused by charged particles. Similarly, astronauts on the International Space Station avoid conducting spacewalks when in the region.


A Long-lasting Phenomenon: SAA’s Future

According to the researchers, the SAA is not expected to disappear anytime soon. Dr. Mound explains that processes in the mantle occur very slowly, and the temperature anomalies in the lower mantle have likely remained unchanged for tens of millions of years. Consequently, the magnetic field properties they generate should also be similar over such extended periods.

Fluctuating Moods: Keeping Space Operators Alert

Despite the SAA’s long-lasting nature, its changing characteristics will continue to challenge space operators. Dr. Mound notes that the outer core is a highly dynamic fluid region, and heat flows and magnetic field properties caused by it may fluctuate over shorter timescales, ranging from hundreds to thousands of years. This ever-evolving phenomenon will require ongoing monitoring and adaptation by satellite operators and astronauts alike.

Written by Justin Gurkinic

Hey, my name is Justin, and my friends call me Gurk. Why? Becuase of my last name. It sounds like a vegetable. Kind of. I love sleeping and writing. History is my thing.

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