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South Atlantic Magnetic Anomaly Is Growing in a Bizarre Way

2025-10-18 Science & Technology
345.4k
19.5k
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Anton Petrov
Anton Petrov
1.6m subscribers

Rapid Changes in Earth's South Atlantic Magnetic Anomaly and Polar Fields

Discover how high-precision satellite data reveals the massive South Atlantic Anomaly (SAA) is growing and potentially splitting, alongside dramatic, unequal shifts occurring near the magnetic poles. This impacts vital space infrastructure that needs immediate attention from operators and engineers.

Short Summary

  • The South Atlantic Anomaly (SAA), a major magnetic weak spot, is expanding quickly, growing by 0.9% of Earth's surface area since 2014.
  • The SAA exhibits complex changes, suggesting it may be developing into two separate magnetic cells due to internal core fluctuations.
  • Simultaneously, the magnetic field protecting northern Canada is weakening significantly while the field over Siberia strengthens rapidly.
  • These findings, primarily derived from ESA's Swarm missions, highlight active, poorly understood dynamics deep within the Earth's outer core.
  • Understanding these magnetic shifts is crucial for protecting the growing number of satellites expected to launch in the coming years.

This document explores the recent findings regarding anomalies in Earth's magnetosphere, generated by the turbulent liquid outer core. We analyze the expansion and evolution of the South Atlantic Anomaly and the contrasting changes seen in the northern polar magnetic regions, detailing how these events affect orbiting technology and warrant deep scientific attention.

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Description

Support this channel on Patreon to help me make this a full time job: https://www.patreon.com/whatdamath (Unreleased videos, extra footage, DMs, no ads) Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath Get a Wonderful Person Tee: https://teespring.com/stores/whatdamath More cool designs are on Amazon: https://amzn.to/3QFIrFX Hello and welcome! My name is Anton and in this video, we will talk about the major magnetic anomaly on Earth - South Atlantic Anomaly Links: https://www.sciencedirect.com/science/article/pii/S0031920125001414?via%3Dihub Additional videos: https://www.youtube.com/watch?v=eH_jx9YS8OE https://www.youtube.com/watch?v=E8sGoEsP0rk https://www.youtube.com/watch?v=1OStKs-e_zc https://www.youtube.com/watch?v=_e_c0QcL6vE #earth #magnetic #anomaly 0:00 Magnetic anomaly on Earth 1:19 Magnetosphere in a nutshell 2:40 South Atlantic Anomaly 4:20 What's happening here? 5:40 ESA's swarm satellites 6:20 Bizarre results - growing and changing too much 8:10 North pole changes observed too 9:55 Previous such events from recent history 11:20 Why this is important and conclusions Enjoy and please subscribe Bitcoin/Ethereum to spare? Donate them here to help this channel grow! bc1qnkl3nk0zt7w0xzrgur9pnkcduj7a3xxllcn7d4 or ETH: 0x60f088B10b03115405d313f964BeA93eF0Bd3DbF Thank you to all Patreon supporters of this channel Special thanks also goes to all the wonderful supporters of the channel through YouTube Memberships Credit: French & Romanowicz, 2014 Cavit CC BY 4.0 https://en.wikipedia.org/wiki/North_magnetic_pole#/media/File:Magnetic_North_Pole_Positions_2015.svg Licenses used: https://creativecommons.org/licenses/by/4.0/ and relevant Creative Commons licenses

Top Comments (10)

@flags5765 2025-10-18

The argentine peso sunk so hard it affected the earths core gawdam

1.6k 119 replies
@BrutDebris8792 2025-10-19

In a YouTube filled with crap AI narration, Anton's voice and cadence is like a glass of cold sweet tea on a hot summer day. Bonus because I can actually LEARN something 😊

523 30 replies
@Lee-AD63 2025-10-19

I wonder if any of this is connected to my fridge magnet falling off this morning...

497 31 replies
@wafikiri_ 2025-10-18

I heard of the South American magnetic anomaly in the 1970's, when I studied Earth's magnetic field use on navigation as I became a commercial pilot.

321 25 replies
@iamkidev 2025-10-19

The team Terra/Sol is building up an apocalyptic-level EMP to save us from AI slop

138 19 replies
@ThmSphone 2025-10-20

the magnetic anomaly took the "come to brazil" thing a bit too literally

135 3 replies
@franks4973 2025-10-19

Anton, thx for including your scientific reference papers.

135
@Sindarielle 2025-10-20

I clicked for the delivery of a magnetic field update, but Anton deadpanning a Trudeau joke was way funnier than I was prepared for lol 😂

61 1 replies
@Crazy_Worlds 2025-10-19

Anton! I’m shocked! (~ 8:50) You actually made a joke, AND it was even quite funny. We need more of your jokes. 😂

44 1 replies
@grimreapper 2025-10-20

Learned something new. Thank you. When clay (or other clay-rich materials) is fired (e.g., kiln-fired pottery, bricks) and then cools, certain magnetic minerals (like magnetite/iron oxides) in the clay can align with the local Earth’s magnetic field at the time of cooling. Once they’ve cooled below their “blocking temperature”, that alignment becomes locked in. This is called thermoremanent magnetization (TRM).

41 5 replies

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