Magnetic fields and the Earth’s Core

The Internal Structure of Earth (The Internal Structure of Earth, accessed 07/12/2020)

The content of this section, like many others on this website, has evolved over time. I’ve tried to capture my thoughts and understanding to share with like-minded souls such as yourselves. There will be those who have a more in-depth knowledge and I apologize for any content that readers know to be incorrect. This is not The Truth, more just an exploration of thoughts and ideas, which I have found to be fascinating and which have aroused my curiosity. 

From a geologist’s perspective, volcanic rocks are known to carry the energy signature of the planet. They reflect both the magnetism of the Earth; and the levels of iron and other constituent elements in the magma, at the time they were ejected from the volcano, even if that was many hundreds of millions of years ago.

Scientists inform us the core of the Earth has a temperature of 4,000 Kelvins and is made up of iron-nickel alloy crystals under extreme pressures (Earth’s Inner Core, accessed 08/12/2020). Over the many hundreds of millions of years of the Earth’s existence, these core crystals have formed and grown to huge lengths, possibly up to 10km. This solid core is believed to look like a forest of crystals, all of which point towards the magnetic pole; which is one explanation for why seismic waves tend to flow better in a north/south direction, rather than east/west. One question which scientists have asked is, ‘why is the core of the Earth so different from everything we know about the Earth, both above and below the surface?’ The answer to this question is thought to be the key to life on Earth. Scientists now believe the core contains a ‘memory’ of everything that has happened on Earth since the planet was birthed, during the formation of our Solar System 4.6 billion years ago. Since that time, the extremely high temperatures and pressures inside the planet have caused the iron to separate out and sink to the core, leaving the outer layers with a very different chemical and structural makeup.

Whilst the inner core has crystallised, the outer core is slightly cooler and still molten. It is the heat in this molten outer core, moving by convection and electromagnetic induction, that generates the electromagnetic field, or magnetosphere, which both surrounds and protects the Earth from the bombardment of energy particles from the Sun. This is an incredibly important feature of our planet, which helps to make it habitable. The magnetosphere is constantly changing because the core is an area of great turbulence; full of eddies and currents, similar to those found in our atmosphere. It is this turbulence that drives and creates the Earth’s magnetic field (Earth’s Magnetic Field, accessed 08/12/2020). The magnetosphere is constantly in flux and scientific monitoring shows it has been slowly decreasing over the last 180 years. 

One region, which scientists call the ‘South Atlantic Anomaly’ is weakening at a faster rate than expected and slowly expanding westwards. In this weakened region, the Earth’s magnetic field dips closer to the surface of the planet. The first effects of this weakening became apparent in space, when orbiting satellites and the Hubble Spacecraft began to experience unexpected, repeated faults. After much analysis, scientists realised that every time the Hubble Spacecraft passed over the South Atlantic Anomaly, it entered an area of space that was unprotected by the Earth’s magnetic field and was bombarded by damaging protons from the Sun. Scientists now regularly shut down the highly sensitive instruments on board orbiting spacecraft and satellites, before they enter the South Atlantic Anomoly, to protect them.

As the flow structure of the constantly moving liquid of the outer core changes, it forces changes in the magnetic field; and scientists have recently found multiple areas where the magnetism is flipping polarity. Geologists have long been aware of flips in the Earth’s magnetic poles; indeed these changes are recorded in the rock record and are most clearly seen as lines of changing magnetism in the rocks of the sea floor, created by the spreading of tectonic plates. However, with the use of satellites, it is now possible to monitor and record changes to the Earth’s magnetic field, dynamically. As this long-term flip in the magnetic poles evolves, it is eminently feasible that the Earth might have multiple north and south poles, which could cause problems for animals and birds that rely on magnetism and the magnetic poles for navigation. The question is not one of IF it happens, but WHEN it will happen next…

The scientists who ‘discovered’ the crystal nature of the Earth’s solid core, also observed that the iron crystals appear to move with the Sun as the Earth rotates around it; causing magnetic fields at a given location on the Earth’s surface, to reduce during the night and increase during the day. I’ve heard this idea expressed many times by dowsers, who have experienced changes in the energy fields surrounding standing stones in the Northern Hemisphere. By day, the energy flows in a clockwise spiral down the stone and into the Earth, whilst by night it flows up from the stone in an anti-clockwise spiral and out into the sky above (Graves, 1978). 

In addition, there are other, sometimes more subtle energy flows and cycles, that affect all living organisms. We are all familiar with the concept of twice-daily tides around the shores of our seas and oceans. We know tides are caused by the gravitational pull of the Moon and can vary, dependent on the position of the Moon and Sun, during the 28-day cycle of the Moon’s orbit around the Earth. Some can be exceptionally low (Neap tides), whilst others are high (Spring tides). During a New Moon, the gravitational pull is often greatest, as the Moon and Sun are in alignment on the same side of the Earth. During a Full Moon, the Sun and Moon are on opposite sides of the Earth and so the gravitational pull is not as great, even though the presence of the Full Moon in clear night skies is very dominant. What many are not aware of though, is that the gravitational pull that causes tides, continues around the Earth, through the landmasses of our continents. Also, given our bodies and those of most animals on Earth have very high percentages of water, we too can experience subtle changes at times of high gravitational pull. Even if we, as humans, are not aware of these changes that doesn’t mean they don’t exist. 

Evidence from many ancient societies and civilizations, across all continents, suggests that ‘The Ancients’, whilst not understanding the science behind it, were fully aware of this non-physical world; of forces that transcended the physical to become invisible energies around us. They incorporated this knowledge into their art and designs, using symbolic representations of ‘unseen forces at work’. As an example, Aboriginal rock art, rock carvings and petroglyphs have many symbols similar to those used on woven materials by the Andean Indians. Concentric circle designs have been variously interpreted as representing water holes, vortices of energy, special places of power and simple, pleasing decorations. In another example, both the Maya and the Inca peoples incorporated these symbolic representations into the monuments and physical layout of their cities and landscapes, using this knowledge to enhance the spiritual power and energetic connection with their ‘Gods’. Indeed, the Inca city of Cusco and the Sacred Valley in Peru are believed to have been specifically designed in this way (Salazar). See the sections on Dragons in the Landscape and Machu Picchu and Moray for more details.

Works Cited

  • Earth’s Inner Core. (accessed 08/12/2020). Retrieved from Wikipedia: https://en/wikipedia.org/wiki/Earth’s_inner_core
  • Earth’s Magnetic Field. (accessed 08/12/2020). Retrieved from Wikipedia: https://en.wikipedia.org/wiki/Earth’s_magnetic_field
  • Graves, T. (1978). Needles of Stone. London: Turnstone Books.
  • Simpson, L. (1999). The Healing Energies of Earth. London: Gaia Books Limited.
  • Salazar, F. E. (1996). The Sacred Valley of the Incas, Myths and Symbols. Cusco – Peru.
  • The Internal Structure of Earth. (accessed 07/12/2020). Retrieved from Wikipedia: https://commons.wikimedia.org/wiki/index.php?curid=23966175
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