#earthscore — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #earthscore, aggregated by home.social.
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@coreyspowell
10/
In short: It’s not an apocalypse; it’s a data corrective. It proves that the engine room of our planet is a highly active, rapidly changing environment, and it took a constellation of advanced satellites sixteen years of data-crunching to finally reveal what happened right under our feet.#Geophysics
#Geomagnetism
#EarthsCore
#Geodynamics
#OuterCore
#Geodynamo
#ESASwarm
#CryoSat
#SatelliteData
#EarthObservation
#GeomagneticField
#WorldMagneticModel
#WMM -
@coreyspowell
10/
In short: It’s not an apocalypse; it’s a data corrective. It proves that the engine room of our planet is a highly active, rapidly changing environment, and it took a constellation of advanced satellites sixteen years of data-crunching to finally reveal what happened right under our feet.#Geophysics
#Geomagnetism
#EarthsCore
#Geodynamics
#OuterCore
#Geodynamo
#ESASwarm
#CryoSat
#SatelliteData
#EarthObservation
#GeomagneticField
#WorldMagneticModel
#WMM -
@coreyspowell
9/
The consequence: This study provides a practical reality check. It proves that localized, dramatic "sloshing" and regional flow reversals happen relatively frequently in the outer core as part of the earth's natural, healthy dynamic loop, without triggering a catastrophic planetary collapse. -
@coreyspowell
9/
The consequence: This study provides a practical reality check. It proves that localized, dramatic "sloshing" and regional flow reversals happen relatively frequently in the outer core as part of the earth's natural, healthy dynamic loop, without triggering a catastrophic planetary collapse. -
@coreyspowell
8/
4. Reassuring News on a "Magnetic Flip"Whenever the words "core reversal" hit the news, it tends to trigger apocalyptic sci-fi anxieties about a total geomagnetic pole reversal (which would weaken our radiation shield and disrupt global satellite grids).
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@coreyspowell
8/
4. Reassuring News on a "Magnetic Flip"Whenever the words "core reversal" hit the news, it tends to trigger apocalyptic sci-fi anxieties about a total geomagnetic pole reversal (which would weaken our radiation shield and disrupt global satellite grids).
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@coreyspowell
7/
The consequence: This specific 2010 reversal closely aligns with independent seismic observations showing changes in the behavior of the solid inner core. Tracking these massive shifts helps scientists map out exactly how the deep interior exchanges energy with the crust, directly affecting the literal spin speed of the planet. -
@coreyspowell
7/
The consequence: This specific 2010 reversal closely aligns with independent seismic observations showing changes in the behavior of the solid inner core. Tracking these massive shifts helps scientists map out exactly how the deep interior exchanges energy with the crust, directly affecting the literal spin speed of the planet. -
@coreyspowell
6/
3. Clues Into the "Length of Day" MysteryEarth's rotation isn't perfectly consistent; the length of a day micro-fluctuates over roughly 6-year cycles. Because the mantle and the core are gravitationally and electromagnetically coupled, when massive volumes of molten iron change speed or direction, it changes the planet's angular momentum.
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@coreyspowell
6/
3. Clues Into the "Length of Day" MysteryEarth's rotation isn't perfectly consistent; the length of a day micro-fluctuates over roughly 6-year cycles. Because the mantle and the core are gravitationally and electromagnetically coupled, when massive volumes of molten iron change speed or direction, it changes the planet's angular momentum.
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@coreyspowell
5/
The consequence: When the core shifts, the WMM drifts out of accuracy faster than expected. High-precision satellite data from missions like Swarm are practically used to issue emergency or accelerated updates to these navigation models so global GPS and autopilot systems don't suffer tracking errors. -
@coreyspowell
5/
The consequence: When the core shifts, the WMM drifts out of accuracy faster than expected. High-precision satellite data from missions like Swarm are practically used to issue emergency or accelerated updates to these navigation models so global GPS and autopilot systems don't suffer tracking errors. -
@coreyspowell
4/
2. Refining Global Navigation Models (WMM)While a regional flow reversal doesn't flip the whole planet's magnetic field, it does alter the localized shape and strength of the geomagnetic field above the Pacific. Tech infrastructure relies heavily on the World Magnetic Model (WMM)—the digital map embedded in every smartphone, airplane navigation system, and military defense radar to translate "magnetic north" into "true north."
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@coreyspowell
4/
2. Refining Global Navigation Models (WMM)While a regional flow reversal doesn't flip the whole planet's magnetic field, it does alter the localized shape and strength of the geomagnetic field above the Pacific. Tech infrastructure relies heavily on the World Magnetic Model (WMM)—the digital map embedded in every smartphone, airplane navigation system, and military defense radar to translate "magnetic north" into "true north."
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@coreyspowell
3/
The consequence: Discovering that a massive region of liquid iron the size of an ocean can abruptly change direction within a single decade means the core is far more turbulent, chaotic, and fast-moving than previously modeled. Scientists now have to completely rewrite their core-surface flow algorithms. -
@coreyspowell
3/
The consequence: Discovering that a massive region of liquid iron the size of an ocean can abruptly change direction within a single decade means the core is far more turbulent, chaotic, and fast-moving than previously modeled. Scientists now have to completely rewrite their core-surface flow algorithms. -
@coreyspowell
2/
The practical and scientific consequences break down into a few key areas:1. It Explodes a Long-Standing Geophysics Assumption
For centuries—ever since Edmond Halley noticed it in the 1600s—scientists tracked a steady, predictable "westward drift" of Earth's magnetic field features. Models of Earth's internal dynamo were largely built on the idea that this large-scale outer core circulation was stable and mostly uniform.
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@coreyspowell
2/
The practical and scientific consequences break down into a few key areas:1. It Explodes a Long-Standing Geophysics Assumption
For centuries—ever since Edmond Halley noticed it in the 1600s—scientists tracked a steady, predictable "westward drift" of Earth's magnetic field features. Models of Earth's internal dynamo were largely built on the idea that this large-scale outer core circulation was stable and mostly uniform.
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On a day-to-day level for the average person, the immediate practical consequences are effectively zero. No alarms went off in 2010, the ground didn't shake, and your compass didn't suddenly flip backward.
However, within the realms of geophysics, satellite operation, and our understanding of how the planet functions, this discovery (published by the University of Edinburgh using ESA Swarm data) is a massive deal.
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On a day-to-day level for the average person, the immediate practical consequences are effectively zero. No alarms went off in 2010, the ground didn't shake, and your compass didn't suddenly flip backward.
However, within the realms of geophysics, satellite operation, and our understanding of how the planet functions, this discovery (published by the University of Edinburgh using ESA Swarm data) is a massive deal.
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From CNN.com: ‘It’s almost science fiction’: Scientists say the shape of Earth’s inner core is changing
https://www.cnn.com/2025/02/10/science/earth-inner-core-changing-shape?cid=ios_app
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From CNN.com: ‘It’s almost science fiction’: Scientists say the shape of Earth’s inner core is changing
https://www.cnn.com/2025/02/10/science/earth-inner-core-changing-shape?cid=ios_app
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What exactly it would take to penetrate deep into the Earth, clear to the core? This is about the only proposal in the realm of real science I've been able to find, and it's a doozy (think: nuclear warheads, molten iron, and seismic-wave transmissions).
#geology #science #journeytothecenteroftheearth #subterranean #nuclear #exploration #EarthsCore #Earth
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What exactly it would take to penetrate deep into the Earth, clear to the core? This is about the only proposal in the realm of real science I've been able to find, and it's a doozy (think: nuclear warheads, molten iron, and seismic-wave transmissions).
#geology #science #journeytothecenteroftheearth #subterranean #nuclear #exploration #EarthsCore #Earth
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What’s going on with Earth’s core? Neil deGrasse Tyson and comedian Chuck Nice give an astrophysicist’s take on reports that the Earth’s core is slowing. Find out how planets are formed and what the composition of the Earth’s interior is.
Neil deGrasse Tyson Explains Earth's Spinning Core -
Puzzled #Scientists Reveal That The #EarthsCore Just Stopped Spinning
Geophysicists trying to understand why Earth's core stopped rotating & is potentially reversing. Nature has made puzzling responses to world’s changing #climate. New discoveries about the effects #planet interior has on surface might help world better understand & prepare for effects of #climatechange. Full scope of effects not yet known.
The #planet has had enough of us and our wilful destruction
https://www.giantfreakinrobot.com/sci/earths-core-stopped-spinning.html
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The paper "The inherent instability of axisymmetric magnetostrophic dynamo models", written by Colin Hardy, Phil Livermore and myself, is now published online in the journal Geophysical & Astrophysical Fluid Dynamics.
Link (open access): https://www.tandfonline.com/doi/full/10.1080/03091929.2022.2148666
Below I will give a (relatively) non-technical explanation of some background of our paper.
#geomagnetism #geodynamo #EarthsCore #magnetohydrodynamics #magnetostrophic
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The paper "The inherent instability of axisymmetric magnetostrophic dynamo models", written by Colin Hardy, Phil Livermore and myself, is now published online in the journal Geophysical & Astrophysical Fluid Dynamics.
Link (open access): https://www.tandfonline.com/doi/full/10.1080/03091929.2022.2148666
Below I will give a (relatively) non-technical explanation of some background of our paper.
#geomagnetism #geodynamo #EarthsCore #magnetohydrodynamics #magnetostrophic
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Explosion of #life on #Earth linked to heavy #metal act at planet’s centre | #Evolution | The Guardian
Linked to the Earth’s #Core and the #MagneticField it produces.
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Earth’s core too hot ‘n heavy for oxygen, but may have rusty coating - Enlarge (credit: Hubble Site)
We live on the most comfortable of planets. It may not be too visib... more: https://arstechnica.com/?p=1598901 #quantumchemistry #earthscore #science