https://www.europesays.com/ie/703320/ Gravitational torque drives multidecadal variations in length of day #CoreProcesses #Éire #Geodynamics #Geomagnetism #geophysics #HumanitiesAndSocialSciences #IE #Ireland #multidisciplinary #Physics #Science
#geomagnetism — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #geomagnetism, aggregated by home.social.
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Gravitational torque drives multidecadal variations in length of day
Torque and changes in the LOD An axial torque Γz acting on the mantle causes a change in…
#NewsBeep #News #Physics #CA #Canada #Coreprocesses #Geodynamics #Geomagnetism #Geophysics #HumanitiesandSocialSciences #multidisciplinary #Science
https://www.newsbeep.com/ca/907147/ -
Gravitational torque drives multidecadal variations in length of day
Torque and changes in the LOD An axial torque Γz acting on the mantle causes a change in…
#NewsBeep #News #Physics #AU #Australia #Coreprocesses #Geodynamics #Geomagnetism #Geophysics #HumanitiesandSocialSciences #multidisciplinary #Science
https://www.newsbeep.com/au/903033/ -
https://www.europesays.com/uk/1219503/ Gravitational torque drives multidecadal variations in length of day #CoreProcesses #Geodynamics #Geomagnetism #geophysics #HumanitiesAndSocialSciences #multidisciplinary #Physics #Science #UK #UnitedKingdom
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How Severe Space Weather Could Affect UK Infrastructure.
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How Space Weather Could Bust The AI Boom
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https://spacenews.com/how-space-weather-could-bust-the-ai-boom/ <-- shared technical article
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https://futurism.com/artificial-intelligence/ai-data-centers-electric-grid-meltdown <-- shared technical article, “AI Data Centers Pushing Electric Grid Into Meltdown”
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https://doi.org/10.1146/annurev-earth-032524-012356 <-- shared 2026 paper, “Magnetic Storms and Geoelectric Hazards”
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#AI #datcenters #infrastructure #impacts #solarstorms #spaceweather #risk #hazards #overloading #electricity #energy #powersupply #energygrid #vulnerable #transmission #energy #demand #consumers #geoelectrical #geomagnetism #blackout #damage #cost #economics #equipment #transformers #carringtonevent #NERC #grid #reliability #electricaldemand #utilities #magneticstorm #electromagneticinduction #extremeevent #historicalevent #hazardanalysis #spaceweather #history #Carrington #geoelectric #humanimpacts #risk #hazard #monitoring #network #geology #geomagnetism #impedance #rock #soil #utilities #electricaltransmission #powerlines #magnetotelluric #sensor #blackout #brownout #energy #geoelectrichazard #geoelectric #GIS #spatial #mapping #spatialanalysis #spatiotemporal #model #modeling #geomagnetism #geomagneticstorm #telecommunication #electronics #hardened #geography #mitigation #preparedness #geomorphology #geomorphometry #surfacegeology #cost #economics #disaster #impacts #technology #InternetOfThings #internet #USA #review #CONUS #numericalmodeling #realtimemonitoring #AIBoom #Bust
@North American Electric Reliability Corporation (NERC) -
NASA's Parker Solar Probe Flew In And Out Of The Solar Corona And Found A Source Of High-Energy Particles That No Existing Model Had Predicted
(When NASA's Parker Solar Probe passed through the solar corona during perihelion encounters at the heliospheric current sheet, its instruments recorded energetic protons at energies far above what existing models of particle acceleration at that location could account for.)
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https://spacedaily.com/n-nasas-parker-solar-probe-flew-in-and-out-of-the-solar-corona-and-found-a-source-of-high-energy-particles-that-no-existing-model-had-predicted/ <-- shared technical article
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https://doi.org/10.3847/2041-8213/ae3ca1 <-- shared paper
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https://www.space.com/high-energy-particles-source-space-weather <-- shared technical article
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https://youtu.be/Woo4yZby4BU?si=rzzND3qJkubGKyTo <-- shared space weather overview effects video, #AIslop notwithstanding 🙃 🫠 😉
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“… A team… at the Southwest Research Institute… and… the University of Maryland’s Institute for Research in Electronics and Applied Physics has published an analysis of those measurements [link above]…, identifying magnetic reconnection at the heliospheric current sheet as the mechanism responsible. The proton energies detected were, in the study’s framing, approximately a thousand times greater than the available magnetic energy per particle that models of this process had predicted.
The finding matters for two reasons: it identifies a source of energetic particles close to the Sun that was not anticipated, and it raises questions about how far the existing understanding of reconnection-driven particle acceleration extends…
The Parker measurements suggest that picture needs revision. The magnetic island merging mechanism [the authors] identif[ied] can evidently produce proton populations at energies that challenge the boundary between what reconnection does and what shock acceleration does. Whether this source can explain a significant fraction of observed near-Earth energetic particle events, or whether it contributes mainly at energies and scales that remain confined close to the Sun, is a question the paper does not yet resolve…
Solar Orbiter, the European Space Agency mission operating in coordination with Parker, offers complementary measurements at somewhat greater distances. Comparing what the two spacecraft measure of the same particle populations as they propagate outward from the Sun will help establish which features originate close to the source and which are modified by the intervening solar wind. The energetic particle observations that puzzled researchers in the pre-Parker era now have a candidate mechanism. Whether that mechanism accounts for a large or small fraction of what actually reaches Earth remains the open question…”
#sun #solar #solarsystem #heliosphere #Parker #SolarOrbiter #spacecraft #research #monitoring #instrumentatin #spaceweather #solarflare #coronalmassejection #CME #NASA #ESA #magnetism #geomagnetism #proton #energy #particleacceleration #measurement #solarwind #risk #hazard #impacts #corona #perihelion #model #modeling
@nasa @esa -
Magnetic Storms And Geoelectric Hazards
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https://doi.org/10.1146/annurev-earth-032524-012356 <-- shared paper / annual review
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#magneticstorm #electromagneticinduction #extremeevent #historicalevent #hazardanalysis #spaceweather #history #Carrington #geoelectric #humanimpacts #risk #hazard #monitoring #network #geology #geomagnetism #impedance #rock #soil #utilities #electricaltransmission #powerlines #magnetotelluric #sensor #magnetometer #blackout #brownout #energy #geoelectrichazard #geoelectric #geostatics #GIS #spatial #mapping #spatialanalysis #spatiotemporal #model #modeling #geomagnetism #geomagneticstorm #telecommunication #electronics #hardened #geography #mitigation #preparedness #geomorphology #geomorphometry #surfacegeology #cost #economics #disaster #impacts #technology #InternetOfThings #internet #USA #review #CONUS #numericalmodeling #realtimemonitoring -
Scientists Investigate a Reversal in a Large Flow Region of Earth's Outer Core Detected in 2010
📰 Original title: Something Made Earth's Molten Core Reverse Direction In 2010
🤖 IA: It's clickbait ⚠️
👥 Users: It's clickbait ⚠️ -
Scientists Investigate a Reversal in a Large Flow Region of Earth's Outer Core Detected in 2010
📰 Original title: Something Made Earth's Molten Core Reverse Direction In 2010
🤖 IA: It's clickbait ⚠️
👥 Users: It's clickbait ⚠️ -
@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
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
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
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
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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QUANTUM SENSOR TESTS LIMITS OF EARTH'S MAGNETIC FIELD MEASUREMENT
A small quantum sensor on the ISS measured Earth's magnetic field for 10 months. This could make future space missions cheaper and smaller.
#QuantumSensor, #SpaceMission, #MagneticField, #ISS, #Geomagnetism
https://newsletter.tf/quantum-sensor-measures-earth-magnetic-field-iss/
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A new quantum sensor, the size of a grapefruit, worked on the ISS for 10 months, measuring Earth's magnetic field. This is much smaller than old sensors.
#QuantumSensor, #SpaceMission, #MagneticField, #ISS, #Geomagnetism
https://newsletter.tf/quantum-sensor-measures-earth-magnetic-field-iss/ -
The United States Magnetotelluric Array And The National Impedance Map
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https://doi.org/10.1029/2024RG000850 <-- shared paper
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https://eos.org/features/magnetic-storms-induction-hazards <-- shared ‘overview’ EOS 2014 technical article
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https://doi.org/10.3389/fspas.2025.1742847 <-- shared technical editorial
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#GIS #spatial #mapping #spaceweather #US #magnetotelluric #stations #monitoring #network #array #USMTArray #opendata #instrumentation #qualitycontrol #dataprocessing #archiving #electricalconductivity #3D #model #modeling #geology #geomagnetism #crust #mantle #CONUS #visualisation #geomagnetic #infrastructure #electricity #electricalgrid #utilities #publicgood #fedscience #fedservice #risk #hazard #mitigation #impacts #geothermal #mineralresources #exploration #magneticstorm #geoelectrichazard #earthscience #NationalImpedanceMap #conductivity #research -
Geosurvey Reveals Hidden Australia Magnetic Anomaly
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https://www.csiro.au/en/news/All/Articles/2026/January/Australia-magnetic-anomaly <-- shared CSIRO (Australia) technical article
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https://research.csiro.au/potential-fields/ <-- shared CSIRO ‘Potential Field Geophysics’ home page
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https://www.sciencebase.gov/catalog/item/6193e9f3d34eb622f68f13a5 <-- shared @USGS tri-national (Canada, USA and Australia) geologic, geophysics, and mineral resource data release / report
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https://www.ga.gov.au/scientific-topics/disciplines/geophysics/airborne-electromagnetics <-- shared Australian government airmag overview page
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https://doi.org/10.5382/Mono.06.30 <-- shared paper, “The Contribution Of High Resolution Aeromagnetics To Archean Gold Exploration In The Kalgoorlie Region, Western Australia”
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#CriticalMinerals #GIS #spatial #Mapping #CriticalMineralsMappingInitiative #geology #structuralgeology #mineralresources #exploration #discovery #remotesensing #model #modeling #mining #economics #Australia #NorthernTerritory #MagneticAnomaly #AustraliaMagneticAnomaly #geomagnetism #openscience #opendata #openaccess #geoscience #geophysics #aeromagneticsurvey #aeromagnetic #spatialanalysis #CSIRO
@CSIRO -
Top Geophysicist: “If the Magnetic Poles Flip, Humanity Could Be DONE For”
In this eye-opening interview, geophysicist Stefan Burns breaks down the real risks of a geomagnetic pole reversal. Earth’s magnetic field protects us from harmful solar and cosmic radiation, but during a flip, it weakens significantly—potentially exposing technology, infrastructure,
#geomagnetism #polereversal #solarradiation #cosmicchallenges #magnetism #science #physics
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Earth's Magnetic Shield Protecting The Planet From A Pelting By The Solar Wind
See how the sun's energy drives a remarkable planetary engine, the climate
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https://youtu.be/6hD52H7rQak?si=OBGYbK8Czbi0uwlc <-- shared video
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[‘cannibalising’ (sic) my own post (!) to bring attention to this outstanding video visualisation and overview, science education/explanation at its finest!; narrated so well (of course!) by #liamneeson !!]
#GIS #spatial #mapping #geology #structuralgeology #magneticfield #SouthAtlanticAnomaly #SAA #spaceweather #geomagnetism #risk #hazard #hardening #magneticfieldstrength #protection #CME #coronalmassejection #sun #solar #solarwind #visualisation #visualization #education #scienceeducation #overview #explanation
#NASA -
NASA Is Watching a Huge Anomaly Growing in Earth's Magnetic Field [SAA]
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https://www.sciencealert.com/nasa-is-watching-a-huge-anomaly-growing-in-earths-magnetic-field <-- shared technical article
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https://youtu.be/qpdQcw_52iM?si=Hn0EZkOGJOMihC71 <-- shared @nasa video - “NASA Explores Earth's Magnetic 'Dent'”
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https://en.wikipedia.org/wiki/South_Atlantic_Anomaly <-- shared SAA wiki
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https://youtu.be/6hD52H7rQak?si=OBGYbK8Czbi0uwlc <-- shared video – “Watch [a visualisation of how the] Earth's magnetic shield protect[s] the planet from a pelting by the solar wind…” [narrated so well (of course!) by #liamneeson !!!!]
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#GIS #spatial #mapping #remotesensing #earthobservation #geology #structuralgeology #magneticdent #magneticanomaly #magneticfield #SouthAtlanticAnomaly #SAA #spaceweather #geomagnetism #satellite #SWARM #orbitalspacecraft #spacecraft #risk #hazard #hardening #magneticfieldstrength #protection #CME #coronalmassejection #sun #solar #solarwind #NASA #ESA
@[email protected] @esa -
Shock demagnetization in an ambient magnetic field at the Dhala impact structure, India
Louzada, K. L., Stewart, S. T., Weiss, B. P., Gattacceca, J. & Bezaeva, N. S. Shock and static…
#NewsBeep #News #Physics #EarthSciences #environment #general #Geomagnetism #Meteoritics #Palaeomagnetism #Science #UK #UnitedKingdom
https://www.newsbeep.com/uk/364878/ -
Shock demagnetization in an ambient magnetic field at the Dhala impact structure, India
Louzada, K. L., Stewart, S. T., Weiss, B. P., Gattacceca, J. & Bezaeva, N. S. Shock and static…
#NewsBeep #News #Physics #AU #Australia #EarthSciences #Environment #general #Geomagnetism #Meteoritics #Palaeomagnetism #Science
https://www.newsbeep.com/au/406173/ -
Shock demagnetization in an ambient magnetic field at the Dhala impact structure, India
Louzada, K. L., Stewart, S. T., Weiss, B. P., Gattacceca, J. & Bezaeva, N. S. Shock and static…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #EarthSciences #Environment #general #Geomagnetism #Meteoritics #Palaeomagnetism #Science
https://www.newsbeep.com/us/400857/ -
https://www.europesays.com/uk/688765/ Shock demagnetization in an ambient magnetic field at the Dhala impact structure, India #EarthSciences #Environment #general #Geomagnetism #Meteoritics #Palaeomagnetism #Physics #Science #UK #UnitedKingdom
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Dungey Cycle (Planetary science 🪐)
The Dungey cycle, officially proposed by James Dungey in 1961, is a phenomenon that explains interactions between a planet's magnetosphere and solar wind. Dungey originally proposed a cyclic behavior of magnetic reconnection between Earth's magnetosphere and flux of solar wind. This reconnection explained previously observed dynamics withi...
https://en.wikipedia.org/wiki/Dungey_Cycle
#DungeyCycle #Geomagnetism #SpacePlasmas #SolarPhenomena #PlanetaryScience
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A Rare Alignment Is On The Move. 🧭 [Three Norths]
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https://www.ordnancesurvey.co.uk/news/three-norths-departing-england <-- shared technical article
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https://youtu.be/18kQrt3KCbM?si=a9fXvjAbrgTU8ylx <-- shared video overview
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“On 13 December, the rare alignment of true north, magnetic north and grid north - known as the three norths - leaves England at Berwick-upon-Tweed, bringing a remarkable three-year chapter to a close.
Magnetic north is monitored using geomagnetic data from the British Geological Survey, combined with Ordnance Survey’s National Grid to track how this alignment shifts over time..."
#truenorth #magneticnorth #gridnorth #UK #coincidence #navigation #threenorths #alignment #GIS #spatial #mapping #projection #globe #north #model #modeling #magnetism #geomagnetism #England #survey #triplealignment #NationalGrid
@Ordnance Survey -
U.S. Geological Survey [#USGS] Geomagnetic Variometer Data - Capitalizing On Seismic Infrastructure
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https://doi.org/10.1785/0220250185 <-- shared paper
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#geomagnetic #geomagnetism #USGS #USA #CONUS #seismology #seismograph #measurement #spatialanalysis #spatial #stations #SeismographicNetwork #magneticfield #readings #spatiotemporal #magnetometer #collabration #spaceweather #risk #hazard #colocation #magneticstorm #earthquake #interdisciplinary #research #sampling #multidisciplinary #fielddata #mapping #GIS #cohosted #corrleation #sampling #fedscience #fedservice #publicgood
#USGS -
Mapping a Carrington Storm [in today's setting]
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https://doi.org/10.1029/2025GL116835 <-- shared paper
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#spatial #mapping #spaceweather #Carrington #magneticstorm #historicstorm #model #modeling #spatialanalysis #map #impacts #humaninpacts #geomagnetism #magneticfield #geoelectric #field #magnetotelluric #geophysics #USA #infrastructure #geology #sedimentology #geopotential #communications #utilities #energy #powertransmission #blackouts #rik #hazard #damage #publicsafety #cost #economy #mitigation #benchmark #remotesensing #earthobservation -
Earth’s 8th Continent Buried Under The Pacific Finally Mapped By Scientists [Zealandia / Te Riu-a-Māui - “Finally”? ~wink~]
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https://dailygalaxy.com/2025/10/earth-8th-continent-finally-mapped/ <-- shared (somewhat) technical article
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https://doi.org/10.1029/2023TC007961 <-- shared 2023 paper
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https://youtu.be/DDbc4K7bgnA?si=EZFmmPFybPLLyND7 <-- shared animation
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"KEY POINTS
• Basalts and pebbly to cobbly sandstones have been dredged from the Fairway Ridge, Coral Sea
• Dating of the rocks and interpretation of magnetic anomalies allow mapping of major geological units across North Zealandia
• This work completes offshore reconnaissance geological mapping of the entire 5 million square km Zealandia continent…”
#geology #doggerland #Zealandia #TeRiuaMaui #godwana #godwanaland #cretaceous #mapping #geologicmapping #spatialanalysis #model #modeling #NewZealand #SouthPacific #continent #sampling #sediment #dredging #petrography #geochemistry #isotope #analyses #research #cenozoic #intraplate #platetectonics #tectonics #eocene #remotesensing #geophysics #geomagnetism -
14,000 Years Ago, The Most Powerful Solar Storm Ever Recorded Hit Earth - This Event Establishes A New Worst-Case Scenario
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https://www.space.com/astronomy/sun/14-000-years-ago-the-most-powerful-solar-storm-ever-recorded-hit-earth-this-event-establishes-a-new-worst-case-scenario <-- shared technical article
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https://doi.org/10.1016/j.epsl.2025.119383 <-- shared paper
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“A storm as ferocious as the one of 12,350 BC would likely cause complete mayhem if it were to strike Earth and its surrounding space today..."
#spaceweather #prehistoric #extremesolarparticleevents #CCMSOCOL #14CEx #Radiocarbon #GlacialEpoch #solarstorm #infrastructure #risk #hazard #radiocarbon #IceAge #model #modeling #glacial #climate #geomagnetism #magnetic #protons #carbon14 #Quaternary #geology #treerings -
The March 1940 Superstorm - Geoelectromagnetic Hazards And Impacts On American Communication And Power Systems
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https://doi.org/10.1029/2022SW003379 <-- shared paper
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#spaceweather #geomagnetic #history #historic #1940 #USA #measurement #spatialanalysis #geomagnetism #risk #hazard #effects #ICME #CME #coronalmassejection #interference #electricity #electrical #utilities #infrastructure #impacts #communications #telecommunications #geoelectromagnetic #solarwind #magneticstorm #humanimpacts #geoelectric #geology #soil #operations #transmission #power #energy #energysupply #naturalhazard@USGS | @CIRES -
Sea Turtles Dance To Orientate With Earth's Magnetic Field, Study Reveals
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https://www.sciencealert.com/sea-turtles-dance-to-orientate-with-earths-magnetic-field-study-reveals <-- shared technical article
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https://doi.org/10.1038/s41586-024-08554-y <-- shared paper
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#GIS #spatial #mapping #navigation #turtle #seaturtles #global #magnetism #magnetic #Earth #magneticfield #geomagnetism #animals #migration #magnetoreception #turtledance #spatialanalysis #spatiotemporal #migratory #compass #position #geography #magneticmap #magneticcoordinates #destination #magneticsignature #loggerhead #foraging
