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#geomagnetism

1 post1 participant0 posts today
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Koen Hufkens, PhD

🌍 after watching "The Core" the other day (fluff B-movie involving the earth's magnetic field), I was reminded to update my #rstats International Geomagnetic Reference Field {igrf} package. The package now uses version 14 parameters as released late 2024.

bluegreen-labs.github.io/igrf/

bluegreen-labs.github.ioInternational Geomagnetic Reference FieldThe 14th generation International Geomagnetic Reference Field (IGRF). A standard spherical harmonic representation of the Earth's main field.
#IGRF#geomagnetism#geology
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💧🌏 Greg Cocks

May’s Huge Geomagnetic Storm Created A Previously Unseen Vortex In Earth’s Atmosphere
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iflscience.com/mays-huge-geoma <-- shared technical article
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doi.org/10.1029/2024GL110632 <-- shared paper
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doi.org/10.1029/2024GL110506 <-- shared paper
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doi.org/10.1038/s41467-023-417 <-- shared paper
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#GIS #spatial #mapping #magneticstorm #spaceweather #model #modeling #geomagnetism #solar #sun #CME #coronalmassejection #solarflare #aurora #geophysics #GOLD #remotesensing #satellite #nasa #thermosphere #atmosphere #ionosphere #aircurrents #poles #earth #magneticfield #swirlypatterns #Equatorial #EIA #Ionization #Anomaly ##

graphic - The pathways of the main sources of plasma to the plasma sheet during southward IMF are illustrated in a schematic of Earth’s magnetosphere (based on Fig. 1 of ref. 1). The arrows represent the approximate paths of the different sources. Orange indicates the solar wind, coming in through the dayside magnetopause due to reconnection, and flowing along lobe field lines that convect to the plasma sheet. Green represents the hot outflow from the dayside (cusp) and nightside auroral regions. Blue represents the polar wind, outflowing from the polar cap. These sources mix in the plasma sheet with the contribution of the different sources changing with time.
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image - Invisible 'swirly patterns' were detected in the thermosphere for the first time ever
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graphics / global maps - GOLD Level 2 data showing temporal and spatial evolution of the thermosphere during the storm on May 11. The first and second rows are the 1356 Å and LBH absolute radiances used as input to the ΣO/N2 algorithm, while the last two rows show GOLD ΣO/N2 and TDISK values. Full disk images shown are combined individual north and south hemisphere scans. Times listed at the top of each row are the time the north hemisphere scan started. A scan beginning at 08:10 UT with minimal dayside data is not shown. The black line indicates the geomagnetic equator.
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global map - mean total electron content (TEC; in log base 10 scale TECu) from 15:25–15:50 UT (25-min average) projected onto the geographic map. Notice the spatial morphology over South America that is also seen in ΣO/N2 and TDISK (see Figures 2 and 3). The structure is seen forming around 11:00 UT and is visible until about 18:00 UT... The magnetic equator (and ±15° magnetic latitudes) are shown in magenta for reference.
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💧🌏 Greg Cocks

On The Uncertain Intensity Estimate Of The 1859 Carrington Storm
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doi.org/10.1051/swsc/2024015 <-- shared paper
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en.wikipedia.org/wiki/Carringt <-- background on the Carrington Event
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["The big one", if it happened today we would be right royally %^#$& (excuse my pretend language 😉 ), we are nowhere close to being hardened, etc; my other ½ is a space weather scientist, until I knew her I was not fully aware of all the risks and hazards associated with space weather]
#GIS #spatial #mapping #Magneticstorm #spaceweather #historicalevent #statisticalanalysis #spatialanalysis #geostatistics #model #modeling #geomagneticstorm #geomagnetism #solar #sun #risk #hazard #infrastructure #CME #coronalmassejection #solarflare #blackouts #humanimpacts #electricpowergrid #CarringtonEvent #numericmodel #aurora #usgs #space #geophysics #naturalhazards #extremeevents

schematic - some of the impacts from and monitoring of space weather events
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annotated schematic - the Carrington Event
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photo - Icarus Brewing's pale ale, Carrington Event
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photo - aurora from geomagnetic storm / space weather over high tension electric power line
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💧🌏 Greg Cocks

Geologists Stunned On Discovering A Part Of The Earth That Disappeared 20 Million Years Ago
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good.is/geologists-stunned-at- <-- shared technical article
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doi.org/10.1016/j.gr.2023.09.0 <-- shared paper
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youtu.be/VyEUWySaFPc?si=rzUiIh <-- reconstruction animation
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#GIS #spatial #mapping #remotesensing #geomagnetism #argoland #kinematicreconstruction #platetectonics #GPlates #junctionregion #PhilippineSeaPlate #Borneo #NewZealand #Japan #Zealandia #Philippines #NewGuinea #junction #subduction #plates #geology #structuralgeology #pontus #pontusplate #paeleogeography #geologichistory #Zealandia #seismology #spatialanalysis #spatiotemporal #tomography #model #modeling

maps - paleogeography over time
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maps - the Pangea-Tethys and Panthalassa plate tectonic realms separated by the Juction Region
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map - tectonics of the Philippine Sea Plate, highlighting the different microplates that formed as a result of oceanic spreading at different spreading centers
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map - reconstructed region
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💧🌏 Greg Cocks

Recently Completed Geophysical Survey Will Help Protect Critical Infrastructure From Geomagnetic Storms And Space Weather
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usgs.gov/news/national-news-re <-- shared technical article
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[my other ½ is a space weather scientist, until I knew her I was not fully aware of all the risks and associated hazards associated with space weather]
#GIS #spatial #mapping #spaceweather #power #telecom #critical #infrastructure #risk #hazard #geomagnetic #geomagneticstorm #geomagnetism #minerals #geothermal #mining #earth #electricpower #powergrid #impacts #conductivity #USMTArray #magnetotellurics #geology #rocks #geophysics #spatialanalysis #spatiotemporal #array #USA #hazardanalysis #powersystems #transformers #powerfailures #lossofpower #blackouts #overloads
@USGS @NSF @nasa @EarthScope @NOAA

map - Complete USMTArray and community magnetotelluric surveys in North America as of June 27, 2024. Magnetotelluric sites are distributed across the continental US and are represented with hundreds of inverted triangles including orange (EarthScope), blue (MTArray), red (NRCan Lithoprobe), black (USGS) and clear (other surveys). Magetic observatories are indicated with stars, three red (NRCan) and six black (USGS). Ten USGS variometers are indicated with pink 4-point stars.
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graphic / schematic - spaceweather possible impacts
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photo - Northern Lights over high voltage powerlines
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screenshot - NOAA space weather prediction center geoelectric field map model
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💧🌏 Greg Cocks

Why Northern Lights Viewing Is About To Get More Magical [video]
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bbc.com/reel/video/p0hn4861/wh <-- shared media article
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“Before satellite technology brought us answers, the Northern Lights were a mysterious and unexplained phenomena, long woven into the legends of Arctic communities. Occurring in the polar regions, this colourful light show is caused when particles from the Sun hit the Earth's atmosphere. Around this year or next, it is anticipated that the solar cycle will peak and a period of more intense and complex Northern Lights will follow…”
#spaceweather #solarcycle #solar #magneticfield #remotesensing #satellite #GOES #research #geomagnetism #NorthernLights #auroraborealis #arctic #polar

photo - Northern Lights, Arctic
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photo - Northern Lights, Arctic
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photo - Northern Lights, Arctic
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image - coronal mass ejection at sun's surface
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💧🌏 Greg Cocks

AuroraSaurus – Reporting Auroras From The Group Up [citizen science]
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aurorasaurus.org/ <-- link to web map / data / home page
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youtu.be/opkLAoRdbHA?si=J_QIgz <-- video overview
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“Auroras, sometimes called “northern lights” or “southern lights," are mesmerizingly beautiful. To scientists, auroras are also the visible manifestation of the solar wind - the flow of charged particles from the Sun - interacting with the magnetosphere of the Earth. Help track auroras around the world with the Aurorasaurus project! Each verified report of an aurora serves as a valuable data point for scientists who model these phenomena…”
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#GIS #spatial #mapping #citizenscience #aurora #AuroraBorealis #spaceweather #mapping #global #opendata #northernlights #southernlights #AuroraAustralis #solarwind #CME #magnetosphere #Aurorasaurus #plasma #magnetism #magneticfield #earthmagnetism #geomagnetism #ionosphere

screen shot - AuroraSaurus web map / data page
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chart - solar wind power (related to auroral strength) vs time
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logo - AuroraSaurus
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photo - Aurora Borealis over ice / snow
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