#geomagneticstorm — Public Fediverse posts

🌞 A Plan to Stop Solar Storms From Sending Us Back to the Stone Age

｢ Far out in space, where geostationary satellites orbit, a half-dozen school-bus-size satellites crack open and start dumping barium, lithium or sodium. Within minutes, sunlight transforms this material into an ionized gas shield that slows the oncoming massive blob of plasma ｣

https://www.wsj.com/science/space-astronomy/solar-storm-what-is-stormwall-e2ca1823

#science #geomagneticstorm #solarstorm #space

Could a powerful geomagnetic storm be the reason 8,000 Victorian homes suddenly lost power in January this year?

I had a chat with Dr Richard Marshall from Australian Bureau of Meteorology Space Weather about the origin of solar storms and the risks they present to our communities and critical infrastructure.

So great to be able to have such fantastic and professional insights about these important events and how we, as a society, need to mitigate against them.

https://www.spaceaustralia.com/feature/earthly-impacts-solar-storms

📸 NASA SVS

#SpaceAustralia #SolarStorm #geomagneticstorm #Astrodon #heliophysics

If you have issues today on the #AmateurRadio #HamRadio #HFbands, BLAME HER! #Solarcycle25 #SolarStorms #SolarStorm #Geomagneticstorm #SpaceWeather #Spacewx

Not one to shy away from a challenge; not going to let a somewhat dismal #spaceweather #spacewx forecast hinder my #amateurradio #hamradio #pota #parksontheair activation this morning. In less than an hour made forty #qrp #morsecode contacts on 40 meters during a #solarcycle25 K5 index #geomagneticstorm.

Experimenting with different configurations of 40 - 15 meter #linkedefhw with #qrpguys mini tuner while hunting #parksontheair #pota #sota #summitsontheair and #DX into Europe. Due to #geomagneticstorm from Earth facing #coronalhole #hfbands were noisy. #solarcycle25 #spaceweather #spacewx

I built a #QRPGuys 40-10 #Minituner a few years ago but never built a wire for it. Thanks to current #Geomagneticstorm conditions, I built a 40 -15 Meter Linked #EFHW that I can use with my #Youkits #YouKitsHB1B #HB1B and my #QRPlabs #QDX. #AmateurRadio #HamRadio is so much fun!

I built a #QRPGuys 40-10 #Minituner a few years ago but never built a wire for it. Thanks to current #Geomagneticstorm conditions, I built a 40 -15 Meter Linked #EFHW that I can use with my #Youkits #YouKitsHB1B #HB1B and my #QRPlabs #QDX. #AmateurRadio #HamRadio is so much fun!

I built a #QRPGuys 40-10 #Minituner a few years ago but never built a wire for it. Thanks to current #Geomagneticstorm conditions, I built a 40 -15 Meter Linked #EFHW that I can use with my #Youkits #YouKitsHB1B #HB1B and my #QRPlabs #QDX. #AmateurRadio #HamRadio is so much fun!

I built a #QRPGuys 40-10 #Minituner a few years ago but never built a wire for it. Thanks to current #Geomagneticstorm conditions, I built a 40 -15 Meter Linked #EFHW that I can use with my #Youkits #YouKitsHB1B #HB1B and my #QRPlabs #QDX. #AmateurRadio #HamRadio is so much fun!

I built a #QRPGuys 40-10 #Minituner a few years ago but never built a wire for it. Thanks to current #Geomagneticstorm conditions, I built a 40 -15 Meter Linked #EFHW that I can use with my #Youkits #YouKitsHB1B #HB1B and my #QRPlabs #QDX. #AmateurRadio #HamRadio is so much fun!

Ancient #SolarStorm smashed Earth at wrong part of the sun's cycle — and scientists are concerned

The 9,200-year-old storm left researchers with a stark conclusion: We are not ready for the next one.

By Brandon Specktor
published January 28, 2022

"An extremely powerful solar storm pummeled our planet 9,200 years ago, leaving permanent scars on the #ice buried deep below #Greenland and #Antarctica.

"A new study of those ancient ice samples has found that this previously unknown storm is one of the strongest outbursts of solar weather ever detected and would have crippled modern communications systems if it had hit Earth today.

"But perhaps most surprising, the massive storm appears to have hit during a #SolarMinimum, the point during the sun's 11-year cycle when solar outbursts are typically much less common, according to the study, published Jan. 11 in the journal Nature Communications. Because of this unexpected discovery, the study researchers are concerned that devastating solar storms could hit when we least expect them — and that Earth might not be prepared when the next big one arrives.

"Solar storms occur when magnetic field lines on the sun's corona (the outermost part of the sun's atmosphere) become tangled up and then violently snap back into place. This sudden magnetic reconnection can release huge gouts of plasma and magnetic field known as coronal mass ejections (CMEs), which surf across space on the sun's ever-gusting #SolarWind.

"If a powerful #CME passes over Earth, it can compress the planet's #MagneticShield, causing what's known as a #GeomagneticStorm.

"Mild geomagnetic storms can damage #satellites and interrupt radio transmissions; severe storms, like the 'Halloween storms' of 2003, can cause widespread #PowerOutages across the world and permanently damage #ElectricalInfrastructure, such as power transformers. Some researchers fear that a sufficiently large solar storm could also ravage the world's undersea internet cables, resulting in an '#InternetApocalypse' that leaves huge chunks of the world population disconnected for months.

"CME outbursts typically peak every 11 years or so, when the sun enters the part of its natural activity cycle known as the solar maximum — the time when magnetic activity in the corona is in high gear.

"Today, satellites can monitor solar outbursts directly. But finding evidence of ancient storms requires some atomic detective work. The authors of the new study looked for evidence of special particles known as #CosmogenicRadionuclides — essentially, radioactive isotopes (versions of elements) created when charged solar particles collide with elements in Earth's atmosphere.

"These radioactive particles can appear in natural records, like tree rings and ice cores. In the study, the authors looked at the latter, analyzing several cores drilled in Antarctica and Greenland. Cores from both locations showed a remarkable spike in the radionuclides beryllium-10 and chlorine-36 around 9,200 years ago, indicating that a powerful solar storm swept across Earth at that time.

"Further analysis of the cores showed that the storm was particularly powerful — perhaps on a par with the most powerful solar storm ever detected, which occurred during a solar maximum between the years 775 B.C. and 774 B.C.

"The newly discovered storm's occurrence during a solar minimum, when magnetic activity on the sun should be low, left the study authors puzzled and alarmed.

"'This [storm] further pushes the magnitude of a potential worst-case scenario for [solar storm] events,' the researchers wrote in the study.

"According to the study authors, it is now essential for researchers to detect more ancient, extreme storms in the ice-core and tree-ring records, to determine if there is some sort of pattern beyond the sun's 11-year cycle that dictates when the most extreme storms will occur."

https://www.livescience.com/ancient-solar-storm-solar-minimum

#SolarFlares #SolarCycle25 #CarringtonEffect #LightsOut #KesslerSyndrome

Hackaday Links: September 1, 2019 - The sun may be spotless, but that doesn’t mean it isn’t doing interesting things. A geomagnetic st... more: https://hackaday.com/2019/09/01/hackaday-links-september-1-2019/ #vectornetworkanalyzer #geomagneticstorm #hackadaycolumns #hackadaylinks #hurricane #satellite #sunspots #amateur #aurora #emcomm #noaa15 #storm #ham #vna