{"id":31604,"date":"2018-04-13T08:06:34","date_gmt":"2018-04-13T12:06:34","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=31604"},"modified":"2018-04-13T08:06:34","modified_gmt":"2018-04-13T12:06:34","slug":"a-second-magnetic-field-discovered","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2018\/04\/a-second-magnetic-field-discovered\/","title":{"rendered":"A second magnetic field discovered"},"content":{"rendered":"

\"\"<\/a><\/p>\n

(Source: Southgate ARC<\/a>)<\/p>\n

\n

The ESA just discovered a second magnetic field surrounding our planet<\/h1>\n

A trio of satellites studying our planet’s magnetic field have shown details of the steady swell of a magnetic field produced by the ocean’s tides.<\/p>\n

Four years of data collected by the European Space Agency’s (ESA) Swarm mission have contributed to the mapping of this ‘other’ magnetic field, one that could help us build better models around global warming.<\/p>\n

Physicist Nils Olsen from the Technical University of Denmark presented the surprising results at this year’s European Geosciences Union meeting in Vienna, explaining how his team of researchers managed to detail such a faint signature.<\/p>\n

“It’s a really tiny magnetic field,” Olsen told BBC correspondent Jonathan Amos. “It’s about 2 \u2013 2.5 nanotesla at satellite altitude, which is about 20,000 times weaker than Earth’s global magnetic field.”<\/p>\n

On a fundamental level, both fields are the result of a dynamo effect produced by charged particles being sloshed around in a fluid.<\/p>\n

The stronger magnetic field that tugs on our compass needle forms from the steady movement of molten rock deep under our feet.<\/p>\n

This field also leaves its signature in the alignment of particles embedded in Earth’s crust, a pattern that has also been analysed in detail by Swarm<\/p>\n

Read the full story at:
\nhttps:\/\/www.sciencealert.com\/esa-swarm-satellite-map-ocean-tides-magnetic-field<\/a><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

(Source: Southgate ARC) The ESA just discovered a second magnetic field surrounding our planet A trio of satellites studying our planet’s magnetic field have shown details of the steady swell of a magnetic field produced by the ocean’s tides. Four years of data collected by the European Space Agency’s (ESA) Swarm mission have contributed to […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3,810],"tags":[580,811],"class_list":["post-31604","post","type-post","status-publish","format-standard","hentry","category-news","category-space-weather","tag-southgate-arc","tag-spaceweather"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-8dK","jetpack-related-posts":[{"id":31151,"url":"https:\/\/swling.com\/blog\/2018\/03\/vernal-equinox-cracks-in-earths-magnetic-field\/","url_meta":{"origin":31604,"position":0},"title":"Vernal equinox ‘cracks’ in Earth’s magnetic field","author":"Thomas","date":"March 12, 2018","format":false,"excerpt":"(Source: Southgate ARC) Equinox 'cracks' forming in Earth's magnetic field The vernal equinox is less than 10 days away. That means one thing: Cracks are opening in Earth's magnetic field. The seasonal phenomenon is known as the \"Russell-McPherron effect,\" named after the researchers who first explained it more than 40\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/GeomagneticStormAurora.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/GeomagneticStormAurora.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/GeomagneticStormAurora.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":35546,"url":"https:\/\/swling.com\/blog\/2019\/01\/building-a-raspberry-pi-magnetometer-network\/","url_meta":{"origin":31604,"position":1},"title":"Building a Raspberry Pi magnetometer network","author":"Thomas","date":"January 13, 2019","format":false,"excerpt":"(Source: Southgate ARC) Ciar\u00e1n Beggan\u00a0of the British Geological Survey describes how a network of 9 Raspberry Pi magnetometers were deployed to schools around the UK to measure geomagnetic storms As computers such as the Raspberry Pi and geophysical sensors have become smaller and cheaper it is now possible to build\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/01\/Screen-Shot-2019-01-13-at-6.09.05-AM.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":39808,"url":"https:\/\/swling.com\/blog\/2019\/09\/1921-ny-railroad-storm-could-have-surpassed-intensity-of-1859-carrington-event\/","url_meta":{"origin":31604,"position":2},"title":"1921 NY Railroad Storm could have surpassed intensity of 1859 Carrington Event","author":"Thomas","date":"September 25, 2019","format":false,"excerpt":"(Source: Southgate ARC via Eric McFadden) Scientific American magazine reports new data suggest the 1921 'New York Railroad Storm' could have surpassed the intensity of the famous Carrington Event of 1859 In a paper published in the journal Space Weather,\u00a0Jeffrey Love\u00a0of the U.S. Geological Survey and his colleagues reexamined the\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Sun-Solar-Flare-CME-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Sun-Solar-Flare-CME-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Sun-Solar-Flare-CME-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Sun-Solar-Flare-CME-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":30763,"url":"https:\/\/swling.com\/blog\/2018\/02\/solar-minimum-a-relative-large-sunspot-makes-appearance\/","url_meta":{"origin":31604,"position":3},"title":"Solar Minimum: A “relatively large” sunspot makes appearance","author":"Thomas","date":"February 6, 2018","format":false,"excerpt":"(Source: Southgate ARC) With Solar Minimum right around the corner, sunspot counts are at an almost 10-year low. So it came as a surprise yesterday when a relatively large sunspot emerged near the sun's eastern limb. AR2699\u00a0has a primary dark core larger than Earth with many smaller magnetic condensations trailing\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"Sunspots","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/02\/Sunspot.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":51327,"url":"https:\/\/swling.com\/blog\/2021\/12\/radio-waves-eiffel-tower-radio-100-years-ago-raspberry-pi-radio-time-machine-barrie-arc-thrives-in-pandemic-and-the-voice-of-ganymede-via-juno\/","url_meta":{"origin":31604,"position":4},"title":"Radio Waves: Eiffel Tower Radio 100 Years Ago, Raspberry Pi Radio Time Machine, Barrie ARC Thrives in Pandemic, and The Voice of Ganymede via JUNO","author":"Thomas","date":"December 26, 2021","format":false,"excerpt":"Radio Waves:\u00a0 Stories Making Waves in the World of Radio Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest\u00a0SWLing Post\u00a0readers.\u00a0 To that end:\u00a0Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/2021-12-23-Links-Eiffel-tower-radio.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/2021-12-23-Links-Eiffel-tower-radio.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/2021-12-23-Links-Eiffel-tower-radio.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/2021-12-23-Links-Eiffel-tower-radio.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/2021-12-23-Links-Eiffel-tower-radio.webp?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/2021-12-23-Links-Eiffel-tower-radio.webp?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":19942,"url":"https:\/\/swling.com\/blog\/2016\/07\/rfi-from-solar-power-installations\/","url_meta":{"origin":31604,"position":5},"title":"RFI from solar power installations","author":"Thomas","date":"July 4, 2016","format":false,"excerpt":"(Source: Southgate ARC) The Netherlands national amateur radio society VERON reports on the pollution problems caused by Solar Panels installed on homes Electrical systems such as solar panel installations must comply with EMC (Electro Magnetic Compatibility) standards. 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