{"id":20591,"date":"2026-01-02T08:36:42","date_gmt":"2026-01-02T07:36:42","guid":{"rendered":"https:\/\/reperes-astro.fr\/?p=20591"},"modified":"2026-01-07T18:49:45","modified_gmt":"2026-01-07T17:49:45","slug":"activite-solaire-suivi-par-les-membres-de-reperes","status":"publish","type":"post","link":"https:\/\/reperes-astro.fr\/activite-solaire-suivi-par-les-membres-de-reperes\/","title":{"rendered":"Activit\u00e9 solaire : suivi par les membres de REPERES"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>Derni\u00e8re nouvelle dans space weather (traduction google)<\/strong><\/h2>\n\n\n\n<p>Chaque jour en 2025 (si les nuages le permettent), Warren Spreng de Mason, Ohio, pointait son t\u00e9lescope filtr\u00e9 Seestar 50 vers le soleil et prenait une photo. \u00ab J\u2019ai ensuite superpos\u00e9 l\u2019image de chaque jour sur celle des jours pr\u00e9c\u00e9dents pour construire un composite du disque avec toutes les taches solaires de ce mois-l\u00e0 \u00bb, explique Spreng.<\/p>\n\n\n\n<p>Les archives de Spreng montrent en un coup d&rsquo;\u0153il que le cycle solaire 25 est loin d&rsquo;\u00eatre termin\u00e9. Chaque mois en 2025 apportait de nombreuses grandes taches solaires des deux c\u00f4t\u00e9s de l&rsquo;\u00e9quateur du soleil. Alors que 2026 commence, le nombre mensuel moyen de taches solaires reste confortablement sup\u00e9rieur \u00e0 100.<\/p>\n\n\n\n<p>Les <a href=\"https:\/\/www.swpc.noaa.gov\/products\/solar-cycle-progression\">pr\u00e9visions<\/a> du <a href=\"https:\/\/www.swpc.noaa.gov\/products\/solar-cycle-progression\">cycle solaire<\/a> de la NOAA sugg\u00e8rent que le nombre de taches solaires devrait rester \u00e0 peu pr\u00e8s aussi \u00e9lev\u00e9 pendant la majeure partie de l&rsquo;ann\u00e9e 2026 avec une lente baisse vers le minimum solaire en cours d&rsquo;ici la fin de l&rsquo;ann\u00e9e. D&rsquo;ici l\u00e0, la m\u00e9t\u00e9o spatiale continuera d&rsquo;\u00eatre prise d&rsquo;assaut.<\/p>\n\n\n\n<p>Voici le r\u00e9sultat. Cliquez sur l\u2019image pour une vue haute r\u00e9solution de chaque tache solaire en 2025 :<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/09\/sunspots2025_strip.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"520\" height=\"426\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/09\/sunspots2025_strip.jpg\" alt=\"\" class=\"wp-image-21994\" style=\"width:630px\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/09\/sunspots2025_strip.jpg 520w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/09\/sunspots2025_strip-300x246.jpg 300w\" sizes=\"auto, (max-width: 520px) 100vw, 520px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p><strong>La Terre est encore dans la zone de STRIKE :<\/strong> Une phalange de <a href=\"https:\/\/spaceweather.com\/images2025\/25aug25\/turning.gif\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0373b5\" class=\"has-inline-color\"><strong><span style=\"text-decoration: underline;\">grandes taches solaires<\/span><\/strong><\/mark><\/a> se tourne vers la Terre. Sunspot 4199 est cr\u00e9pitant avec de fortes \u00e9ruptions solaires <strong><a href=\"https:\/\/spaceweather.com\/glossary\/flareclasses.html\">de classe M<\/a><\/strong>, tandis que la grande tache solaire 4197 a un champ magn\u00e9tique de classe delta qui abrite l&rsquo;\u00e9nergie pour les <a href=\"https:\/\/svs.gsfc.nasa.gov\/10109\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0373b5\" class=\"has-inline-color\">spires X<\/mark><\/strong><\/a> encore plus fortes. La Terre est presque dans la zone de frappe de ces r\u00e9gions actives, et nous serons clairement dans \u00ab\u00a0l&rsquo;\u0153il du cyclone\u00a0\u00bb dans le courant de la semaine. Restez \u00e0 l&rsquo;\u00e9coute.<\/p>\n\n\n\n<p><strong>Alertes solaire:<\/strong> <a href=\"https:\/\/spaceweatheralerts.com\"><strong><span style=\"text-decoration: underline;\"><strong>SpaceWeather<\/strong><\/span>.com<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"has-text-align-right\">Source : <strong><a href=\"https:\/\/spaceweather.com\/archive.php?view=1&amp;day=26&amp;month=08&amp;year=2025\">SpaceWeather.com<\/a><\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-1024x1024.gif\" alt=\"Activit\u00e9 solaire\" class=\"wp-image-20592\" style=\"width:630px\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-1024x1024.gif 1024w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-300x300.gif 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-150x150.gif 150w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-768x768.gif 768w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-1536x1536.gif 1536w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-80x80.gif 80w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/Soleil-SW-26-aout-320x320.gif 320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">25\/08\/25 : SW Sunspot 4199 est cr\u00e9pitant avec de fortes \u00e9ruptions solaires <a href=\"https:\/\/spaceweather.com\/glossary\/flareclasses.html\"><strong>de classe M<\/strong><\/a>. Cr\u00e9dit : NASA\/ODD.<\/figcaption><\/figure>\n<\/div>\n\n\n<p>AXEL <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1001\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1.jpg\" alt=\"\" class=\"wp-image-20667\" style=\"width:630px\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1.jpg 1000w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1-300x300.jpg 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1-150x150.jpg 150w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1-768x769.jpg 768w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1-80x80.jpg 80w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-2-1-320x320.jpg 320w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">24\/08\/25 : Axel G. : longueur d&rsquo;onde du fer &#8211; Taka fs60cf avec Sol&rsquo;ex (scan unique).<\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-1-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1002\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-1-1-1024x1002.jpg\" alt=\"\" class=\"wp-image-20666\" style=\"width:630px\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-1-1-1024x1002.jpg 1024w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-1-1-300x293.jpg 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-1-1-768x751.jpg 768w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-1-1-1536x1502.jpg 1536w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-1-1.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">24\/08\/25 : Axel G. : Le groupe 4188 \u00e0 4190 avec le module Ca K Lunt bande passante 2,4 A sur longueur d\u2019onde 3933,66 A (25% de 1096 images).<\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-3.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"673\" height=\"639\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-3.jpg\" alt=\"Activit\u00e9 solaire\" class=\"wp-image-20605\" style=\"width:630px\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-3.jpg 673w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/08\/soleil-axel-3-300x285.jpg 300w\" sizes=\"auto, (max-width: 673px) 100vw, 673px\" \/><\/a><figcaption class=\"wp-element-caption\">03\/08\/25 : Axel G. : seeing pas top Lunt 50 h alpha Asi 178mm.<\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n<div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_20591\" class=\"pvc_stats all  \" data-element-id=\"20591\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p><div class=\"pvc_clear\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Derni\u00e8re nouvelle dans space weather (traduction google) Chaque jour en 2025 (si les nuages le permettent), Warren Spreng de Mason, Ohio,&#46;&#46;&#46;<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_20591\" class=\"pvc_stats all  \" data-element-id=\"20591\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 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class=\"pvc_clear\"><\/div>\n","protected":false},"author":2,"featured_media":20847,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,57,49],"tags":[],"class_list":["post-20591","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agenda","category-aurores-et-autres-evenements","category-informations-a-destination-des-enseignants-et-des-animateurs"],"a3_pvc":{"activated":true,"total_views":117,"today_views":0},"yoast_head":"<title>Activit\u00e9 solaire : suivi par les membres de REPERES - Rep\u00e8res Astro<\/title>\n<meta name=\"description\" content=\"Derni\u00e8re nouvelle de l&#039;activit\u00e9 solaire. 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