{"id":23974,"date":"2021-10-20T09:37:40","date_gmt":"2021-10-20T09:37:40","guid":{"rendered":"https:\/\/lesvolcansnews.net\/2021\/10\/20\/nord-kivu-le-niveau-dalerte-du-volcan-nyiragongo-reste-le-jaune-ovg\/"},"modified":"2021-10-20T09:37:40","modified_gmt":"2021-10-20T09:37:40","slug":"nord-kivu-le-niveau-dalerte-du-volcan-nyiragongo-reste-le-jaune-ovg","status":"publish","type":"post","link":"https:\/\/lesvolcansnews.net\/?p=23974","title":{"rendered":"Nord-Kivu : Le niveau d\u2019alerte du volcan Nyiragongo reste le jaune (OVG)"},"content":{"rendered":"\n

<\/p>\n\n\n\n

Environs 5 mois apr\u00e8s l’\u00e9ruption volcanique du 22 Mai dernier, le niveau d’alerte du Volcan Nyiragongo mais aussi celui de Nyamulagira voisin reste dans la phase “jaune” ce qui signifie qu’il est sous vigilance des services comp\u00e9tents.<\/em><\/strong><\/p>\n\n\n\n

C’est l’essentiel du bulletin hebdomadaire de l’observatoire Volcanologique de Goma publi\u00e9 ce lundi 18 octobre et dont les volcans news.net s’est procur\u00e9 copie ce mardi 19 octobre soit un jour apr\u00e8s.<\/p>\n\n\n\n

Selon ce bulletin, les donn\u00e9es instrumentales acquises pendant la p\u00e9riode allant du 11 au 17 octobre 2021 rel\u00e8vent que sur la S\u00e9ismologie, les s\u00e9ismes \u00e0 longue p\u00e9riode ont \u00e9t\u00e9 enregistr\u00e9s dans le crat\u00e8re central du volcan Nyiragongo et autour du crat\u00e8re dans la direction Nord-Est. Dans l\u2019aire du volcan Nyamulagira, le nombre de s\u00e9ismes \u00e9tait faible, mais non n\u00e9gligeable. En date du 16 octobre 2021, \u00e0 02h23\u201927 \u00bb (temps local), un s\u00e9isme tectonique de magnitude 5.2 a \u00e9t\u00e9
enregistr\u00e9 et ressenti au grand Nord, au point de coordonner 0.33\u2019s et 29.82\u2019E. Des tremblements de terre ont encore secou\u00e9 le lac Kivu. Ils n\u2019\u00e9taient n\u00e9anmoins pas ressentis.<\/p>\n\n\n\n

Les m\u00eames donn\u00e9es indiquent que sur le point de la G\u00e9othermie et des fractures, les temp\u00e9ratures dans les fractures actives au Sud du volcan Nyiragongo ont demeur\u00e9 stables, mais manifestaient une l\u00e9g\u00e8re tendance \u00e0 la hausse dans la majorit\u00e9 de sites. Les extensions de ces fractures se sont dilat\u00e9es, bien que cette dilatation \u00e9tait faible. Cette dilatation \u00e9tait croissante du Sud de la ville vers le Nord.<\/p>\n\n\n\n

S\u2019agissant de la G\u00e9ochimie, l\u2019OVG indique que les mesures de la concentration du dioxyde de carbone effectu\u00e9es dans les sites habituels ont montr\u00e9 des variations moins significatives. Seuls les sites de Bugarura 3 et Munigi 1 ont connu une grande augmentation en dioxyde de carbone.<\/p>\n\n\n\n

Pour la situation du dioxyde de soufre, ce gaz continue d\u2019\u00eatre enregistr\u00e9 dans le panache volcanique. Sa pr\u00e9sence
continue \u00e0 prouver l\u2019augmentation progressive du lac de lave.<\/p>\n\n\n\n

Pour ce qui est de la Technique, le bulletin renseigne qu\u2019une station GPS a \u00e9t\u00e9 r\u00e9install\u00e9e \u00e0 l\u2019OVG. Hormis cela, tous les r\u00e9seaux des stations sismographes, DOAS, GPS, M\u00e9t\u00e9o et mesures des temp\u00e9ratures fonctionnent normalement.<\/p>\n\n\n\n

Tout en Pr\u00e9cisant que les donn\u00e9es instrumentales acquises durant la p\u00e9riode susmentionn\u00e9e indiquent que les deux (2) volcans sont toujours en activit\u00e9, l\u2019Observatoire Volcanologique de Goma (OVG) informe les populations de cette ville du Nord-Kivu, Gisenyi et de partout ailleurs que la variation \u00e9lev\u00e9e en concentration du dioxyde de carbone \u00e0 Munigi fait penser \u00e0 une anomalie qui exige un suivi particulier.<\/p>\n\n\n\n

Victoire Muliwavyo<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Environs 5 mois apr\u00e8s l’\u00e9ruption volcanique du 22 Mai dernier, le niveau d’alerte du Volcan Nyiragongo mais aussi celui de Nyamulagira voisin reste dans la phase “jaune” ce qui signifie<\/p>\n","protected":false},"author":14,"featured_media":23973,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-23974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-societe"],"yoast_head":"\nNord-Kivu : Le niveau d\u2019alerte du volcan Nyiragongo reste le jaune (OVG) - LES VOLCANS NEWS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lesvolcansnews.net\/?p=23974\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nord-Kivu : Le niveau d\u2019alerte du volcan Nyiragongo reste le jaune (OVG) - 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