{"id":44823,"date":"2025-06-05T21:25:26","date_gmt":"2025-06-05T15:55:26","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=44823"},"modified":"2025-06-05T21:25:47","modified_gmt":"2025-06-05T15:55:47","slug":"eruption-mount-etna-sicily","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/05-06-2025\/eruption-mount-etna-sicily","title":{"rendered":"Eruption of Mount Etna in Sicily"},"content":{"rendered":"\n<p><strong>Syllabus: GS1\/ Geography<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The recent eruption of <a href=\"https:\/\/www.nextias.com\/ca\/current-affairs\/16-11-2023\/daily-current-affairs-16-11-2023\">Mount Etna in Sicily<\/a>, Italy highlights the dynamic processes beneath the Earth\u2019s crust.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is Volcanic Eruption?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A volcanic eruption<\/strong> is the <strong>expulsion of gases, rock fragments, and\/or molten lava <\/strong>from within the Earth through a vent onto the Earth\u2019s surface or into the atmosphere.<\/li>\n\n\n\n<li><strong>Formation of Magma:<\/strong> Deep beneath the earth\u2019s surface, temperature and pressure are high enough to melt parts of the mantle and crust to form molten rock called magma.\n<ul class=\"wp-block-list\">\n<li>Magma is less dense than surrounding solid rock, so it <strong>rises<\/strong> through the crust, collecting in underground chambers.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Role of Gases and Pressure: <\/strong>Magma contains volatile compounds like<strong> water vapor, carbon dioxide, and sulfur dioxide.<\/strong>\n<ul class=\"wp-block-list\">\n<li>Deep underground, these gases are dissolved due to immense pressure.<\/li>\n\n\n\n<li>As magma ascends and pressure reduces near the surface, the gases form bubbles, increasing internal pressure.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Eruption Mechanism:<\/strong>\n<ul class=\"wp-block-list\">\n<li>At <strong>tectonic boundaries<\/strong> or hotspots (mantle plumes), cracks and faults allow magma to push upward. If gas pressure builds up significantly, it erupts violently, releasing lava, ash, and gases.<\/li>\n\n\n\n<li>If magma is suddenly obstructed, the resulting pressure may also cause <strong>earthquakes or generate seismic waves.<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Types of Volcanoes<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Stratovolcanoes (Composite):<\/strong> Tall, steep, explosive (e.g., Mount Etna, Mount Fuji).<\/li>\n\n\n\n<li><strong>Shield Volcanoes:<\/strong> Broad, gentle slopes, fluid lava flows (e.g., Mauna Loa in Hawaii).<\/li>\n\n\n\n<li><strong>Cinder Cone Volcanoes: <\/strong>Small, steep, single-eruption (e.g., Capulin Volcano).<\/li>\n\n\n\n<li><strong>Calderas:<\/strong> Large depressions formed by major eruptions (e.g., Yellowstone).<\/li>\n\n\n\n<li><strong>Volcanic Domes (Lava Domes):<\/strong> Small, rounded, steep-sided structures formed by slow extrusion of viscous lava (e.g., Novarupta Dome in Alaska).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Classification Based on Activity<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Active volcanoes:<\/strong> These volcanoes have erupted within the last 10,000 years or are currently erupting.<\/li>\n\n\n\n<li><strong>Dormant volcanoes: <\/strong>These volcanoes have not erupted in a long time (typically since the last ice age, about 12,000 years ago) but are still considered capable of erupting again.<\/li>\n\n\n\n<li><strong>Extinct volcanoes:<\/strong> These volcanoes are not expected to erupt again. They may have erupted in the past, but their magma supply has been depleted, and the volcano is no longer considered active.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img data-dominant-color=\"b6bab8\" data-has-transparency=\"false\" loading=\"lazy\" decoding=\"async\" width=\"762\" height=\"1024\" src=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/06\/Classification-Based-on-Activity-762x1024.png\" alt=\"\" class=\"not-transparent wp-image-44824\" style=\"--dominant-color: #b6bab8; width:506px;height:auto\" srcset=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/06\/Classification-Based-on-Activity-762x1024.png 762w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/06\/Classification-Based-on-Activity-223x300.png 223w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/06\/Classification-Based-on-Activity-768x1032.png 768w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/06\/Classification-Based-on-Activity.png 1054w\" sizes=\"auto, (max-width: 762px) 100vw, 762px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Impacts of Volcanic Eruptions<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Positive Impacts:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Fertile soils from volcanic ash.<\/li>\n\n\n\n<li>Geothermal energy resources.<\/li>\n\n\n\n<li>Creation of landforms and islands.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Negative Impacts:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Destruction of life and property.<\/li>\n\n\n\n<li>Climate change (e.g., <strong>sulfur aerosols<\/strong> temporarily cool the climate but disrupt global weather patterns).<\/li>\n\n\n\n<li>Disruption of air travel and infrastructure.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.thehindu.com\/news\/international\/mount-etna-erupts-all-about-europes-most-active-volcano\/article69651897.ece\" rel=\"nofollow noopener\" target=\"_blank\"><strong>TH<\/strong><\/a><strong>, <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/why-do-volcanoes-erupt\/article69651389.ece\" rel=\"nofollow noopener\" target=\"_blank\"><strong>TH<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<h3><strong>Context<\/strong><\/h3>\n<li class=\"ms-5\">The recent eruption of Mount Etna in Sicily, Italy highlights the dynamic processes beneath the Earth\u2019s crust.<\/li>\n<p><\/p>\n<h3><strong>Types of Volcanoes<\/strong><\/h3>\n<li class=\"ms-5\">Stratovolcanoes (Composite): Tall, steep, explosive (e.g., Mount Etna, Mount Fuji).<\/li>\n<li class=\"ms-5\">Shield Volcanoes: Broad, gentle slopes, fluid lava flows (e.g., Mauna Loa in Hawaii).<\/li>\n<li class=\"ms-5\">Cinder Cone Volcanoes: Small, steep, single-eruption (e.g., Capulin Volcano).<\/li>\n<li class=\"ms-5\">Volcanic Domes (Lava Domes): Small, rounded, steep-sided structures formed by slow extrusion of viscous lava (e.g., Novarupta Dome in Alaska).<\/li>\n<p><a href=\"https:\/\/www.nextias.com\/ca\/current-affairs\/05-06-2025\/eruption-mount-etna-sicily\" class=\"btn btn-primary btn-sm float-end\">Read\u00a0More<\/a><\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-44823","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/44823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=44823"}],"version-history":[{"count":3,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/44823\/revisions"}],"predecessor-version":[{"id":44847,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/44823\/revisions\/44847"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=44823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=44823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=44823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}