{"id":16436,"date":"2025-02-18T05:54:27","date_gmt":"2025-02-18T00:24:27","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=16436"},"modified":"2025-04-04T09:22:51","modified_gmt":"2025-04-04T03:52:51","slug":"earthquake-swarm","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/earthquake-swarm\/","title":{"rendered":"Earthquake Swarm"},"content":{"rendered":"<h2>Earthquake Swarm Latest News<\/h2>\n<p>A state of emergency has been declared on Greece\u2019s Santorini and the nearby islands of Ios, Amorgos, and Anafi after a swarm of undersea earthquakes this month.<\/p>\n<h2>About Earthquake Swarm<\/h2>\n<ul>\n<li>It occurs when <strong>multiple seismic events<\/strong> of comparable intensity strike a small area <strong>in relatively quick succession.<\/strong><\/li>\n<li>It involves a series of many (sometimes thousands)<strong> low-intensity earthquakes<\/strong> without a discernible main shock that can occur over weeks in active geothermal areas.<\/li>\n<li>When <strong>seismic energy piles up inside the Earth<\/strong> and is released in small amounts from certain points, such a series of earthquakes can occur.<\/li>\n<\/ul>\n<h2>What Causes Swarm Sequences?<\/h2>\n<ul>\n<li><strong>Fluid movement<\/strong>\n<ul>\n<li>In volcanic environments, this can be fluid <strong>released from deeper magma or circulating within <\/strong>active geothermal areas (in volcanic areas such as the Taup\u014d Volcanic Zone).<\/li>\n<li>The earthquakes triggered by <strong>fluids occur as fault slip<\/strong> on the cracks and faults through which the water is moving.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Active volcanism<\/strong>\n<ul>\n<li>Magma movement can also act as the \u2018driving mechanism\u2019 for swarms, creating the earthquakes as magma-filled cracks push their way through the Earth\u2019s crust.<\/li>\n<li>In such a case the earthquakes <strong>commonly occur near the crack tip<\/strong> (ahead of the magma where the crack is starting to open), or off to the side of the crack.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Slow-slip events<\/strong>\n<ul>\n<li>A slow-slip event is <strong>essentially an earthquake in slow-motion<\/strong>, and typically involves centimetres to tens of centimetres of movement along a fault, over weeks to years.<\/li>\n<li>We commonly see slow slip events at the <strong>Hikurangi subduction zone<\/strong>, usually at least one or two per year.\u00a0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Earthquake Swarm FAQs<\/h2>\n<p><strong>Q1:<\/strong> What is the difference between earthquake aftershocks and swarms?<\/p>\n<p><strong>Ans:<\/strong> Aftershocks become less frequent with time, although they can continue for days, weeks, months, or even years for a very large mainshock. A swarm, on the other hand, is a sequence of mostly small earthquakes with no identifiable mainshock.<\/p>\n<p><strong>Q2:<\/strong> Where do most earthquakes occur?<\/p>\n<p><strong>Ans:<\/strong> It occurs along the rim of the Pacific Ocean<\/p>\n<p><strong>Q3:<\/strong> What is an earthquake?<\/p>\n<p><strong>Ans:<\/strong> An earthquake is a violent and abrupt shaking of the ground, caused by movement between tectonic plates along a fault line in the earth&#8217;s crust.<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/what-is-an-earthquake-swarm\/article69232651.ece\" target=\"_blank\" rel=\"nofollow noopener\">TH<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Earthquake Swarm occurs when multiple seismic events of comparable intensity strike a small area in relatively quick succession<\/p>\n","protected":false},"author":5,"featured_media":16437,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-16436","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/16436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=16436"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/16436\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/16437"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=16436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=16436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=16436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}