{"id":8680,"date":"2023-04-18T12:52:31","date_gmt":"2023-04-18T07:22:31","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=8680"},"modified":"2025-03-29T04:27:44","modified_gmt":"2025-03-28T22:57:44","slug":"electromagnetic-ion-cyclotron-emic-waves","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/electromagnetic-ion-cyclotron-emic-waves\/","title":{"rendered":"Electromagnetic Ion Cyclotron (EMIC) Waves"},"content":{"rendered":"<h2><strong>About Electromagnetic Ion Cyclotron (EMIC) waves:<\/strong><\/h2>\n<ul>\n<li>These are the discreet electromagnetic emissions <strong>observed in the Earth&#8217;s magnetosphere<\/strong>.<\/li>\n<li>These waves are <strong>generated in the equatorial latitudes<\/strong> and propagate along magnetic field lines to their footprint in the high-latitude ionosphere.<\/li>\n<li>Their signatures can be recorded in <strong>both spaces as well as ground<\/strong>-based magnetometers.\u00a0<\/li>\n<li>These waves <strong>are higher during magnetically disturbed<\/strong> days (53.1%) as compared to quiet days (41.1%).<\/li>\n<li>The dependence of EMIC <strong>occurrence on solar flux<\/strong> is evident and they are more frequent during the descending phase of the solar cycle.<\/li>\n<li>The interesting observational feature is the <strong>peak occurrence of EMIC in the noon-dusk sector<\/strong>, which is attributed to the presence of plasma plumes at that time in the Earth&#8217;s magnetosphere.<\/li>\n<\/ul>\n<h3>What is Magnetosphere?<\/h3>\n<ul>\n<li>A magnetosphere is that <strong>area of space, around a planet<\/strong>, that is controlled by the planet&#8217;s magnetic field.<\/li>\n<li><strong>Earth has<\/strong> the <strong>strongest one<\/strong> of all the rocky planets.<\/li>\n<li>Earth&#8217;s magnetosphere is a vast, comet-shaped bubble, which has played a crucial role in <strong>our planet&#8217;s habitability.<\/strong><\/li>\n<li>The Earth&#8217;s magnetosphere is a highly dynamic structure that responds dramatically to solar variations.<\/li>\n<li>It is <strong>generated by<\/strong> the <strong>convective motion of charged, molten iron<\/strong>, far below the surface of <strong>Earth&#8217;s outer core.<\/strong><\/li>\n<li>The magnetosphere <strong>shields the earth from solar and cosmic particle radiation<\/strong>, as well as erosion of the atmosphere by the solar wind<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3>Q1) What is Radiation?<\/h3>\n<p>Radiation is the energy that is transmitted in the form of waves or particles through space or through a material medium. There are several different types of radiation, including electromagnetic radiation (such as radio waves, microwaves, infrared radiation,etc) and particle radiation (such as alpha particles, beta particles, and neutrons).<\/p>\n<p><strong>Source:\u00a0<\/strong><a href=\"https:\/\/dst.gov.in\/scientists-probe-characteristics-form-plasma-wave-identified-indian-antarctic-station-maitri\" target=\"_blank\" rel=\"nofollow noopener\"><u>Scientists probe characteristics of a form of plasma wave identified in the Indian Antarctic station, Maitri<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Electromagnetic Ion Cyclotron (EMIC) waves are discreet electromagnetic emissions in the Earth&#8217;s magnetosphere.<\/p>\n","protected":false},"author":5,"featured_media":8681,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-8680","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\/8680","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=8680"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/8680\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/8681"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=8680"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=8680"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=8680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}