{"id":2951,"date":"2023-02-08T05:58:00","date_gmt":"2023-02-08T00:28:00","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=2951"},"modified":"2025-03-26T09:22:21","modified_gmt":"2025-03-26T03:52:21","slug":"what-is-the-moment-magnitude-scale","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/what-is-the-moment-magnitude-scale\/","title":{"rendered":"What is the Moment Magnitude Scale?"},"content":{"rendered":"<h2>\u00a0About Moment Magnitude Scale:<\/h2>\n<ul>\n<li>It is a <strong>logarithmic scale that measures the total amount of energy<\/strong> released by <strong>an earthquake.<\/strong><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li>It is the <strong>only scale capable of <\/strong>reliably <strong>measuring<\/strong> the magnitudes of the largest, <strong>most destructive earthquakes<\/strong> (that is, greater than magnitude 8).<\/li>\n<li>It was <strong>developed in the 1970s<\/strong> by Japanese seismologist <strong>Hiroo Kanamori<\/strong> and American seismologist <strong>Thomas C. Hanks.<\/strong><\/li>\n<li><strong>How is it calculated?<\/strong><\/li>\n<li>The moment magnitude scale is <strong>based on the total moment release of the earthquake.\u00a0<\/strong><\/li>\n<li><strong>Moment is a product of the distance a fault moved<\/strong> and the <strong>force required to move it.\u00a0<\/strong><\/li>\n<li><strong>It is derived from modeling recordings<\/strong> of the earthquake at multiple stations.\u00a0<\/li>\n<li><strong>Moment magnitude estimates are about the same as Richter magnitudes<\/strong> for small to large earthquakes. But only the moment magnitude scale is <strong>capable of measuring M8<\/strong> (read &#8220;magnitude 8&#8221;) and <strong>greater events accurately.<\/strong><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>What is the Richter scale?<\/h3>\n<ul>\n<li>It was <strong>invented in 1935 by Charles F. Richter<\/strong> as a mathematical device <strong>to compare the size of earthquakes.\u00a0<\/strong><\/li>\n<li>The Richter scale is <strong>used to rate the magnitude of an earthquake<\/strong>, that is, the <strong>amount of energy released during an earthquake.<\/strong><\/li>\n<li>The Richter scale is a <strong>base-10 logarithmic scale<\/strong>, meaning <strong>each order<\/strong> of magnitude is <strong>10 times more intensive than the last one.<\/strong>\u00a0<\/li>\n<li>It is <strong>most effective<\/strong> for regional earthquakes <strong>no greater than magnitude 5.<\/strong><\/li>\n<li><strong>How is it calculated?<\/strong><\/li>\n<li>The Richter scale involves measuring the <strong>amplitude (height) of the largest recorded wave at a specific distance from the seismic source.<\/strong><\/li>\n<li><strong>Adjustments are included for the variation in the distance<\/strong> between the various seismographs and the epicenter of the earthquakes.<\/li>\n<li>The Richter scale <strong>doesn&#8217;t measure quake damage.<\/strong><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3>Q1) What is a logarithmic scale?<\/h3>\n<p>A logarithmic scale is a nonlinear scale often used when analyzing a large range of quantities. Instead of increasing in equal increments, each interval is increased by a factor of the base of the logarithm. Typically, a base ten and base e scale are used.<\/p>\n<p><strong>Source:\u00a0 <\/strong><a href=\"https:\/\/science.thewire.in\/the-sciences\/turkey-syria-earthquakes-explained\/\" target=\"_blank\" rel=\"nofollow noopener\">Turkey-Syria Earthquakes: A Seismologist Explains What\u00a0Happened<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Moment Magnitude Scale is a logarithmic scale that measures the total amount of energy released by earthquake.<\/p>\n","protected":false},"author":5,"featured_media":2952,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-2951","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\/2951","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=2951"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/2951\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/2952"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=2951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=2951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=2951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}