{"id":46156,"date":"2025-05-03T11:35:00","date_gmt":"2025-05-03T06:05:00","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=46156"},"modified":"2025-05-17T11:42:27","modified_gmt":"2025-05-17T06:12:27","slug":"the-arabian-desert-and-green-arabia-hypothesis","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/the-arabian-desert-and-green-arabia-hypothesis\/","title":{"rendered":"The Arabian Desert and Green Arabia Hypothesis"},"content":{"rendered":"<h2>The Arabian Desert and Green Arabia Hypothesis Latest News<\/h2>\n<p>A recent study published in Nature presents evidence of recurring humid periods in the Arabian Desert, currently the largest expanse of dunes on Earth.<\/p>\n<h2>Geography of the Arabian Desert<\/h2>\n<ul>\n<li>Spans around\u00a0<strong>900,000 square miles<\/strong>, making it the\u00a0<strong>second-largest desert in the world<\/strong>\u00a0(after the Sahara).<\/li>\n<li>Located across\u00a0<strong>Saudi Arabia, UAE, Yemen, and Oman<\/strong>, and stretches into\u00a0<strong>Iraq, Jordan, Qatar, and Kuwait<\/strong>.<\/li>\n<li>Composed of\u00a0<strong>three main deserts<\/strong>:\n<ul>\n<li><strong>Rub\u2019al-Khali (Empty Quarter)<\/strong>\u00a0\u2013 the largest dune desert.<\/li>\n<li><strong>Ad-Dhana Desert<\/strong>\u00a0\u2013 central corridor.<\/li>\n<li><strong>An-Nafud Desert<\/strong>\u00a0\u2013 northern zone.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Climatic Features<\/h3>\n<ul>\n<li>The region is\u00a0<strong>hyper-arid<\/strong>, with\u00a0<strong>less than 33 mm of annual rainfall<\/strong>.<\/li>\n<li><strong>Extreme temperature variations<\/strong>: above\u00a0<strong>50\u00b0C during the day<\/strong>, dropping sharply at night.<\/li>\n<li>Frequent\u00a0<strong>sandstorms<\/strong>, including seasonal\u00a0<strong>Shamals<\/strong>\u00a0and whirlwinds called\u00a0<strong>Dust Devils<\/strong>, reduce visibility and affect human movement.<\/li>\n<\/ul>\n<h3>\u00a0Flora and Fauna<\/h3>\n<ul>\n<li><strong>Plant life<\/strong>\u00a0is scarce but includes\u00a0<strong>Date palms<\/strong>,\u00a0<strong>adenium (desert rose)<\/strong>,\u00a0<strong>acacia<\/strong>,\u00a0<strong>ghaf trees<\/strong>,\u00a0<strong>salt-bush<\/strong>, and\u00a0<strong>juniper<\/strong>.<\/li>\n<li><strong>Animal species<\/strong>:\n<ul>\n<li>Large mammals like the\u00a0<strong>Arabian oryx<\/strong>,\u00a0<strong>camels<\/strong>, and\u00a0<strong>gazelles<\/strong>.<\/li>\n<li>Predators like\u00a0<strong>striped hyenas<\/strong>,\u00a0<strong>Arabian wolves<\/strong>, and\u00a0<strong>caracals<\/strong>\u00a0(now rare).<\/li>\n<li>Reptiles like\u00a0<strong>dhub lizards<\/strong>,\u00a0<strong>horned vipers<\/strong>, and\u00a0<strong>cobras<\/strong>.<\/li>\n<li>Birds like\u00a0<strong>falcons<\/strong>,\u00a0<strong>vultures<\/strong>, and\u00a0<strong>doves<\/strong>.<\/li>\n<li>Insects including\u00a0<strong>scarab beetles<\/strong>,\u00a0<strong>ants<\/strong>, and\u00a0<strong>wasps<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Green Arabia Key Discoveries<\/h2>\n<ul>\n<li><strong>Speleothems (Stalagmites &amp; Stalactites)<\/strong>: Found deep within caves in the\u00a0<strong>Arabian Peninsula<\/strong>, these mineral deposits form only with\u00a0<strong>consistent rainfall<\/strong>,\u00a0<strong>vegetation<\/strong>, and\u00a0<strong>soil<\/strong>.\n<ul>\n<li>Their existence points to\u00a0<strong>multiple \u201cgreen phases\u201d<\/strong>\u00a0in the region over the\u00a0<strong>last 8 million years<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Uranium dating<\/strong>: Used to accurately determine the\u00a0<strong>age of speleothem formations<\/strong>, providing one of the\u00a0<strong>oldest continuous climate records<\/strong>\u00a0for Arabia.<\/li>\n<li><strong>Oxygen isotope analysis<\/strong>: Helped estimate\u00a0<strong>past rainfall levels<\/strong>\u00a0and\u00a0<strong>periods of humidity<\/strong>, confirming that\u00a0<strong>Arabia was not always a desert<\/strong>.<\/li>\n<li><strong>Archaeological evidence:\u00a0<\/strong>In the\u00a0<strong>Baynunah Formation (UAE)<\/strong>, fossils dating back\u00a0<strong>7 million years<\/strong>\u00a0show the presence of:\u00a0<strong>Hippos, Elephants, Giraffes &amp; Primates.<\/strong>\n<ul>\n<li>These fossils indicate that\u00a0<strong>Green Arabia served as a migratory route<\/strong>\u00a0for animals and hominids.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Source: <span style=\"color: #0000ff;\"><b>SCN<\/b><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Arabian Desert spans around 900,000 square miles, making it the second-largest desert in the world (after the Sahara).<\/p>\n","protected":false},"author":11,"featured_media":46161,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[274,273,21,23],"class_list":{"0":"post-46156","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-arabian-desert","9":"tag-green-arabia-hypothesis","10":"tag-prelims-pointers","11":"tag-upsc-prelims-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/46156","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=46156"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/46156\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/46161"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=46156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=46156"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=46156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}