{"id":23786,"date":"2021-02-04T11:29:27","date_gmt":"2021-02-04T16:29:27","guid":{"rendered":"https:\/\/www.rc.fas.harvard.edu\/?p=23786"},"modified":"2021-02-04T11:29:27","modified_gmt":"2021-02-04T16:29:27","slug":"polar-hexagon-on-saturn","status":"publish","type":"post","link":"https:\/\/www.rc.fas.harvard.edu\/news\/polar-hexagon-on-saturn\/","title":{"rendered":"Deep rotating convection generates the polar hexagon on Saturn"},"content":{"rendered":"<div><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"23787\" data-permalink=\"https:\/\/www.rc.fas.harvard.edu\/news\/polar-hexagon-on-saturn\/attachment\/saturn_hexagon\/\" data-orig-file=\"https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturn_hexagon.jpg\" data-orig-size=\"1200,450\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"saturn_hexagon\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturn_hexagon-1024x384.jpg\" class=\"aligncenter size-large wp-image-23787\" src=\"https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturn_hexagon-1024x384.jpg\" alt=\"\" width=\"970\" height=\"364\" srcset=\"https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturn_hexagon-1024x384.jpg 1024w, https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturn_hexagon-300x113.jpg 300w, https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturn_hexagon-768x288.jpg 768w, https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturn_hexagon.jpg 1200w\" sizes=\"auto, (max-width: 970px) 100vw, 970px\" \/><\/div>\n<div class=\"highwire-cite-authors\"><strong><span class=\"highwire-citation-authors\"><span class=\"highwire-citation-author first hw-author-orcid-logo-wrapper has-tooltip hasTooltip author-popup-hover\" data-delta=\"0\" data-hasqtip=\"0\" aria-describedby=\"qtip-0\">Rakesh K. Yadav<\/span> <span class=\"highwire-citation-author hw-author-orcid-logo-wrapper has-tooltip hasTooltip\" data-delta=\"1\" data-hasqtip=\"1\" aria-describedby=\"qtip-1\">Jeremy Bloxham<\/span><\/span><\/strong><\/div>\n<div class=\"highwire-cite-metadata\"><em><span class=\"highwire-cite-metadata-journal highwire-cite-metadata\">PNAS\u00a0<\/span><span class=\"highwire-cite-metadata-date highwire-cite-metadata\">June 23, 2020 117<\/span><\/em><\/div>\n<p style=\"padding-left: 40px;\">\"The hexagonal flow pattern on Saturn is a striking example of turbulent self-organization. However, the mechanism of its formation and its depth remain unclear. There are two hypotheses: in one, the hexagon is shallow, extending to depths ranging from tens to hundreds of kilometers; in the other, it extends to thousands of kilometers. Here, we argue that the hexagon is likely very deep. Our model simultaneously and self-consistently produces alternating zonal jets, the polar cyclone, and hexagon-like polygonal structures similar to those observed on Saturn. These results show that compressible convection in rotating spherical shells is sufficient to produce Saturn-like polygonal zonal jets.\"<\/p>\n<p><a href=\"https:\/\/www.pnas.org\/content\/117\/25\/13991\">Read the paper at PNAS<\/a><\/p>\n<p><a href=\"https:\/\/arstechnica.com\/science\/2020\/06\/what-causes-saturns-strange-polar-cloud-hexagon\/\">Read the news article on Ars Technica<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"lead\">Rakesh K. Yadav Jeremy Bloxham PNAS\u00a0June 23, 2020 117 \"The hexagonal flow pattern on Saturn is a striking example of turbulent self-organization. However, the mechanism of its formation and its depth remain unclear. There are two hypotheses: in one, the hexagon is shallow, extending to depths ranging from tens to hundreds of kilometers; in the other, it extends to thousands&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"btn btn-primary\" href=\"https:\/\/www.rc.fas.harvard.edu\/news\/polar-hexagon-on-saturn\/\">Read more<\/a><\/p>\n","protected":false},"author":111,"featured_media":23788,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[38],"tags":[],"class_list":["post-23786","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p42YvN-6bE","jetpack_featured_media_url":"https:\/\/www.rc.fas.harvard.edu\/wp-content\/uploads\/2021\/02\/saturnhex.jpg","_links":{"self":[{"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/posts\/23786","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/users\/111"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/comments?post=23786"}],"version-history":[{"count":4,"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/posts\/23786\/revisions"}],"predecessor-version":[{"id":23792,"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/posts\/23786\/revisions\/23792"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/media\/23788"}],"wp:attachment":[{"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/media?parent=23786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/categories?post=23786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rc.fas.harvard.edu\/wp-json\/wp\/v2\/tags?post=23786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}