{"id":43759,"date":"2023-05-31T05:55:01","date_gmt":"2023-05-31T05:55:01","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=43759"},"modified":"2023-05-31T17:13:06","modified_gmt":"2023-05-31T17:13:06","slug":"brienz-brinzauls","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2023\/05\/31\/brienz-brinzauls\/","title":{"rendered":"Accelerating movement at Brienz\/Brinzauls"},"content":{"rendered":"<h4>Accelerating movement at Brienz\/Brinzauls<\/h4>\n<p>The rate of movement of <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2023\/05\/10\/brienz-rockslide-1\/\">the large rockslope at Brienz\/Brinzauls in Switzerland<\/a> is continuing to accelerate, but it remains difficult to know exactly what will happen and when.\u00a0 <a href=\"https:\/\/www.youtube.com\/watch?v=3N80eDCnqaM\">There is now a Youtube live stream of the slope<\/a>, which should be visible below, via Blick TV | Municipality Albula\/Alvra:-<\/p>\n<iframe loading=\"lazy\" title=\"Brienz-Brinzauls: Live Cam Rutsch\/Rockslide (Mandatory Credit Blick TV)\" width=\"800\" height=\"600\" src=\"https:\/\/www.youtube.com\/embed\/3N80eDCnqaM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<p>.<\/p>\n<p>Regular rockfall activity is occurring on the slope &#8211; indeed yesterday there was a large detachment, <a href=\"https:\/\/www.nau.ch\/news\/schweiz\/brienz-gr-felsbrocken-donnert-ins-tal-polizei-erwischt-velofahrer-66506327\">which was caught on the webcam<\/a>.<\/p>\n<p><a href=\"http:\/\/www.albula-alvra.ch\/files\/BXMediaPlusDocument8589file.pdf\">Last week, local government released a briefing to the local residents about the landslide, which has been posted online<\/a>.\u00a0 It&#8217;s in German but Google Translate is helpful.\u00a0 Particularly interesting are graphs of the landslide movement history.\u00a0 First is a graph of the movement of the landslide back to 2019, with the <em>y-axis<\/em> scale being in centimetres per year:-<\/p>\n<div id=\"attachment_43762\" style=\"width: 742px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43762\" class=\"size-full wp-image-43762\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-3.jpg\" alt=\"Long term movement history of the Brienz\/Brinzauls landslide. \" width=\"732\" height=\"443\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-3.jpg 732w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-3-300x182.jpg 300w\" sizes=\"auto, (max-width: 732px) 100vw, 732px\" \/><p id=\"caption-attachment-43762\" class=\"wp-caption-text\"><em>Long term movement history of the Brienz\/Brinzauls landslide. Graph from a presentation by Gemeinde\/Cumegn Albura\/Alvra.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>The marked acceleration in the landslide that occurred during 2020 is clear, as is the recent acceleration of portions of the landslide.<\/p>\n<p>The presentation also includes ground-based radar data that captures the portion of the slope that is now mobile &#8211; in this case the colour scale is in mm per day:-<\/p>\n<div id=\"attachment_43764\" style=\"width: 734px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43764\" class=\"size-full wp-image-43764\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-4.jpg\" alt=\"Radar data showing the movement rate of the Brienz\/Brinzauls landslide. \" width=\"724\" height=\"494\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-4.jpg 724w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-4-300x205.jpg 300w\" sizes=\"auto, (max-width: 724px) 100vw, 724px\" \/><p id=\"caption-attachment-43764\" class=\"wp-caption-text\"><em>Radar data showing the movement rate of the Brienz\/Brinzauls landslide. Graph from a presentation by Gemeinde\/Cumegn Albura\/Alvra.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>As the image shows, it is not the whole of the landslide that is moving, but a portion in the centre of the slope that is termed &#8220;The Island&#8221; by the local geologists.\u00a0 The presentation includes recent data for the movement of this portion of the slope:-<\/p>\n<div id=\"attachment_43766\" style=\"width: 809px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43766\" class=\" wp-image-43766\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-5.jpg\" alt=\"Short term movement history of the Brienz\/Brinzauls landslide.\" width=\"799\" height=\"444\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-5.jpg 920w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-5-300x167.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/05\/23_05-Brienz-5-768x427.jpg 768w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><p id=\"caption-attachment-43766\" class=\"wp-caption-text\"><em>Short term movement history of the Brienz\/Brinzauls landslide. Graph from a presentation by Gemeinde\/Cumegn Albura\/Alvra.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>The monitoring team note that the acceleration of the slope over the previous two weeks had been linear, which makes extrapolation of likely future patterns quite difficult, with a range of scenarios being possible.\u00a0 One possibility is that the slope fails in a series of rockfalls, whilst another is a full failure of the mobile mass (which could even destabilise more of the slope).\u00a0 In the meantime, the area around the slope remains cordoned off, although <a href=\"https:\/\/www.suedostschweiz.ch\/ereignisse\/brienzbrinzauls-polizei-erwischt-fuenf-velofahrer-auf-gesperrten-wegen-bei-brienz\">there are reports of people trying to access the cycling routes<\/a>.<\/p>\n<p>The best case scenario at Brienz\/Brinzauls is that the slope fails in a series of smaller events in the coming days, removing the weak mass from the slope without destroying the village. At this point it is difficult to forecast how likely this is to play out.\u00a0 We watch with great interest.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>The rockslope at Brienz\/Brinzauls in Switzerland is accelerating, although forecasting future behaviour remains difficult. <!-- AddThis Advanced Settings generic via filter on wp_trim_excerpt --><!-- AddThis Share Buttons generic via filter on wp_trim_excerpt --><\/p>\n","protected":false},"author":22,"featured_media":43764,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[144,469,959,39,1408,444],"class_list":["post-43759","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-europe","tag-featured","tag-landslide-report","tag-monitoring","tag-rockslope","tag-switzerland"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/43759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/comments?post=43759"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/43759\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/43764"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=43759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=43759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=43759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}