{"id":13244,"date":"2014-11-04T07:50:33","date_gmt":"2014-11-04T07:50:33","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=13244"},"modified":"2014-11-04T07:50:33","modified_gmt":"2014-11-04T07:50:33","slug":"mount-mannen-rockslide-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2014\/11\/04\/mount-mannen-rockslide-1\/","title":{"rendered":"Mount Mannen rockslide &#8211; still in an accelerated creep phase of movement"},"content":{"rendered":"<h5>The Mount Mannen rockslide<\/h5>\n<p>The <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2014\/10\/31\/the-mannen-rockslide-2\/\">Mount Mannen rockslide<\/a> in Norway is continuing to behave in an unpredictable manner, no doubt to the intense frustration of all involved.\u00a0 The <a href=\"http:\/\/www.tv2.no\/nyheter\/mannen-direkte#\">tv2 website<\/a> (in Norwegian, though <a href=\"https:\/\/translate.google.com\/translate?hl=en&amp;sl=no&amp;tl=en&amp;u=http%3A%2F%2Fwww.tv2.no%2Fnyheter%2Fmannen-direkte%23\">Google Translate does a good job<\/a>), which has the live webcam, has produced a series of graphs showing the movement of the landslide.\u00a0 This one, complete up to yesterday, shows the cumulative displacement of the landslide over the last month:<\/p>\n<div id=\"attachment_13245\" style=\"width: 564px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/11\/14_10-Mannen-6.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-13245\" class=\"wp-image-13245 size-full\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/11\/14_10-Mannen-6.jpg\" alt=\"Mount Mannen rockslide\" width=\"554\" height=\"492\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/11\/14_10-Mannen-6.jpg 554w, https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/11\/14_10-Mannen-6-300x266.jpg 300w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/a><p id=\"caption-attachment-13245\" class=\"wp-caption-text\">http:\/\/www.tv2.no\/nyheter\/mannen-direkte#<\/p><\/div>\n<p>.<\/p>\n<p>The lines show different parts of the monitored slope of the Mount Mannen rockslide.\u00a0 Points 1 and 2 in the upper part of the active slide, points 3 and 4 are in the lower section of the active block.\u00a0 So, it appears that the upper part of the landslide is still moving quickly (about 15 mm per day) and has now displaced about 24 cm in a month, whilst the lower part has moved about 10 cm.\u00a0 The difference between the two is not unusual or surprising for this type of landslide.\u00a0 The behaviour on about 30th October is interesting as the landslide appears to have slowed dramatically in the upper portion and actually stopped briefly lower down, before starting to move again.\u00a0 We see similar behaviour in lab tests that simulate creep movements, although we cannot fully explain these episodes.\u00a0 Whilst the movement record is quite noisy (which is unsurprising for an area that receives regular snowfall), the medium term trend is still an accelerated creep movement pattern, and my view would be that the slightly longer-term rate of creep is still increasing, with variations caused by changes in the environmental forcing (i.e. temperature and rainfall).<\/p>\n<p>In other words the authorities are correct to maintain the evacuation.\u00a0 I remain skeptical that much can be done to speed up this natural process.\u00a0 Although it is frustrating, nature probably needs to be allowed to take its course.<\/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 Mount Mannen rockslide in Norway continues to creep rapidly.  New monitoring data suggests that the slide is moving at about 15 mm per day now<!-- 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":13245,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[406,144,469,813,278,136],"class_list":["post-13244","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-creep","tag-europe","tag-featured","tag-landslide-monitoring","tag-norway","tag-rockslide"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/13244","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=13244"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/13244\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/13245"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=13244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=13244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=13244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}