{"id":3743,"date":"2011-10-07T13:47:15","date_gmt":"2011-10-07T13:47:15","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=3743"},"modified":"2011-10-09T05:56:18","modified_gmt":"2011-10-09T05:56:18","slug":"watch-this-surely-the-very-best-ever-cliff-collapse-video","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2011\/10\/07\/watch-this-surely-the-very-best-ever-cliff-collapse-video\/","title":{"rendered":"Watch this &#8211; surely the very best ever cliff collapse video"},"content":{"rendered":"<p><strong>Update:<\/strong><a href=\"https:\/\/blogs.agu.org\/landslideblog\/2011\/10\/09\/more-information-about-the-cornwall-cliff-collapse-video\/\"> more information is now available about this rockfall<\/a><\/p>\n<p>There have been some amazing rockfall videos in the past, but this one I think tops them all.\u00a0 This video was apparently recorded at Hells Mount, North cliffs near to\ufeff Portreath in Cornwall, SW England.\u00a0 It is genuinely astonishing:<\/p>\n<p><iframe loading=\"lazy\" title=\"North Cliffs Failure - Amazing Cliff Collapse caught on Camera!\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/ZVjr4mii3cE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><a href=\"http:\/\/www.cornwallcommunitynews.co.uk\/2011\/10\/07\/watch-a-rock-has-been\/\">There is a newspaper article about it here.<\/a><\/p>\n<p>A few things to note.\u00a0 First these cliffs are about 100 m high and are formed from Devonian slates,                greywakes and siltstones.\u00a0 Thus, they erode very slowly.\u00a0 Second watch, the video for the extraordinary precursory activity &#8211; prior to final collapse the whole rock mass is clearly deforming.\u00a0 So although this looks at first sight to be instantaneous, it is probably actually the final stage of a progressive process.\u00a0 Finally, note the weather and the state of the ground.\u00a0 It is sunny &#8211; certainly no sign of any rain, and the ground appears to be dry.\u00a0 The amount of dust that the landslide generates suggests that the lower levels are dry too.\u00a0 Indeed the video was posted on 3rd October, which was during the warmest spell of October weather on record in the UK&gt;\u00a0 The sea is calm.\u00a0 Thus, there is no obvious trigger &#8211; this apparently is a genuine progressive failure.<\/p>\n<p><strong>Update:<\/strong><a href=\"..\/2011\/10\/09\/more-information-about-the-cornwall-cliff-collapse-video\/\"> more information is now available about this rockfall<\/a><\/p>\n<p>Comments?<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/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>Surely the greatest ever rock cliff collapse video!<!-- 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":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[56,133,35],"class_list":["post-3743","post","type-post","status-publish","format-standard","hentry","category-landslide-video","tag-rockfall","tag-uk","tag-video"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/3743","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=3743"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/3743\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=3743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=3743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=3743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}