{"id":25347,"date":"2017-08-30T06:35:35","date_gmt":"2017-08-30T06:35:35","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=25347"},"modified":"2017-08-30T07:03:11","modified_gmt":"2017-08-30T07:03:11","slug":"pizzo-cengalo-2","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2017\/08\/30\/pizzo-cengalo-2\/","title":{"rendered":"Before and after satellite images of the Pizzo Cengalo rock avalanche"},"content":{"rendered":"<h5>Before and after satellite images of the Pizzo Cengalo rock avalanche<\/h5>\n<p>The clean up in the aftermath of the <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2017\/08\/25\/pizzo-cengalo-rock-avalanche-1\/\">Pizzo Cengalo rock avalanche in Switzerland<\/a> continues amidst reports of continued small-scale but significant ongoing landslide activity.\u00a0 <a href=\"https:\/\/www.swissinfo.ch\/eng\/rebuilding-bondo-to-take-years-after-massive-landslide\/43478896\">Swissinfo reports<\/a> that the search for the eight missing hikers has now been abandoned, whilst the reconstruction phase may take up to three years.\u00a0 <a href=\"https:\/\/www.swissinfo.ch\/eng\/rebuilding-bondo-to-take-years-after-massive-landslide\/43478896\">The report<\/a> also includes this slightly intriguing sections:<\/p>\n<blockquote><p>The landslide is one of the largest to hit Switzerland in the last century. Piz Cengalo had been under observation since 2011, when another \u2013 albeit largely unnoticed \u2013 landslide caused 1.5 million cubic metres of the mountainside to collapse.<\/p><\/blockquote>\n<p>The implication is that the section of slope that had been causing concern remains intact, but I may be misinterpreting what is meant here.\u00a0 I wonder if any readers have further information?<\/p>\n<p>Meanwhile, the site of the landslide continues to be imaged by satellites, and cloud free images from before and after the event (in addition to the image during the collapse, <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2017\/08\/25\/pizzo-cengalo-rock-avalanche-1\/\">about which I previously posted<\/a>) are now available.\u00a0 This is a <a href=\"https:\/\/api.planet.com\/\">Planet Labs image<\/a> from 4th August 2017, showing the site of the landslide before the collapse:-<\/p>\n<div id=\"attachment_25361\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-25361\" class=\"size-full wp-image-25361\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/08\/17_08-Bondo-2-1-e1504075548212.jpg\" alt=\"\" width=\"640\" height=\"632\" \/><p id=\"caption-attachment-25361\" class=\"wp-caption-text\"><a href=\"https:\/\/api.planet.com\/\">Planet Labs image<\/a> of the site of the Pizzo Cengalo rock avalanche, dated 4th August 2017<\/p><\/div>\n<p>.<\/p>\n<p>And this image, dated 29th August 2017, shows the aftermath:-<\/p>\n<p>.<\/p>\n<div id=\"attachment_25366\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-25366\" class=\"size-full wp-image-25366\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/08\/17_08-Bondo-1a.jpg\" alt=\"Pizzo Cengalo rock avalanche\" width=\"640\" height=\"630\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/08\/17_08-Bondo-1a.jpg 640w, https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/08\/17_08-Bondo-1a-300x295.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><p id=\"caption-attachment-25366\" class=\"wp-caption-text\"><a href=\"https:\/\/api.planet.com\/\">Planet Labs image<\/a> of the aftermath of the Pizzo Cengalo rock avalanche, dated 29th August 2017<\/p><\/div>\n<p>.<\/p>\n<p>These two images nicely capture both the source of the landslide (i.e. the change is the scar area) and the new landslide deposit.\u00a0 Note that the volume of material that reached the village is quite small compared to the totral landslide volume, but there is now a huge amount of debris stored in the slopes above the settlement.\u00a0 This is the state of the village of Bondo itself:-<\/p>\n<div id=\"attachment_25372\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-25372\" class=\"size-full wp-image-25372\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/08\/17_08-Bondo-3-e1504076215121.jpg\" alt=\"Pizzo Cengalo rock avalanche\" width=\"640\" height=\"533\" \/><p id=\"caption-attachment-25372\" class=\"wp-caption-text\"><a href=\"https:\/\/api.planet.com\/\">Planet Labs image<\/a> dated 29th August 2017 showing the aftermath of the Pizzo Cengalo rock avalanche.<\/p><\/div>\n<p>.<\/p>\n<p>It is worth comparing that with this Google Earth image showing the same location in 2010, before the current landslide sequence began:-<\/p>\n<div id=\"attachment_25374\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-25374\" class=\"size-full wp-image-25374\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2017\/08\/17_08-Bondo-4-e1504076409209.jpg\" alt=\"Pizzo Cengalo rock avalanche\" width=\"640\" height=\"467\" \/><p id=\"caption-attachment-25374\" class=\"wp-caption-text\">Google Earth image from 2010 showing the location of the village of Bondo before the current landslide sequence.<\/p><\/div>\n<p>.<\/p>\n<h4>Acknowledgement<\/h4>\n<p>Planet Team (2017). Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA.\u00a0<a href=\"https:\/\/api.planet.com\/\">https:\/\/api.planet.com<\/a><\/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>Planet Labs satellite imagery is now available showing the aftermath of the Pizzo Cengalo rock avalanche in Switzerland, which killed eight people<!-- 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":25353,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[447,144,469,1205,306,8011],"class_list":["post-25347","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-alps","tag-europe","tag-featured","tag-planet-labs","tag-rock-avalanche","tag-swizerland"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/25347","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=25347"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/25347\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/25353"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=25347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=25347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=25347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}