{"id":42036,"date":"2022-11-03T07:53:15","date_gmt":"2022-11-03T07:53:15","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=42036"},"modified":"2022-11-03T07:53:15","modified_gmt":"2022-11-03T07:53:15","slug":"pierreville-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2022\/11\/03\/pierreville-1\/","title":{"rendered":"Pierreville: an interesting landslide in Quebec, Canada"},"content":{"rendered":"<h4>Pierreville: an interesting landslide in Quebec, Canada<\/h4>\n<p>On 1 November 2022 at about 3:30 am local time an interesting landslide occurred at Pierreville in <a href=\"https:\/\/blogs.agu.org\/landslideblog\/?s=quebec&amp;submit.x=0&amp;submit.y=0&amp;mswhere=blog\">Quebec<\/a>, <a href=\"https:\/\/blogs.agu.org\/landslideblog\/?s=canada&amp;submit.x=0&amp;submit.y=0&amp;mswhere=blog\">Canada<\/a>.\u00a0 <a href=\"https:\/\/www.youtube.com\/watch?v=jTCUa0aICQM\">There is an excellent drone video of the aftermath of the landslide on Youtube<\/a>:-<\/p>\n<iframe loading=\"lazy\" title=\"Glissement Terrain \u00e0 Pierreville, le 1 novembre 2022\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/jTCUa0aICQM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<p>.<\/p>\n<p>I think the location is 46.079, -72.846, although this needs to be confirmed.\u00a0 This image is from the video:-<\/p>\n<div id=\"attachment_42039\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42039\" class=\" wp-image-42039\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-1.jpg\" alt=\"The 1 November 2022 landslide at Pierreville, Canada.  \" width=\"800\" height=\"416\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-1.jpg 1154w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-1-300x156.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-1-1024x532.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-1-768x399.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-42039\" class=\"wp-caption-text\"><em>The 1 November 2022 landslide at Pierreville, Canada. <a href=\"https:\/\/www.youtube.com\/watch?v=jTCUa0aICQM\">Still from a video posted to Youtube<\/a>.<\/em><\/p><\/div>\n<p>.<\/p>\n<p><a href=\"https:\/\/www.townoflaronge.ca\/photos-a-large-landslide-occurs-in-pierreville\/\">La Ronge Northerner has an article about the event<\/a> (with what I take to be a surprising typo, if you can find it!).\u00a0 No-one was killed by the landslide, and the images indicate that the houses have not been damaged so far.\u00a0 A van driving along the road crashed into the landslide, the driver survived but was treated for shock.<\/p>\n<p>The landslide is a slump\/spread, with some rotational component.\u00a0 This still from the video shows the rather complex form of the deposit:-<\/p>\n<div id=\"attachment_42041\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42041\" class=\" wp-image-42041\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-2.jpg\" alt=\"The aftermath of the  1 November 2022 landslide at Pierreville, Canada. \" width=\"800\" height=\"415\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-2.jpg 1273w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-2-300x156.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-2-1024x531.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-2-768x398.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-42041\" class=\"wp-caption-text\"><em>The aftermath of the 1 November 2022 landslide at Pierreville, Canada. Still from a video posted to Youtube.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>Note the materials involved in the landslide, which are clearly fine-grained.<\/p>\n<p>The timing of the failure is intriguing, as there had been no heavy rainfall and the river does not appear to be high or in flood.\u00a0\u00a0T<a href=\"https:\/\/www.google.com\/maps\/@46.07971,-72.846091,3a,75y,302.64h,63.52t\/data=!3m6!1e1!3m4!1sQXVrcSXanLH2Q90NKM3zIw!2e0!7i13312!8i6656\">here is Google Street View imagery of the site from 2014<\/a> which shows a fair amount of cracking and some repairs to the road in the area that failed:-<\/p>\n<div id=\"attachment_42043\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42043\" class=\" wp-image-42043\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-3.jpg\" alt=\"Google Street View imagery from 2014 showing the site of the 1 November 2022 landslide at Pierreville, Canada. \" width=\"800\" height=\"458\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-3.jpg 1585w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-3-300x172.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-3-1024x586.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-3-768x439.jpg 768w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/11\/22_11-Pierreville-3-1536x879.jpg 1536w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-42043\" class=\"wp-caption-text\"><em><a href=\"https:\/\/www.google.com\/maps\/@46.07971,-72.846091,3a,75y,302.64h,63.52t\/data=!3m6!1e1!3m4!1sQXVrcSXanLH2Q90NKM3zIw!2e0!7i13312!8i6656\">Google Street View imagery from 2014<\/a> showing the site of the 1 November 2022 landslide at Pierreville, Canada.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>This is not a smoking gun in isolation however &#8211; the cracking and repairs could have alternative explanations.<\/p>\n<p>Geotechnical testing will now be needed to determine whether the houses affected will be safe to occupy in the long term, and to plan the remediation of the site to reopen the road. A key priority will be to identify the likelihood of retrogression of the headscarp.<\/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>Pierreville: on 1 November 2022 an interesting landslide occurred on a riverbank in Quebec, Canada, destroying a road and threatening houses. <!-- 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":42039,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[4,469,959,725,524],"class_list":["post-42036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-canada","tag-featured","tag-landslide-report","tag-north-america","tag-riverbank"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/42036","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=42036"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/42036\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/42039"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=42036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=42036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=42036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}