{"id":40174,"date":"2022-02-09T08:28:29","date_gmt":"2022-02-09T08:28:29","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=40174"},"modified":"2022-02-09T08:28:29","modified_gmt":"2022-02-09T08:28:29","slug":"dosquebradas-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2022\/02\/09\/dosquebradas-1\/","title":{"rendered":"Dosquebradas: at least 14 killed in a landslide in Colombia"},"content":{"rendered":"<h4>Dosquebradas: at least 16 killed in a landslide in Colombia<\/h4>\n<p>Heavy rainfall triggered a large landslide in the town of Dosquebradas in <a href=\"https:\/\/blogs.agu.org\/landslideblog\/?s=colombia&amp;submit.x=0&amp;submit.y=0&amp;mswhere=blog\">Colombia<\/a> yesterday, killing at least 16 people, injuring 34 more.\u00a0 The landslide, which occurred at 6:25 am local time, buried six houses.\u00a0 <a href=\"https:\/\/www.eltiempo.com\/colombia\/otras-ciudades\/derrumbe-en-pereira-que-hay-detras-de-la-tragedia-invernal-650373\">El Tiempo has a good report<\/a> (in Spanish &#8211; Google translate does a good job).<\/p>\n<p>The newspaper <a href=\"https:\/\/www.elespectador.com\/colombia\/mas-regiones\/una-tragedia-que-pudo-evitarse-en-dosquebradas\/\">El Spectador<\/a> has a good image of the site, which consists of a shallow failure in a steep scarp:-<\/p>\n<div id=\"attachment_40177\" style=\"width: 535px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-40177\" class=\"size-full wp-image-40177\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/02\/21_02-Dosquebradas-1.jpg\" alt=\"The 8 February 2022 landslide at Dosquebradas in Colombia, which killed 16 people. \" width=\"525\" height=\"350\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/02\/21_02-Dosquebradas-1.jpg 525w, https:\/\/blogs.agu.org\/landslideblog\/files\/2022\/02\/21_02-Dosquebradas-1-300x200.jpg 300w\" sizes=\"auto, (max-width: 525px) 100vw, 525px\" \/><p id=\"caption-attachment-40177\" class=\"wp-caption-text\">The 8 February 2022 landslide at Dosquebradas in Colombia, which killed 16 people. <a href=\"https:\/\/www.elespectador.com\/colombia\/mas-regiones\/una-tragedia-que-pudo-evitarse-en-dosquebradas\/\">Image by Santiago Ramirez via El Spectador.<\/a><\/p><\/div>\n<p>.<\/p>\n<p>Note the location of a high density, informal settlement at the foot of the slope.\u00a0 <a href=\"https:\/\/twitter.com\/HelbertSchneid1\/status\/1491238638906408962\">The same area was impacted by another landslide on 5 October 1976, in which 63 people were killed and a further four were left missing<\/a>.<\/p>\n<p>Colombia has an excellent, very active landslide research and mitigation community, so some excellent information about this failure has been posted to Twitter.\u00a0 <a href=\"https:\/\/twitter.com\/HelbertSchneid1\">Helbert Schneider<\/a>, a PhD student at Syracuse University, has tweeted two really interesting insights.\u00a0 <a href=\"https:\/\/twitter.com\/HelbertSchneid1\/status\/1491146655252742145\">The first provides drone footage of the site:<\/a>&#8211;<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">At least 14 people died and 30 more went injured due to a soil slide in central Colombia. <\/p>\n<p>A drone footage is available and shows the outcome of this tragedy&#8230;<a href=\"https:\/\/twitter.com\/davepetley?ref_src=twsrc%5Etfw\">@davepetley<\/a> <a href=\"https:\/\/t.co\/h5YGyVS5AI\">https:\/\/t.co\/h5YGyVS5AI<\/a><\/p>\n<p>&mdash; Helbert Garc\u00eda-Delgado (@HelbertSchneid1) <a href=\"https:\/\/twitter.com\/HelbertSchneid1\/status\/1491146655252742145?ref_src=twsrc%5Etfw\">February 8, 2022<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>.<\/p>\n<p>Whilst the second provides an overview of the landslide risk at the site:<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">I&#39;ve done some observations about the Pereira-Dosquebradas tragedy. First, using the footage available I tentatively located the fatal landslide. The base map corresponds to the landslide\/flood hazard map for the city of Pereira reported in the Land use plan. 1\/n <a href=\"https:\/\/t.co\/iOSFeZ3nYs\">pic.twitter.com\/iOSFeZ3nYs<\/a><\/p>\n<p>&mdash; Helbert Garc\u00eda-Delgado (@HelbertSchneid1) <a href=\"https:\/\/twitter.com\/HelbertSchneid1\/status\/1491254739203682304?ref_src=twsrc%5Etfw\">February 9, 2022<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">In the long run, people may question the meaning of elaborating land use plans. Unfortunately, It seems more like a bureaucratic procedure rather than a risk management process&#8230;Meanwhile, vulnerable people are being killed by this ineffectiveness.<\/p>\n<p>&mdash; Helbert Garc\u00eda-Delgado (@HelbertSchneid1) <a href=\"https:\/\/twitter.com\/HelbertSchneid1\/status\/1491254749219651589?ref_src=twsrc%5Etfw\">February 9, 2022<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>.<\/p>\n<p><a href=\"https:\/\/twitter.com\/HelbertSchneid1\/status\/1491254739203682304\">In the same Twitter thread, Helbert makes the following observations<\/a>:<\/p>\n<p><em>Note how in the mentioned plan [in his first tweet above], the affected area is not recognized as a susceptible area to landsliding. Although the steep slope is north of the Ot\u00fan River, on the Dosquebradas municipality side, the runout distance was enough to cross the stream&#8230;Most deaths occurred on the Pereira side of the Ot\u00fan River. The available visual material is clear in that the south margin of the Ot\u00fan River was heavily damaged and where most fatalities were located&#8230;.Does this mean that geoscientists and engineers failed to recognize this possible scenario? The historical data shows that this area has been affected by fatal landslides in the past. Therefore, the scenario is not new or unexpected.<\/em><\/p>\n<div>\n<div class=\"css-1dbjc4n r-1adg3ll r-1ny4l3l\">\n<div class=\"css-1dbjc4n\">\n<article class=\"css-1dbjc4n r-1loqt21 r-18u37iz r-1ut4w64 r-1ny4l3l r-1udh08x r-1qhn6m8 r-i023vh r-o7ynqc r-6416eg\" role=\"article\" aria-labelledby=\"id__178n5jozxxe id__31gxz8hbx01 id__e3hac57cmy id__9187rpd0we7 id__py6d6eeryu9 id__8dlln3ilh72 id__7m54wuu35hd id__v5lqzgz6o7 id__t26p7e4b27k id__3f1w9zehrwp id__bgxbajty9wj id__tn3wozp656 id__xfhql53sxw id__vh8nzd0gk8r\" data-testid=\"tweet\">\n<div class=\"css-1dbjc4n r-eqz5dr r-16y2uox r-1wbh5a2\">\n<div class=\"css-1dbjc4n r-16y2uox r-1wbh5a2 r-1ny4l3l\">\n<div class=\"css-1dbjc4n\">\n<div class=\"css-1dbjc4n r-18u37iz\">\n<div class=\"css-1dbjc4n r-1iusvr4 r-16y2uox r-1777fci r-kzbkwu\">\n<div class=\"css-1dbjc4n\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<p>So, this is a case of known hazard and established risk, but the mechanisms have not been in place to protect the population.\u00a0 This is a scenario that we see over and over again across the world, with tragic outcomes.\u00a0 Colombia has a substantial landslide hazard &#8211; <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2020\/02\/25\/landslides-in-colombia\/\">I&#8217;ve posted previously about research quantifying the level of loss<\/a>,\u00a0 which provides a better analysis of <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2012\/11\/16\/losses-from-landslides-in-colombia\/\">an earlier analysis that I posted<\/a>, whilst <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2015\/08\/24\/latin-america-and-the-caribbean-1\/\">Sergio Sepulveda and I published an open access article a few years ago looking at patterns of landslide loss across South America<\/a> (<a href=\"http:\/\/www.nat-hazards-earth-syst-sci.net\/15\/1821\/2015\/nhess-15-1821-2015.html\">Sepulveda and Petley 2015<\/a>)<\/p>\n<p>.<\/p>\n<h4>Reference<\/h4>\n<p>Sep\u00falveda, S.A. and Petley, D.N. 2015.\u00a0<a href=\"http:\/\/www.nat-hazards-earth-syst-sci.net\/15\/1821\/2015\/nhess-15-1821-2015.html\">Regional trends and controlling factors of fatal landslides in Latin America and the Caribbean<\/a>.\u00a0<em>Natural Hazards and Earth System Sciences<\/em>,\u00a0<strong>15<\/strong>, 1821-1833,<a href=\"http:\/\/www.nat-hazards-earth-syst-sci.net\/15\/1821\/2015\/nhess-15-1821-2015.html\">\u00a0doi:10.5194\/nhess-15-1821-2015<\/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>Heavy rainfall triggered a large landslide in the town of Dosquebradas in Colombia yesterday, killing at least 16 people, injuring 34 more<!-- 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":40177,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[359,469,959,122],"class_list":["post-40174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-colombia","tag-featured","tag-landslide-report","tag-south-america"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/40174","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=40174"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/40174\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/40177"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=40174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=40174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=40174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}