{"id":8128,"date":"2014-02-25T07:44:57","date_gmt":"2014-02-25T07:44:57","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=8128"},"modified":"2014-02-25T13:48:03","modified_gmt":"2014-02-25T13:48:03","slug":"mount-la-perouse-rock-avalanche-2","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2014\/02\/25\/mount-la-perouse-rock-avalanche-2\/","title":{"rendered":"Mount La Perouse rock avalanche: more images"},"content":{"rendered":"<h5>The Mount La Perouse rock avalanche<\/h5>\n<p>The <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2014\/02\/22\/mount-la-perouse-rock-avalanche\/\">Mount La Perouse rock avalanche<\/a> nine days ago is a very interesting landslide.\u00a0 My original post, based on the seismic data of <a href=\"http:\/\/www.ldeo.columbia.edu\/user\/cstark\">Colin Stark,<\/a> Cl\u00e9ment Hibert and Goran Ekstrom is <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2014\/02\/20\/new-alaska-landslide\/\">here<\/a>; the first images of it, as collected by Drake Olson, <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2014\/02\/22\/mount-la-perouse-rock-avalanche\/\">are here<\/a>.<\/p>\n<h5>Satellite data<\/h5>\n<p>Landsat 8 passed over the landslide on Saturday; nature was kind to us by providing a cloud-free day, so the landslide has been images well.\u00a0 <a href=\"http:\/\/www.ldeo.columbia.edu\/user\/cstark\">Colin Stark<\/a> has run a quick initial process of the data, which reveal the following parameters for the Mount La Perouse rock avalanche:<\/p>\n<ul>\n<li>Maximum length (from the crown to the toe: about 7,400 metres<\/li>\n<li>Maximum elevation (i.e. height of the crown of the source area): about 2,800 metres<\/li>\n<li>Minimum elevation (i.e. the height of the toe of the landslide): about 1060 metres<\/li>\n<\/ul>\n<p>Colin has draped the Landsat 8 data on to a digital elevation model to provide a view of the dynamics of the landslide:<\/p>\n<div id=\"attachment_8130\" style=\"width: 504px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-1.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8130\" class=\"size-full wp-image-8130 \" alt=\"Mount la Perouse rock avalanche\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-1.png\" width=\"494\" height=\"724\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-1.png 494w, https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-1-204x300.png 204w\" sizes=\"auto, (max-width: 494px) 100vw, 494px\" \/><\/a><p id=\"caption-attachment-8130\" class=\"wp-caption-text\">Copyright <a href=\"http:\/\/www.ldeo.columbia.edu\/user\/cstark\">Colin Stark<\/a>, used with permission.\u00a0 Image: Landsat 8<\/p><\/div>\n<p style=\"text-align: center;\">..<\/p>\n<div id=\"attachment_8131\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-2.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8131\" class=\"size-full wp-image-8131 \" alt=\"Mount la Perouse rock avalanche\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-2.png\" width=\"640\" height=\"429\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-2.png 1114w, https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-2-300x201.png 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-2-1024x687.png 1024w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><p id=\"caption-attachment-8131\" class=\"wp-caption-text\">Copyright <a href=\"http:\/\/www.ldeo.columbia.edu\/user\/cstark\">Colin Stark<\/a>, used with permission. Image: Landsat 8<\/p><\/div>\n<p style=\"text-align: center;\">..<\/p>\n<h5>Some additional images of the Mount La Perouse rock avalanche<\/h5>\n<p><a href=\"http:\/\/www.flydrake.com\/\">Drake Olson<\/a>, via <a href=\"http:\/\/www.unbc.ca\/ecosystem-science-management\/geertsema-dr-marten\">Marten Geertsema<\/a> at UNBC, has provided some additional photographs of the landslide.\u00a0 First, this is a view of the landslide from the air.\u00a0 Note the remarkable super-elevation of the landslide (i.e. the way in which it has run up the sides of the valley):<\/p>\n<div id=\"attachment_8132\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-3.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8132\" class=\"size-full wp-image-8132 \" alt=\"Mount la Perouse rock avalanche\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-3.jpg\" width=\"640\" height=\"480\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-3.jpg 640w, https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-3-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><p id=\"caption-attachment-8132\" class=\"wp-caption-text\">Copyright <a href=\"http:\/\/www.flydrake.com\/\">Drake Olson<\/a> \u2013 used with permission<\/p><\/div>\n<p style=\"text-align: center;\">..<\/p>\n<p>This is a really vast landslide.\u00a0 To give an impression of the scale, this is the landslide toe.\u00a0 If you look carefully you will just be able to see Drake&#8217;s aircraft:<\/p>\n<div id=\"attachment_8133\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-4.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8133\" class=\"size-full wp-image-8133 \" alt=\"Mount la Perouse rock avalanche\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-4.jpg\" width=\"640\" height=\"480\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-4.jpg 640w, https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-4-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><p id=\"caption-attachment-8133\" class=\"wp-caption-text\">Copyright <a href=\"http:\/\/www.flydrake.com\/\">Drake Olson<\/a> \u2013 used with permission<\/p><\/div>\n<p>..<\/p>\n<p>We are all indebted to Drake for collecting these wonderful images.\u00a0 Here he is sitting on the landslide debris:<\/p>\n<div id=\"attachment_8134\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-5.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8134\" class=\"size-full wp-image-8134 \" alt=\"Mount la Perouse rock avalanche\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-5.jpg\" width=\"640\" height=\"480\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-5.jpg 640w, https:\/\/blogs.agu.org\/landslideblog\/files\/2014\/02\/14_02-Mount-La-Perouse-5-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><p id=\"caption-attachment-8134\" class=\"wp-caption-text\">Copyright <a href=\"http:\/\/www.flydrake.com\/\">Drake Olson<\/a> \u2013 used with permission<\/p><\/div>\n<p>..<\/p>\n<h5>Acknowledgements<\/h5>\n<p>This post uses images and information collected by Colin Stark.\u00a0 He would like to acknowledge NSF, which funded the research under the following schemes:<\/p>\n<ul>\n<li><a href=\"http:\/\/www.nsf.gov\/funding\/pgm_summ.jsp?pims_id=13690\" target=\"_blank\">Geomorphology and Land-use Dynamics<\/a> &amp; Geophysics programs under <a href=\"http:\/\/www.nsf.gov\/awardsearch\/showAward?AWD_ID=1227083&amp;HistoricalAwards=false\" target=\"_blank\">award #1227083<\/a><\/li>\n<li><a href=\"http:\/\/www.nsf.gov\/div\/index.jsp?div=CMMI\" target=\"_blank\">Division of Civil, Mechanical, and Manufacturing Innovation<\/a> and the Hazards SEES program under <a href=\"http:\/\/www.nsf.gov\/awardsearch\/showAward?AWD_ID=1331499\" target=\"_blank\">award #1331499<\/a><\/li>\n<\/ul>\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>Satellite images and additional photographs are now available of the Mount La Perouse rock avalanche. This is a big landslide &#8211; runout distance is >7 km<!-- 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":8132,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[340,469,959,306,25,48],"class_list":["post-8128","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-alaska","tag-featured","tag-landslide-report","tag-rock-avalanche","tag-satellite","tag-usa"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/8128","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=8128"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/8128\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/8132"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=8128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=8128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=8128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}