{"id":15701,"date":"2015-08-03T07:38:46","date_gmt":"2015-08-03T07:38:46","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=15701"},"modified":"2015-08-03T07:38:46","modified_gmt":"2015-08-03T07:38:46","slug":"the-fukaminato-river-landslide-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2015\/08\/03\/the-fukaminato-river-landslide-1\/","title":{"rendered":"The Fukaminato River landslide in Japan"},"content":{"rendered":"<h5>The Fukaminato River landslide in Kyushu, Japan<\/h5>\n<p>Last week <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2015\/07\/29\/two-landslide-videos-07-2015\/\">I highlighted the ongoing landslide on the Fukaminato River in Japan<\/a>, including a video of one of the most recent failure events.\u00a0 There is now a <a href=\"https:\/\/www.youtube.com\/watch?v=B3J-sizwzI0\">better version of the video available on Youtube<\/a>:<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/B3J-sizwzI0\" width=\"640\" height=\"360\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>.<\/p>\n<p>The video seems to show the main collapse event, including the initial sliding and the dramatic fragmentation of the landslide mass and, later on, the arrival of the debris flow wave downstream.\u00a0 There is also seem quite excellent drone footage of the site, collected from before the most recent failure, <a href=\"https:\/\/www.youtube.com\/watch?v=8BOa5Ov2kt0&amp;feature=youtu.be\">also on a Youtube video<\/a>:<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/8BOa5Ov2kt0\" width=\"640\" height=\"360\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>.<\/p>\n<p>The drone footage provides a good overview of the landslide site, first looking upslope at the failure zone and upper reaches of the debris track:<\/p>\n<div id=\"attachment_15703\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2015\/08\/15_08-japan-1-e1438585881912.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15703\" class=\"size-full wp-image-15703\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2015\/08\/15_08-japan-1-e1438585881912.jpg\" alt=\"Fukaminato River landslide\" width=\"640\" height=\"358\" \/><\/a><p id=\"caption-attachment-15703\" class=\"wp-caption-text\">Fukaminato River landslide via <a href=\"https:\/\/www.youtube.com\/watch?v=8BOa5Ov2kt0&amp;feature=youtu.be\">Youtube<\/a><\/p><\/div>\n<p>.<\/p>\n<p>And second, looking downslope along the debris flow track.\u00a0 Note the plume of sediment in the bay:<\/p>\n<div id=\"attachment_15706\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2015\/08\/15_08-japan-2-e1438586098969.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15706\" class=\"size-full wp-image-15706\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2015\/08\/15_08-japan-2-e1438586098969.jpg\" alt=\"Fukaminato River landslide\" width=\"640\" height=\"416\" \/><\/a><p id=\"caption-attachment-15706\" class=\"wp-caption-text\">Fukaminato River landslide via <a href=\"https:\/\/www.youtube.com\/watch?v=8BOa5Ov2kt0&amp;feature=youtu.be\">Youtube<\/a><\/p><\/div>\n<p>.<\/p>\n<p>The Fukaminato River landslide is located at 31.590N, 130.795E.\u00a0 This is a perspective view of the landslide site, taken in 2010 via Google Earth:<\/p>\n<div id=\"attachment_15708\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2015\/08\/15_08-japan-3-e1438586416268.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15708\" class=\"size-full wp-image-15708\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2015\/08\/15_08-japan-3-e1438586416268.jpg\" alt=\"Fukaminato River landslide\" width=\"640\" height=\"396\" \/><\/a><p id=\"caption-attachment-15708\" class=\"wp-caption-text\">Fukaminato River landslide via Google Earth<\/p><\/div>\n<p>.<\/p>\n<p>Note the very extensive amount of quarrying that has been undertaken in this area, including at the landslide site.\u00a0 However, the active quarrying does not now seem to be occurring where the failures have been initiated.\u00a0 Perhaps the old quarrying work left the slopes in an oversteepened condition?\u00a0 The trigger appears to have been initiated by the prolonged heavy rainfall that this area has suffered over the last few weeks.<\/p>\n<p>The Fukaminato River landslide site is close to Sakurajima volcano, which is currently very active.\u00a0 Whilst there is no apparent link between the volcano and the landslide, I cannot resist including some of the amazing videos of the explosive eruption of\u00a0Sakurajima:<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/rVBn8R4qzYQ\" width=\"640\" height=\"360\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>.<\/p>\n<h5>Acknowledgement<\/h5>\n<p>Thanks to <a href=\"https:\/\/www.ldeo.columbia.edu\/user\/cstark\">Colin Stark<\/a> of the <a href=\"https:\/\/www.ldeo.columbia.edu\/\">Lamont-Doherty Earth Observatory at Columbia University<\/a>, who did almost all the work that went into this post.<\/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>Even better footage has now emerged of the Fukaminato River landslide in Japan, which appears to be occurring at the site of an old quarry<!-- 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":15703,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[881,469,361,959,963,471],"class_list":["post-15701","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-east-asia","tag-featured","tag-japan","tag-landslide-report","tag-landslide-video","tag-quarry"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/15701","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=15701"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/15701\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/15703"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=15701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=15701"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=15701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}