{"id":37599,"date":"2021-05-07T08:36:56","date_gmt":"2021-05-07T08:36:56","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=37599"},"modified":"2021-05-07T08:36:56","modified_gmt":"2021-05-07T08:36:56","slug":"mount-kekachi","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2021\/05\/07\/mount-kekachi\/","title":{"rendered":"Mount Kekachi: an interesting rock slope failure and rock avalanche in Japan"},"content":{"rendered":"<h4>Mount Kekachi: an interesting rock slope failure and rock avalanche in Japan<\/h4>\n<p>Yesterday the <a href=\"https:\/\/twitter.com\/toyama_sangaku\">Toyama Prefectural Police Mountain Guard<\/a> <a href=\"https:\/\/twitter.com\/toyama_sangaku\/status\/1390201323069468674\">tweeted a set of images<\/a> of the aftermath of a large <a href=\"https:\/\/blogs.agu.org\/landslideblog\/?s=rock+avalanche&amp;submit.x=0&amp;submit.y=0&amp;mswhere=blog\">rock slope failure and rock avalanche<\/a> from the flanks of Mount Kekachi in Toyama Province, Japan:-<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"ja\" dir=\"ltr\">\u3010\u6bdb\u52dd\u5c71\u5927\u660e\u795e\u5c3e\u6839\u5317\u5074\u659c\u9762\u3067\u306e\u5927\u898f\u6a21\u306a\u571f\u7802\u5d29\u308c\u767a\u751f\u3011<br \/>\uff15\u6708\uff16\u65e5\u306e\u770c\u8b66\u30d8\u30ea\u300c\u3064\u308b\u304e\u300d\u306e\u30d1\u30c8\u30ed\u30fc\u30eb\u3067\u3001\u5927\u660e\u795e\u5c3e\u6839\u5317\u5074\u659c\u9762\u3067\u5927\u898f\u6a21\u306a\u571f\u7802\u5d29\u308c\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u571f\u7802\u306f\u5927\u660e\u795e\u6ca2\uff5e\u963f\u90e8\u6728\u8c37\u4e0b\u90e8\u306e\u7802\u9632\u5830\u5824\u307e\u3067\u5c4a\u3044\u3066\u3044\u307e\u3059\u3002\u6bdb\u52dd\u8c37\u3084\u963f\u90e8\u6728\u8c37\u3078\u306e\u767b\u5c71\u3084\u5c71\u30b9\u30ad\u30fc\u3092\u8a08\u753b\u3057\u3066\u3044\u308b\u65b9\u306f\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<a href=\"https:\/\/twitter.com\/hashtag\/%E5%B1%B1%E5%B2%B3?src=hash&amp;ref_src=twsrc%5Etfw\">#\u5c71\u5cb3<\/a> <a href=\"https:\/\/t.co\/S6V2ceSI3X\">pic.twitter.com\/S6V2ceSI3X<\/a><\/p>\n<p>&mdash; \u5bcc\u5c71\u770c\u8b66\u5bdf\u5c71\u5cb3\u8b66\u5099\u968a (@toyama_sangaku) <a href=\"https:\/\/twitter.com\/toyama_sangaku\/status\/1390201323069468674?ref_src=twsrc%5Etfw\">May 6, 2021<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>.<\/p>\n<p>The three images provide a remarkably good view of the events.\u00a0 It is clear that this was a large detachment from a near vertical face:-<\/p>\n<div id=\"attachment_37602\" style=\"width: 809px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-37602\" class=\" wp-image-37602\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-China-1-1.jpg\" alt=\"The aftermath of the rock slope collapse and rock avalanche on Mount Kekachi in Japan. Image tweeted by the Toyama Prefectural Police Mountain Guard.\" width=\"799\" height=\"598\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-China-1-1.jpg 2392w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-China-1-1-300x224.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-China-1-1-1024x766.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-China-1-1-768x575.jpg 768w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-China-1-1-1536x1149.jpg 1536w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-China-1-1-2048x1533.jpg 2048w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><p id=\"caption-attachment-37602\" class=\"wp-caption-text\">The aftermath of the rock slope collapse and rock avalanche on Mount Kekachi in Japan.<a href=\"https:\/\/twitter.com\/toyama_sangaku\"> Image tweeted by the Toyama Prefectural Police Mountain Guard<\/a>.<\/p><\/div>\n<p>.<\/p>\n<p>The debris has then followed a very steep gully in the form of a rock avalanche.\u00a0 <a href=\"https:\/\/twitter.com\/yoshi_kariya\">Yoshi Kariya<\/a> has <a href=\"https:\/\/twitter.com\/yoshi_kariya\/status\/1390234725218865158\">estimated some statistics for the landslide<\/a>, which occurred on 6 May 2021.\u00a0 It is about 2 km long with a vertical fall of about 900 metres.\u00a0 The rock avalanche overran by a sabo dam (a check dam across the valley), but stopped a short distance further down the valley.<\/p>\n<p>In the Twitter chain <a href=\"https:\/\/twitter.com\/exp88\">Paisun88<\/a> has <a href=\"https:\/\/twitter.com\/exp88\/status\/1390226175067234311\">tweeted some images on the ground showing the rock avalanche material<\/a>:<\/p>\n<p>https:\/\/twitter.com\/exp88\/status\/1390226175067234311<\/p>\n<p>.<\/p>\n<p>The Google Earth image below shows what I interpret to be the location of the rock slope failure:-<\/p>\n<div id=\"attachment_37606\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-37606\" class=\" wp-image-37606\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-Japan-2b-scaled.jpg\" alt=\"Google Earth image showing the location of the rock slope failure on the flanks of Mount Kekachi in Japan.\" width=\"800\" height=\"575\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-Japan-2b-scaled.jpg 2560w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-Japan-2b-300x216.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-Japan-2b-1024x737.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-Japan-2b-768x553.jpg 768w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-Japan-2b-1536x1105.jpg 1536w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/05\/21_05-Japan-2b-2048x1474.jpg 2048w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-37606\" class=\"wp-caption-text\">Google Earth image showing the inferred location of the rock slope failure on the flanks of Mount Kekachi in Japan.<\/p><\/div>\n<p>.<\/p>\n<p>The Google Earth image appears to show that this is an area that had undergone intense undercutting and erosion prior to the collapse.\u00a0 It is notable that the failure has occurred in the spring.\u00a0 Whilst rock slope failures can occur at any time, there is evidence that the snowmelt season is a peak time for these events.<\/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>Mount Kekachi: an interesting rock slope failure and rock avalanche in Japan on 6 May 2021. The runout distance was about 2 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":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[881,469,361,959,306,30633],"class_list":["post-37599","post","type-post","status-publish","format-standard","hentry","category-landslide-report","tag-east-asia","tag-featured","tag-japan","tag-landslide-report","tag-rock-avalanche","tag-rock-slope-failure"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/37599","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=37599"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/37599\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=37599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=37599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=37599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}