{"id":357,"date":"2009-09-04T12:28:00","date_gmt":"2009-09-04T12:28:00","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/2009\/09\/04\/the-cikangkareng-village-landslide-indonesia\/"},"modified":"2010-10-21T13:37:02","modified_gmt":"2010-10-21T17:37:02","slug":"the-cikangkareng-village-landslide-indonesia","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2009\/09\/04\/the-cikangkareng-village-landslide-indonesia\/","title":{"rendered":"The Cikangkareng village landslide, Indonesia"},"content":{"rendered":"

As I reported a couple of days ago<\/a>, the Mw=7.0 earthquake in Indonesia on Wednesday triggered a substantive landslide in the village of Cikangkareng in West Java. This landslide buried ten houses, a mosque and an amusement (video game) arcade with the loss of about 57 lives. AP have today released images<\/a> of the landslide that are quite interesting. In particular this one: <\/p>\n

\"\"Why is this interesting? Well, first lets note that we should ignore the red colour on the face of the scarp – this is a mantle of tropical soil that have come down from the crown of the slide (you can see the red soil at the very top of the landslide – this is of course typical of a tropical area). More important is the structure behind the mantle of soil debris. Here it is clear that the rocks are horizontally-bedded (or at least nearly so). Such a large failure in horizontally-bedded rocks is certainly not unprecedented, but is slightly surprising. The debris is very coarse-grained and has travelled quite a long way, which is also interesting.<\/p>\n

Often, failures like this are associated with some process that has caused undercutting of the toe – for example wave erosion. Clearly there are no waves here – I wonder if there had been any activity to quarry stone from the slope, perhaps as a building material?<\/p>\n

I am reminded of the Manshiet Nasser landslide<\/a> in Cairo a year ago:<\/p>\n

\"\"In that case the key cause was probably quarrying at the foot of the slope. <\/p>\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

As I reported a couple of days ago, the Mw=7.0 earthquake in Indonesia on Wednesday triggered a substantive landslide in the village of Cikangkareng in West Java. This landslide buried ten houses, a mosque and an amusement (video game) arcade with the loss of about 57 lives. AP have today released images of the landslide that are quite interesting. In particular this one: Why is this interesting? Well, first lets …<\/p>\n","protected":false},"author":22,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[23,141,959,56],"class_list":["post-357","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-earthquake","tag-indonesia","tag-landslide-report","tag-rockfall"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/357","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=357"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/357\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}