{"id":3933,"date":"2011-11-15T18:04:22","date_gmt":"2011-11-15T18:04:22","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=3933"},"modified":"2011-11-15T18:04:23","modified_gmt":"2011-11-15T18:04:23","slug":"interesting-coastal-landslide-in-san-pedro-california","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2011\/11\/15\/interesting-coastal-landslide-in-san-pedro-california\/","title":{"rendered":"Interesting coastal landslide in San Pedro, California"},"content":{"rendered":"

News today of an ongoing landslide affecting San Pedro in California.\u00a0 This slide, which has developed over the last few weeks, has closed the coast road.\u00a0 Real concern about the site emerged a couple of weeks ago<\/a>; since then the problem has become far worse.\u00a0 At the moment I can’t find a decent still image of the site, but this still from this news report<\/a> gives an idea of the magnitude of the problem (NB this is definitely not a sinkhole – it is a landslide):<\/p>\n

\"\"<\/a><\/p>\n

Fortunately, it is only the road and utility lines that are threatened.<\/p>\n

The site is well-covered by Google Earth imagery.\u00a0 This is the most recent perspective view from March this year:<\/p>\n

\"\"<\/a><\/p>\n

Compare that with an image from two years ago:<\/p>\n

\"\"<\/a><\/p>\n

There has been a very noticeable loss of material on the right side(from this view) of the landslide, which shows the development of a progressive failure.\u00a0 I would anticipate that the loss of this buttress has destabilised the remainder of the slope.\u00a0 Thus, at least on first inspection, this just looks to be a natural failure caused by erosion by the sea.\u00a0 Where the road is so close to the cliff edge, and materials are weak, this is to be expected.<\/p>\n

Repair of such a section would be very expensive and environmentally damaging as a large toe support will be needed, with a large volume of fill behind.\u00a0 Relocating the road inland looks to be the sensible option, if that is possible.<\/p>\n

Any comments from those nearer the scene?\u00a0 Any better news reports?<\/p>\n","protected":false},"excerpt":{"rendered":"

Brief report on a coastal landslide affecting a road in San Pedro, California<\/p>\n","protected":false},"author":22,"featured_media":3934,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[137,556,959,48],"class_list":["post-3933","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-california","tag-features","tag-landslide-report","tag-usa"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/3933","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=3933"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/3933\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/3934"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=3933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=3933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=3933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}