{"id":26381,"date":"2017-12-23T09:56:27","date_gmt":"2017-12-23T09:56:27","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=26381"},"modified":"2017-12-23T09:56:27","modified_gmt":"2017-12-23T09:56:27","slug":"villa-santa-lucia-rock-avalanche","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2017\/12\/23\/villa-santa-lucia-rock-avalanche\/","title":{"rendered":"Villa Santa Lucia rock avalanche – images of the source zone"},"content":{"rendered":"

Villa Santa Lucia rock avalanche – images of the source zone<\/h4>\n

Over the last few days images have become available of the source zone of the Villa Santa Lucia rock avalanche<\/a>, which struck southern Chile last Saturday<\/a>.\u00a0 These include several images of the hillside prior to failure, most notably eight images<\/a> tweeted by @OldClimber2<\/a> that provide views of the scarp area taken in April 2017.\u00a0 This image shows the crown of the scarp, which displays large tension cracks and a fractured rock mass:-<\/span><\/p>\n

\"Villa

The crown of the source artea of the Villa Santa Lucia rock avalanche. Image<\/a> via @OldClimber2<\/a> on Twitter.<\/p><\/div>\n

.<\/p>\n

Whilst this image shows the deposit in the valley below, which was probably a mixture of colluvium and moraine (others will be able to judge this better than can I).<\/p>\n

\"Villa

The deposit below the scarp of the site of the Cilla Santa Lucia rock avalanche in Chile. Image<\/a> via @OldClimber2<\/a> on Twitter<\/p><\/div>\n

.<\/p>\n

Meanwhile, @Sub_Interior<\/b><\/span><\/a> have tweeted images of the site after the landslide<\/a>.\u00a0 This image shows the landslide scarp:-<\/p>\n

\"Villa

The landslide scarp for the Villa Santa Lucia rock avalanche. Image<\/a> via @Sub_Interior<\/a> on Twitter<\/p><\/div>\n

.<\/p>\n

Whilst this image shows the scarp and the start of the debris trail:-<\/p>\n

\"

The scarp and debris train from the Villa Santa Lucia rock avalanche. Image<\/a> via @Sub_Interior<\/a> on Twitter.<\/p><\/div>\n

.<\/p>\n

Based on this it appears that the landslide consisted of a large volume rock slope failure that collapsed onto the colluvium and moraine at the based at the slope.\u00a0 The images suggest that this the debris at least partially saturated (note the spring within the deposit nprior to failure) and it may also have contained substantial amounts of ice.\u00a0 This deposit has mobilised to form a complex, high velocity rock avalanche \/ debris flow.\u00a0 This image shows the track of the landslide:-<\/p>\n

\"Villa

The debris trail from the Villa Santa Lucia rock avalanche. Image<\/a> via @Sub_Interior<\/a> on Twitter.<\/p><\/div>\n

.<\/p>\n

The trail suggest a high energy flow.\u00a0 It is a part of this landslide that struck the town of Villa Santa Lucia, with tragic consequences.<\/p>\n","protected":false},"excerpt":{"rendered":"

Images of the Villa Santa Lucia rock avalanche, inclduing prefailure views of the source and post failure views of the track, are now online<\/p>\n","protected":false},"author":22,"featured_media":26402,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[1046,469,959,306,122],"class_list":["post-26381","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-chile","tag-featured","tag-landslide-report","tag-rock-avalanche","tag-south-america"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/26381","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=26381"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/26381\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/26402"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=26381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=26381"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=26381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}