{"id":30302,"date":"2019-03-01T07:10:13","date_gmt":"2019-03-01T07:10:13","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=30302"},"modified":"2019-03-04T06:00:39","modified_gmt":"2019-03-04T06:00:39","slug":"us101","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2019\/03\/01\/us101\/","title":{"rendered":"US101 at Brookings: an interesting, disruptive landslide"},"content":{"rendered":"

US101 at Brookings: an interesting, disruptive landslide<\/h4>\n

On Tuesday, significant movement occurred on a large landslide in Oregon, closing the important US101 highway near to the coastal town of Brookings.\u00a0 This landslide (location 42.219, -124.374), which seems to have been triggered by heavy rainfall, is captured very nicely in a drone image Tweeted by Tidewater Contractors<\/a>:-<\/p>\n

\"US101\"

The major landslide on US101 at Brookings. Image via Tidewater Contractors on Twitter<\/a><\/p><\/div>\n

.<\/p>\n

Tidewater Contractors have also tweeted<\/a> this rather splendid image of the main part of the landslide:-<\/p>\n

\"US101\"

The main body of the US101 landslide near to Brookings in Oregon. Image tweeted by Tidewater Contractors<\/a>.<\/p><\/div>\n

.<\/p>\n

This appears to be a large, moderately deep earthflow<\/a>.\u00a0 Note the very clear scarps at the crown of the landslide and the beautiful array of tension cracks in the area in which the landslide mass steepened.\u00a0 Note also the very clear lateral scarps on the lower slopes towards the highway.\u00a0 The disruption to the road is very significant; Tidewater Contractors have tweeted a drone video showing the road damage<\/a>, whilst the image\u00a0 below shows the impacts in more detail:-<\/p>\n

\"US101\"

Road damage on Highway 101 near to Brookings caused by the large earthflow on Tuesday. Image tweeted by Tidewater Contractors<\/a>.<\/p><\/div>\n

.<\/p>\n

There is an interesting article on Willamette Week<\/a> that examines these types of landslide in Oregon in the context of climate change<\/a>, drawing upon recent studies and expert knowledge.\u00a0 They note that these areas are being affected by both increases in groundwater level and by increased erosion of the coastal bluffs due to increased wave energy.\u00a0 This is the Google Earth imagery of the US101 landslide, with the image dated 3rd July 2016:-<\/p>\n

\"US101\"

Google Earth imagery from July 2016 showing the site of the US101 landslide near to Brookings in Oregon.<\/p><\/div>\n

.<\/p>\n

The landslide is clearly identifiable in the Google Earth imagery, and there is evidence that movement has disrupted the road.\u00a0 The image demonstrates that the toe of the landslide is being eroded by wave action, leaving the slope more susceptible to the effects of increased groundwater levels.<\/p>\n

The road is set to be closed for at least a month.<\/p>\n","protected":false},"excerpt":{"rendered":"

On Tuesday, significant movement occurred on a large landslide in Oregon, closing the important US101 highway near to the coastal town of Brookings. <\/p>\n","protected":false},"author":22,"featured_media":30309,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[534,469,103,725,189,48],"class_list":["post-30302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-earthflow","tag-featured","tag-highway","tag-north-america","tag-oregon","tag-usa"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/30302","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=30302"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/30302\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/30309"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=30302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=30302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=30302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}