{"id":44152,"date":"2023-07-11T06:06:34","date_gmt":"2023-07-11T06:06:34","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=44152"},"modified":"2023-07-11T06:06:34","modified_gmt":"2023-07-11T06:06:34","slug":"the-rolling-hills-estates-landslide-in-california","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2023\/07\/11\/the-rolling-hills-estates-landslide-in-california\/","title":{"rendered":"The Rolling Hills Estates landslide in California"},"content":{"rendered":"<h4>The Rolling Hills Estates landslide in California<\/h4>\n<p>It has been a busy few days in the landslide world, with major events being reported in various locations.\u00a0 The most serious is likely to be the <a href=\"https:\/\/www.theguardian.com\/world\/2023\/jul\/10\/india-floods-new-delhi-rain-record-deaths\">extreme rainfall event that has hit Himachal Pradesh and Uttarakhand in northern India<\/a>, but the true picture there remains somewhat unclear.\u00a0 There has also been extreme rainfall, with resultant landslides, in <a href=\"https:\/\/news.stv.tv\/world\/nine-people-missing-in-landslide-in-china-after-heavy-rains\">China<\/a>, <a href=\"https:\/\/www.aljazeera.com\/gallery\/2023\/7\/10\/deadly-floods-mudslides-bring-southwestern-japan-to-a-halt\">Japan<\/a>, the <a href=\"https:\/\/vtdigger.org\/2023\/07\/08\/mudslide-flooding-downed-power-lines-close-roads-in-windsor-and-rutland-counties\/\">USA<\/a>, <a href=\"https:\/\/crisis24.garda.com\/alerts\/2023\/07\/turkiye-disruptions-due-to-flooding-and-landslides-ongoing-across-northern-regions-as-of-july-10\">Turkey<\/a>, <a href=\"https:\/\/www.reuters.com\/world\/asia-pacific\/pakistan-landslide-monsoon-rains-kills-eight-children-2023-07-07\/\">Pakistan<\/a> and elsewhere. The northern hemisphere summer rainy season is only just getting going, so there is likely to be a lot more to come.<\/p>\n<p>Meanwhile, in <a href=\"https:\/\/blogs.agu.org\/landslideblog\/?s=california&amp;submit.x=49&amp;submit.y=12&amp;mswhere=blog\">California<\/a> a major landslide impacted (the ironically-named) Rolling Hills Estates, in Los Angeles County, located on the northern side of the Palos Verdes Peninsula.\u00a0 The landslide started to move rapidly on 8 July 2023, and reports indicate that movement is continuing.\u00a0 <a href=\"https:\/\/www.dailybreeze.com\/2023\/07\/09\/12-homes-in-rolling-hills-estates-evacuated-after-landslide-causes-instability\/\">Reports indicate that 12 houses have been damaged or destroyed on Peartree Lane<\/a>. The location of the landslide is approximately [33.7637, -118.3888].<\/p>\n<p>Jo<a href=\"https:\/\/www.youtube.com\/watch?v=t9qQ_ELkMms\">hn Kay has posted a drone video of the site to Youtube<\/a>, which is worth viewing:-<\/p>\n<iframe loading=\"lazy\" title=\"Rolling Hills Estates, CA Homes Destroyed by Landslides Drone Aerial Tour\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/t9qQ_ELkMms?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<p>.<\/p>\n<p>This is a still from that video:-<\/p>\n<div id=\"attachment_44155\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-44155\" class=\"wp-image-44155\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-1.jpg\" alt=\"The 8 July 2023 landslide at Rolling Hills Estates. \" width=\"800\" height=\"510\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-1.jpg 1033w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-1-300x191.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-1-1024x653.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-1-768x490.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-44155\" class=\"wp-caption-text\"><em>The 8 July 2023 landslide at Rolling Hills Estates. <a href=\"https:\/\/www.youtube.com\/watch?v=t9qQ_ELkMms\">Still from a drone video posted to Youtube by John Kay<\/a>.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>Whilst this is a view from a different angle:-<\/p>\n<div id=\"attachment_44157\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-44157\" class=\"wp-image-44157\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-2.jpg\" alt=\"An alternative view of the 8 July 2023 landslide at Rolling Hills Estates.\" width=\"800\" height=\"418\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-2.jpg 1204w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-2-300x157.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-2-1024x535.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/07\/23_07-RHE-2-768x401.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-44157\" class=\"wp-caption-text\"><em>An alternative view of the 8 July 2023 landslide at Rolling Hills Estates. <a href=\"https:\/\/www.youtube.com\/watch?v=t9qQ_ELkMms\">Still from a drone video posted to Youtube by John Kay<\/a>.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>On first inspection this appears to be a slump, possibly driven by toe erosion in the canyon?<\/p>\n<p>Loyal reader Funkenbeachin has kindly put together <a href=\"https:\/\/www.youtube.com\/watch?v=xmL_UkD_JFY\">an animation of the site using the 1 m DEM<\/a>, which might support the above interpretation:-<\/p>\n<iframe loading=\"lazy\" title=\"Rolling Hills, Peartree Lane Landslide, Palos Verdes Peninsula, California,  2023, Slope on 1-m DEM\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/xmL_UkD_JFY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<p>.<\/p>\n<p>This video also shows very clearly that this area of California is no stranger to landslides, including the <a href=\"https:\/\/www.rpvca.gov\/719\/Landslide-Management-Program\">Portuguese Bend landslide<\/a>.<\/p>\n<p>This event will of course be a devastating blow to the owners of the properties affected, all of whom have been evacuated. The images above suggest that at least some of these houses will not be habitable.<\/p>\n<p>.<\/p>\n<h4>Acknowledgement<\/h4>\n<p>Many thanks to various people who contacted me about this event.<\/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>In California a major landslide has occurred in Rolling Hills Estates, in Los Angeles County, reportedly damaging 12 houses.<!-- 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":44157,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[137,30327,469,959,725,48],"class_list":["post-44152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-california","tag-drone-video","tag-featured","tag-landslide-report","tag-north-america","tag-usa"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/44152","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=44152"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/44152\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/44157"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=44152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=44152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=44152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}