{"id":40759,"date":"2022-05-03T06:49:05","date_gmt":"2022-05-03T06:49:05","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=40759"},"modified":"2022-05-03T06:49:05","modified_gmt":"2022-05-03T06:49:05","slug":"pilar-landslide-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2022\/05\/03\/pilar-landslide-1\/","title":{"rendered":"The Pilar landslide in the Philippines"},"content":{"rendered":"

The Pilar landslide in the Philippines<\/h4>\n

One of the largest landslides triggered by Tropical Storm Megi last month<\/a> occurred at Pilar, a little to the southeast of the town of Abuyong in Leyte.\u00a0 This location, which is also known as Dang’s Beach Resort, suffered from one of the three very large landslides during the storm<\/a>.\u00a0 It is located at 10.717, 125.040.\u00a0 The latest NDRRMC situation report lists 53 known fatalities at this site<\/a>.<\/p>\n

Planet<\/a> has succeeded in collecting a high resolution satellite image of the landslide at Pilar:-<\/p>\n

 <\/p>\n

\"The

The Pilar landslide in the Philippines. Image copyright Planet<\/a>, used with permission. Image dated 20 April 2022.<\/em><\/p><\/div>\n

.<\/p>\n

By way of comparison, this is a Google Earth image of the same area, collected in June 2016:-<\/p>\n

\"Google

Google Earth image from June 2016 showing the site of the Pilar landslide in the Philippines.<\/em><\/p><\/div>\n

.<\/p>\n

A particularly interesting aspect of this landslide is that it clearly generated destructive displacement waves when it reached the sea.\u00a0 The damage to the main part of the seaside resort appears to be consistent with damage caused by these waves:-<\/p>\n

\"Damage

Damage caused by the Pilar landslide in the Philippines. Much of this appears to be consistent with the impact of a displacement wave. Image copyright Planet<\/a>, used with permission. Image dated 20 April 2022.<\/em><\/p><\/div>\n

.<\/p>\n

There is a paper in the Annals of Tropical Research (Cabelin and Jadina 2019<\/a>) that analyses of the soils in landslide areas in the Cadac-an Watershed, which includes the site of this landslide.\u00a0 It notes that:<\/p>\n

“…it was concluded that the soils are susceptible to landslide occurrence.<\/em><\/p>\n

“It is highly recommended to conduct constant assessment and monitoring of landslide occurrences in the area. Moreover, it is encouraged to plant more trees, prohibit tree cutting, delineate danger zone , establish more rain gauge stations and provide early warning systems to somehow prepare for the consequences brought about by landslides.”<\/em><\/p>\n

It is hard to disagree.<\/p>\n

.<\/p>\n

References and acknowledgement<\/h4>\n

Planet Team (2022). Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA. https:\/\/www.planet.com\/<\/a><\/p>\n

Cabelin, J.P. and Jadina, B.C. 2019.\u00a0 Physical characteristics of soils in landslide areas of Cadac-an Watershed in Leyte, Philippines<\/a>.\u00a0 Annals of Tropical Research<\/em> 41<\/strong> (2) 11-129.<\/p>\n

Thanks to Robert Simmon and Anne Pelligrino for their support in acquiring the image.<\/p>\n

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

Planet have captured a high resolution satellite image of the Pilar landslide in the Philippines, which killed 53 people during Tropical Storm Megi.<\/p>\n","protected":false},"author":22,"featured_media":40762,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7203],"tags":[469,478,252,898,521,314,593],"class_list":["post-40759","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-planet-labs","tag-featured","tag-megi","tag-philippines","tag-planet","tag-satellite-image","tag-se-asia","tag-tropical-storm"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/40759","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=40759"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/40759\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/40762"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=40759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=40759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=40759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}