{"id":29535,"date":"2018-12-19T07:49:21","date_gmt":"2018-12-19T07:49:21","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=29535"},"modified":"2018-12-19T07:49:21","modified_gmt":"2018-12-19T07:49:21","slug":"papua-new-guinea-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2018\/12\/19\/papua-new-guinea-1\/","title":{"rendered":"Revisiting the landslides from the Mw=7.5 earthquake in Papua New Guinea on 25th February 2018"},"content":{"rendered":"

Revisiting the landslides from the Mw=7.5 earthquake in Papua New Guinea on 25th February 2018<\/h4>\n

Back in the early part of 2018 I posted on a number of occasions<\/a> about the significant landslides<\/a> triggered by the 25th February Mw=7.5 earthquake in Papua New Guinea<\/a>.\u00a0 That event was efficient at generating landslides, and it is likely that a substantial proportion of the fatalities from the earthquake were related to the multiple slope failures.\u00a0 The response of the international community to this disaster has been disappointing, which has meant that it has been difficult to ascertain the true landslide impacts.<\/p>\n

At the time it was difficult to piece together the overall effects of the landslides because satellite imagery was marred by the extensive cloud cover.\u00a0 In the months since it has been possible to get a better impression.\u00a0 This is a Planet Labs image<\/a> of the river affected by landslides near to Komo Station, collected on 12th November 2018:-<\/p>\n

\"Papua

Landslides triggered by the 2018 earthquake in Papua New Guinea. Planet Labs image, collected on 12 November 2018. Copyright Planet Labs<\/a>, used with permission.<\/p><\/div>\n

.<\/p>\n

It is worth looking at just a part of this image in more detail:-<\/p>\n

\"Papua

Detail of some of the landslides triggered by the 2018 earthquake in Papua New Guinea. Planet Labs image, collected on 12 November 2018. Copyright Planet Labs<\/a>, used with permission.<\/p><\/div>\n

.<\/p>\n

The extensive failure of the steep scarp in the northeast of the image is interesting – I guess this illustrates the strong role that slope gradient plays in determining slope failure, plus there may be an element of topographic amplification here too.\u00a0 The large flow failure<\/a> on the southern part of the image is also notable this is over 2.5 km in length.\u00a0 Along the river there is a series of significant failures, several of which are over 1 km long.\u00a0 And of course there are multiple smaller failures too.<\/p>\n

Reference<\/h4>\n

Planet Team (2018)<\/a>. Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA. https:\/\/www.planet.com\/<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Planet Labs satellite imagery now provides an understanding of the distribution of landslides triggered by the February 2018 Papua New Guinea earthquake<\/p>\n","protected":false},"author":22,"featured_media":29540,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7203],"tags":[23,469,313,314],"class_list":["post-29535","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-planet-labs","tag-earthquake","tag-featured","tag-papua-new-guinea","tag-se-asia"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/29535","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=29535"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/29535\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/29540"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=29535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=29535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=29535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}