{"id":33750,"date":"2020-04-27T06:52:22","date_gmt":"2020-04-27T06:52:22","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=33750"},"modified":"2020-04-27T06:52:22","modified_gmt":"2020-04-27T06:52:22","slug":"tendepo-landslide","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2020\/04\/27\/tendepo-landslide\/","title":{"rendered":"Planet Labs high resolution imagery of the Tendepo landslide"},"content":{"rendered":"

Planet Labs high resolution imagery of the Tendepo landslide<\/h4>\n

Last month I noted that on Saturday 21 March 2020 the significant Tendepo landslide<\/a> occurred in Tambul-Nebilyer district in Papua New Guinea<\/a>, resulting in 12 fatalities.\u00a0 This landslide was triggered by heavy rainfall.<\/p>\n

Planet Labs<\/a> have, once again, very kindly collected high resolution imagery of this landslide (and indeed the one at Kegesuglo<\/a>, which I will post this week) – thanks once again to all at Planet Labs<\/a>, especially Robert Simmon, for obtaining the amazing images.<\/p>\n

This is the SkySat image, collected on 18 April 2020:-<\/p>\n

\"SkySat

Planet Labs<\/a> SkySat image of the Tendepo landslide, collected on 18 April 2020. Copyright Planet Labs, used with permission.<\/p><\/div>\n

.<\/p>\n

The source of the landslide is to the southwest, with the landslide initially moving towards the north, before following the topography to flow in a generally eastward direction.\u00a0 It is clear that the landslide has spread considerably.\u00a0 This is a more detailed view of the source:-<\/p>\n

\"Source

Planet Labs<\/a> SkySat image of the source area of the Tendepo landslide, collected on 18 April 2020. Copyright Planet Labs, used with permission.<\/p><\/div>\n

.<\/p>\n

This is clearly a quite deep-seated landslide in residual soil.\u00a0 Note the very linear feature on the southeast portion of the scar, which appears to extend beyond the boundary of the landslide to the south.\u00a0 This would seem to indicate that the landslide has exploited an existing weakness.\u00a0 This can be seen in the image below from my original post:-<\/p>\n

\"Tendepo:

Tendepo landslide: the scar of the major landslide in Tambul-Nebilyer district in Papua New Guinea on 21 March 2020. Image by Caligen Giluwe Ice via The Watchers<\/a>.<\/p><\/div>\n

.<\/p>\n

After failure the landslide has changed direction and spread across the lower angled slope:-<\/p>\n

\"Deposit

Planet Labs<\/a> SkySat image of the deposit of the Tendepo landslide, collected on 18 April 2020.<\/p><\/div>\n

.<\/p>\n

I suspect that there is some entrainment of soil in the upper portion of this part of the landslide, with deposition starting at about the half way point, probably controlled by slope gradient.\u00a0 The greatest volume of material appears to have been deposited in the south-east part of the slide. I suspect that there is some evidence of excavation to recover victims towards the toe.<\/p>\n

It is very rare to get decent information about landslides in Papua New Guinea, even though they are a substantial hazard.\u00a0 Thus, this Planet Labs<\/a> imagery has provided rare and invaluable insight into the problems there.<\/p>\n

Reference<\/h4>\n

Planet Team (2020). 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 have succeeded to collecting high resolution SkySat imagery of the Tendepo landslide in Papua New Guinea on 21 March 2020<\/p>\n","protected":false},"author":22,"featured_media":33753,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[469,959,313,1205,521,314],"class_list":["post-33750","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-featured","tag-landslide-report","tag-papua-new-guinea","tag-planet-labs","tag-satellite-image","tag-se-asia"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/33750","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=33750"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/33750\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/33753"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=33750"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=33750"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=33750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}