{"id":37611,"date":"2021-05-07T14:33:00","date_gmt":"2021-05-07T14:33:00","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=37611"},"modified":"2021-05-10T07:31:39","modified_gmt":"2021-05-10T07:31:39","slug":"antonina-and-morretes-2","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2021\/05\/07\/antonina-and-morretes-2\/","title":{"rendered":"The March 2011 landslides in Antonina and Morretes, Brazil"},"content":{"rendered":"

The March 2011 landslides in Antonina and Morretes, Brazil<\/h4>\n

Jefferson de Lima Pican\u00e7o and Dave Petley<\/span><\/span><\/em><\/h4>\n

On 10 and 11 March 2011 unusually intense rainfall affected the Paran\u00e1 State coast at Antonina and Morretes in Brazil<\/a>.\u00a0 This rainfall event killed four people and left two other missing, as well another 221 people injured.\u00a0\u00a0<\/span><\/p>\n

The rainfall triggered large numbers of landslides, including translational slides on steep slopes, rotational slides and mudflows.\u00a0 Downstream there was extensive flooding and large volumes of sediment were deposited.\u00a0 The images below show of the landslides triggered by this event:-<\/p>\n

\"Multiple

Multiple landslides triggered by the March 2011 rainfall event at Antonina and Morretes in Brazil.\u00a0 Photo courtesy of Renato Lima\/CENACID.<\/p><\/div>\n

.<\/p>\n

These landslides were translational slides on the interface between bedrock and regolith in stepp upland catchments.\u00a0 Note how they have been channelised to form flows that appear to have eroded large volumes of sediment out of the channels.<\/p>\n

Unsurprisingly the effects on the channels downstream were profound:-<\/p>\n

\"A

A channelised landslide triggered by the March 2011 rainfall event at Antonina and Morretes in Brazil. Photo courtesy of Renato Lima\/CENACID.<\/p><\/div>\n

.<\/p>\n

Landslides also occurred on smaller slopes close to houses, causing substantial levels of damage:<\/p>\n

\"A

A landslide close to houses, triggered by the March 2011 rainfall event at Antonina and Morretes in Brazil.\u00a0 Image courtesy of Erly Ricci.<\/p><\/div>\n

.<\/p>\n

In the lowland areas, the sediment released by the landslides caused extensive damage through inundation and deposition:<\/p>\n

\"Downstream

Downstream inundation and deposition damage caused by the March 2011 rainfall event at Antonina and Morretes in Brazil. Photo courtesy of Renato Lima\/CENACID.<\/p><\/div>\n

.<\/p>\n

Further details of this event can be found in a paper (Pican\u00e7o and <\/span><\/a>\u00a0Nunes 2013<\/a>).<\/span><\/p>\n

.<\/p>\n

Reference<\/h4>\n
Pican\u00e7o, J.L. and Nunes, L.H. 2013.\u00a0\u00a0A severe convective episode triggered by accumulated precipitation in the coast of Parana State, Brazil.\u00a0<\/a>7th European Conference on Severe Storms (ECSS2013), 3 – 7.<\/div>\n","protected":false},"excerpt":{"rendered":"

The March 2011 landslides in Antonina and Morretes, Brazil, which were triggered by unusually intense rainfall. <\/p>\n","protected":false},"author":22,"featured_media":37616,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[102,469,959,192,122],"class_list":["post-37611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-brazil","tag-featured","tag-landslide-report","tag-paper","tag-south-america"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/37611","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=37611"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/37611\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/37616"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=37611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=37611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=37611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}