{"id":28474,"date":"2018-08-29T07:32:24","date_gmt":"2018-08-29T07:32:24","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=28474"},"modified":"2018-08-29T07:32:24","modified_gmt":"2018-08-29T07:32:24","slug":"molise-earthquake-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2018\/08\/29\/molise-earthquake-1\/","title":{"rendered":"Landslides from the 16 August 2018 Mw=5.1 Molise earthquake in southern Italy"},"content":{"rendered":"

Landslides from the 16 August 2018 Mw=5.1 Molise earthquake in southern Italy<\/h4>\n

Text and photographs supplied by Salvatore Martino<\/a>, <\/em>University of Roma “Sapienza”<\/em><\/a><\/h5>\n

On 16 August 2018, a Mw=5.1 earthquake occurred 4 km SE of the Montecilfone village (Molise, Southern Italy); by 20 August about 200 aftershocks, of which nine with a magnitude of Mw=3 or greater associated with the Molise earthquake<\/a>, (Fig.1) had been recorded by the Italian National Accelerometric Network (RAN), supported by some temporary stations installed by the Italian National Institute of Geophysics and Volcanology (INGV).<\/p>\n

\"Molise

Figure 1:<\/strong> Aftershock distribution for the Mw=5.1 Molise earthquake in Italy. Map via INGV Terremoti.<\/a><\/p><\/div>\n

 <\/p>\n

The epicentral area corresponds to the hill-slope landscape between the Biferno and Trigno Rivers.\u00a0 According to the official geological map of Italy<\/a>, in the epicentral area outcrops a complex sedimentary succession of terrigenous deposits including scaly clays ascribable to the Argille Varicolori Formation of the Paleocene, arenaceous-pelitic flysch of the Miocene-Pliocene and silty-clays of the Pliocene (Fig.2).<\/p>\n

\"Molise

Figure 2:<\/strong> Geology map<\/a> of the area affected by the Mw=5.1 Molise earthquake in Italy.<\/p><\/div>\n

During the days before the mainshock occurrence, intense rainfall occurred in the epicentral area, increasing the susceptibility to earthquake-induced landslides. Immediately after the earthquake the CERI \u201cSapienza\u201d research center in co-operation with the local geological office Geoservizi S.r.l. carried on field surveys to create an inventory of the earthquake-induced ground effects as soon as possible, to avoid possible deletion of the ground evidence due to new rainfall and the action of local farmers.<\/p>\n

No earthquake-induced effects had been previously documented\u00a0 in this area (between Guglionesi, Larino and Montenero di Bisaccia villages) according to the available catalogues (Figs 3 and 4). Therefore, this is the first time that in this sector of the Central Apennine it is possible to inventory earthquake-induced effects and to analyze their spatial distribution.<\/p>\n

\"Molise

Figure 3:<\/strong> Previously documented earthquake-induced ground failures in the area of the Mw=5.1 Molise earthquake in Italy.<\/p><\/div>\n

.<\/p>\n

\"Molise

Figure 4:<\/strong> Landslides triggered by the Mw=5.1 Molise earthqauke in Italy.<\/p><\/div>\n

.<\/p>\n

Until now some tens of earthquake-induced landslides have been identified, which are concentrated in a radius of almost 2 km from the epicenter. These landslides mainly consist in re-activations of earth slides (Fig.5); for several of them, local people testified that the movement occurred following the mainshock. The landslide reactivation caused, in some case, not negligible damage to roads and infrastructures (Figs 6, 7 and 8).<\/p>\n

\"Molise

Figure 5:<\/strong> The landscape of the area affected by the Mw=5.1 Molise earthquake in Italy<\/p><\/div>\n

.<\/p>\n

\"Molise

Figure 6:<\/strong> a slope failure induced by the Mw=5.1 Molise earthquake in Italy.<\/p><\/div>\n

.<\/p>\n

\"Molise

Figure 7:<\/strong> a slope failure induced by the Mw=5.1 Molise earthquake in Italy.<\/p><\/div>\n

.<\/p>\n

\"Molise

Figure 8:<\/strong> a slope failure induced by the Mw=5.1 Molise earthquake in Italy.<\/p><\/div>\n

.<\/p>\n

The inventory of the ground effects will be included in the on-line CEDIT catalogue managed by the CERI \u201cSapienza\u201d<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Salvatore Martino has kindly provided information about landslides triggered by the 16 August 2018 Mw=5.1 Molise earthquake in southern Italy<\/p>\n","protected":false},"author":22,"featured_media":28483,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[537],"tags":[16802,23,144,469,16806,36],"class_list":["post-28474","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earthquake-induced-landslide","tag-coseismic-landslide","tag-earthquake","tag-europe","tag-featured","tag-inventory","tag-italy"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/28474","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=28474"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/28474\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/28483"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=28474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=28474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=28474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}