{"id":598,"date":"2008-08-07T09:17:00","date_gmt":"2008-08-07T09:17:00","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/2008\/08\/07\/mount-adams-rock-and-snow-avalanche\/"},"modified":"2010-10-21T13:43:18","modified_gmt":"2010-10-21T17:43:18","slug":"mount-adams-rock-and-snow-avalanche","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2008\/08\/07\/mount-adams-rock-and-snow-avalanche\/","title":{"rendered":"Mount Adams rock and snow avalanche"},"content":{"rendered":"<p>The online site <a href=\"http:\/\/www.oregonlive.com\/environment\/index.ssf\/2008\/08\/major_avalanche_reshapes_mount.html\">Oregon Environmental News<\/a> has today carried a rather nice article on a new, large, rock and snow avalanche on Mount Adams (Fig. 1) in the Cascade Range in Washington State.  Mount Adams is a <span class=\"blsp-spelling-error\">stratovolcano<\/span> that has a long history of such events.  Many readers will be aware for example of the 31st August 1997 event, which had a volume of about 5 million cubic metres, and is well documented by the <span class=\"blsp-spelling-error\">USGS<\/span>.<\/p>\n<div style=\"text-align: center\"><a href=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2010\/10\/08_08-Mount-Adams-1.jpg\"><img decoding=\"async\" style=\"margin: 0px auto 10px;text-align: center;cursor: pointer\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2010\/10\/08_08-Mount-Adams-1.jpg\" alt=\"\" border=\"0\" \/><\/a><span style=\"font-size:85%\"><span style=\"font-family:arial\"><span style=\"font-weight: bold\">Figure 1: <\/span>Google Earth view of the southwest face of Mount Adams, upon which the most recent event occurred.<\/span><\/span><\/div>\n<p>This event was first picked up at about 14:50 UT on 1st August at the seismometers at the <a href=\"http:\/\/www.pnsn.org\/WEBICORDER\/VOLC\/ASR_SHZ_UW.2008080112.html\">Cascades Volcanic Observatory<\/a>, who have <span class=\"blsp-spelling-corrected\">kindly<\/span> put the seismic record online (Fig. 2).<\/p>\n<div style=\"text-align: center\"><a href=\"http:\/\/www.pnsn.org\/WEBICORDER\/VOLC\/ASR_SHZ_UW.2008080112.gif\"><img decoding=\"async\" style=\"margin: 0px auto 10px;text-align: center;cursor: pointer;width: 400px\" src=\"http:\/\/www.pnsn.org\/WEBICORDER\/VOLC\/ASR_SHZ_UW.2008080112.gif\" alt=\"\" border=\"0\" \/><\/a><span style=\"font-size:85%\"><span style=\"font-family:arial\"><span style=\"font-weight: bold\">Figure 2: <\/span>Seismic record from the <a href=\"http:\/\/www.pnsn.org\/WEBICORDER\/VOLC\/ASR_SHZ_UW.2008080112.html\">Cascades Volcanic Observatory<\/a> showing the 1st August 2008 rock and snow avalanche on Mt Adams (click on the image for a better view).<\/span><\/span><\/div>\n<p>The seismologists quickly recognised that this event was not volcanic in origin, but was in fact associated with a mass movement.  As a result, they contacted <span class=\"blsp-spelling-error\">a local<\/span> photographer, who went up there and confirmed that a rock and snow avalanches about 2 miles (3 km) has occurred.  H.C <span class=\"blsp-spelling-error\">Tupper<\/span> has been able to collect a photograph of the event (Fig. 3).<\/p>\n<div style=\"text-align: center\"><a href=\"http:\/\/blog.oregonlive.com\/environment_impact\/2008\/08\/HC%20Tupper%20photo%20Av%20Gl%20slide%20Aug.2-08.JPG\"><img decoding=\"async\" style=\"margin: 0px auto 10px;text-align: center;cursor: pointer;width: 400px\" src=\"http:\/\/blog.oregonlive.com\/environment_impact\/2008\/08\/HC%20Tupper%20photo%20Av%20Gl%20slide%20Aug.2-08.JPG\" alt=\"\" border=\"0\" \/><\/a><span style=\"font-size:85%\"><span style=\"font-family:arial\"><span style=\"font-weight: bold\">Figure 3: <\/span>H.C <span class=\"blsp-spelling-error\">Tupper&#8217;s&#8217;s<\/span> photograph, posted on <\/span><a href=\"http:\/\/www.oregonlive.com\/environment\/index.ssf\/2008\/08\/major_avalanche_reshapes_mount.html\">Oregon Environmental News<\/a><\/span><span style=\"font-size:85%\"><span style=\"font-family:arial\">, of the 1st August 2008 Mt Adams rock and snow avalanche.  Note the annotation is from the source and is thus not by me (click on the image for a better view).<\/span><\/span><\/div>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>The online site Oregon Environmental News has today carried a rather nice article on a new, large, rock and snow avalanche on Mount Adams (Fig. 1) in the Cascade Range in Washington State. Mount Adams is a stratovolcano that has a long history of such events. Many readers will be aware for example of the 31st August 1997 event, which had a volume of about 5 million cubic metres, and &hellip;<!-- AddThis Advanced Settings generic via filter on wp_trim_excerpt --><!-- AddThis Share Buttons generic via filter on wp_trim_excerpt --><\/p>\n","protected":false},"author":22,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[333,441,306,347,48],"class_list":["post-598","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-333","tag-cascades","tag-rock-avalanche","tag-seismic-data","tag-usa"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/598","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=598"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/598\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}