{"id":1361,"date":"2020-05-28T15:45:55","date_gmt":"2020-05-28T15:45:55","guid":{"rendered":"https:\/\/uni.hi.is\/tobi\/?page_id=1361"},"modified":"2020-05-28T15:50:19","modified_gmt":"2020-05-28T15:50:19","slug":"maxi-plume-objectives","status":"publish","type":"page","link":"https:\/\/uni.hi.is\/tobi\/maxi-plume-objectives\/","title":{"rendered":"MAXI-Plume Objectives"},"content":{"rendered":"<h1>Objectives and work packages of MAXI-Plume<\/h1>\n<ul>\n<li><strong><u>Objective 1:<\/u><\/strong> Providing \u201c<strong>ground truth<\/strong>\u201d data sets as empirical base of unprecedented precision to both test and improve the accuracy of existing mass flux models. For this purpose time-dependent plume heights <em>H<\/em>(<em>t<\/em>) and total erupted mass data <em>M<\/em>(<em>t<\/em>) for the opening explosive phases of Hekla 1991 and 2000, for Gr\u00edmsv\u00f6tn 2004, Eyjafjallaj\u00f6kull 2010, and Gr\u00edmsv\u00f6tn 2011 are collected, complemented, verified and corrected.<br \/>\n-<\/li>\n<li><strong><u>Objective 2:<\/u><\/strong> Studying the <strong>wind effects<\/strong> on evolution dynamics and height of ash plumes using meteorological data for the five case studies, combined with those of ash pulse experiments. This includes constraining the air entrainment rates and their dependencies on wind speeds in order to develop an improved mass flux prediction applicable under realistic future scenarios in Iceland.<br \/>\n-<\/li>\n<li><strong><u>Objective 3:<\/u><\/strong> Studying the <strong>role of pulsating behavior<\/strong> by apply a recently developed pulse model for Eyjafjallaj\u00f6kull 2010 [1] to specific historic eruptions\u00a0 to better understand the role of pulsating behavior. Using the observed unsteady source conditions to test both steady and unsteady 1D plume models.<br \/>\n-<\/li>\n<li><strong><u>Objective 4:<\/u><\/strong> Apply the knowledge obtained to enhance and optimize the monitoring software REFIR [2]. During an ongoing eruption it is the aim to provide the volcanological community and other stakeholders with <strong>refined mass flux estimates<\/strong> in near-real time, according to continuously updated field data.<\/li>\n<\/ul>\n<p><div id=\"attachment_1383\" style=\"width: 484px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/REFIR_screen.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1383\" class=\"wp-image-1383 size-large\" src=\"https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/REFIR_screen-1024x619.jpg\" alt=\"\" width=\"474\" height=\"287\" srcset=\"https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/REFIR_screen-1024x619.jpg 1024w, https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/REFIR_screen-300x181.jpg 300w, https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/REFIR_screen-768x464.jpg 768w, https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/REFIR_screen-1536x929.jpg 1536w, https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/REFIR_screen.jpg 1856w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><\/a><p id=\"caption-attachment-1383\" class=\"wp-caption-text\">Screenshot of monitoring system REFIR taken during an eruption exercise. The depicted case shows a simulated eruption of Eyjafjallaj\u00f6kull [2].<\/p><\/div>The MAXI-Plume project is divided into four work packages (WPs), following the numbering of the four key objectives.<\/p>\n<p>A fifth WP (\u201cX\u201d) will be implemented - to make full use of the opportunity - if an explosive eruption occurs during the duration of this project.<\/p>\n<p><a href=\"https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/PERT.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-1363\" src=\"https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/PERT-1024x593.jpg\" alt=\"\" width=\"474\" height=\"274\" srcset=\"https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/PERT-1024x593.jpg 1024w, https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/PERT-300x174.jpg 300w, https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/PERT-768x445.jpg 768w, https:\/\/uni.hi.is\/tobi\/files\/2020\/05\/PERT.jpg 1238w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><\/a><\/p>\n<h2>References and annotations:<\/h2>\n<p>[1]: <a href=\"http:\/\/www.earth-planets-space.com\/content\/67\/1\/180\">D\u00fcrig, T. et al: Mass eruption rates in pulsating eruptions estimated from video analysis of the gas thrust\u2013buoyancy transition \u2013 a case study of the 2010 eruption of Eyjafjallaj\u00f6kull, Iceland. Earth Planets Space 67(1), 180 (2015).<\/a><\/p>\n<p>[2]: <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0377027318301501\">D\u00fcrig, T. et al.: REFIR- A multi-parameter system for near real-time estimates of plume-height and mass eruption rate during explosive eruptions. J. Volcanol. Geotherm. Res., 360, 61-83 (2018).<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Objectives and work packages of MAXI-Plume Objective 1: Providing \u201cground truth\u201d data sets as empirical base of unprecedented precision to both test and improve the accuracy of existing mass flux models. For this purpose time-dependent plume heights H(t) and total &hellip; <a href=\"https:\/\/uni.hi.is\/tobi\/maxi-plume-objectives\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1272,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1361","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/pages\/1361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/users\/1272"}],"replies":[{"embeddable":true,"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/comments?post=1361"}],"version-history":[{"count":7,"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/pages\/1361\/revisions"}],"predecessor-version":[{"id":1384,"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/pages\/1361\/revisions\/1384"}],"wp:attachment":[{"href":"https:\/\/uni.hi.is\/tobi\/wp-json\/wp\/v2\/media?parent=1361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}