{"id":145,"date":"2019-12-06T13:13:10","date_gmt":"2019-12-06T12:13:10","guid":{"rendered":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/?page_id=145"},"modified":"2023-11-10T15:23:08","modified_gmt":"2023-11-10T14:23:08","slug":"eager-2011-togtet","status":"publish","type":"page","link":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/ekspeditioner-og-feltarbejde\/eager-2011-togtet\/","title":{"rendered":"EAGER 2011"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_full-15d750bd1b332b34c6e70b077ebbccdf\">\n.flex_column.av-av_one_full-15d750bd1b332b34c6e70b077ebbccdf{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class='flex_column av-av_one_full-15d750bd1b332b34c6e70b077ebbccdf av_one_full  avia-builder-el-0  el_before_av_two_third  avia-builder-el-first  first flex_column_div av-zero-column-padding '     ><section  class='av_textblock_section av-av_textblock-2de302bf1aa3cf4c9157dbe6f50ac7eb'  itemscope=\"itemscope\" itemtype=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h1>EAGER 2011 togtet med den svenske isbryder Oden<\/h1>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_two_third-15d750bd1b332b34c6e70b077ebbccdf\">\n.flex_column.av-av_two_third-15d750bd1b332b34c6e70b077ebbccdf{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class='flex_column av-av_two_third-15d750bd1b332b34c6e70b077ebbccdf av_two_third  avia-builder-el-2  el_after_av_one_full  el_before_av_one_third  first flex_column_div av-zero-column-padding column-top-margin'     ><section  class='av_textblock_section av-av_textblock-2de302bf1aa3cf4c9157dbe6f50ac7eb'  itemscope=\"itemscope\" itemtype=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>EAGER 2011 togtet (East Greenland Ridge) med den svenske isbryder Oden blev planlagt for at indsamle forskellige typer data (multibeam bathymetriske (vanddybde), subbottomprofiler, seismiske refleksions- og refraktionsdata og gravimetriske data) i omr\u00e5det ud for Nord\u00f8stgr\u00f8nland i forbindelse med Kontinentalsokkelprojektet. Togtet blev organiseret i samarbejde med det svenske <a href=\"https:\/\/round-lake.dustinice.workers.dev:443\/http\/www.polar.se\/\" target=\"_blank\" rel=\"noopener\">Polarforskningssekretariat<\/a>.<\/p>\n<p>EAGER 2011 togtet startede i Longyearbyen p\u00e5 Svalbard den 17. August og sluttede sammesteds den 9. september.<\/p>\n<h2>Projektbeskrivelse<\/h2>\n<p>Indsamlingen af havbundsdybdedata fokuserede p\u00e5 en kortl\u00e6gning af \u00d8stgr\u00f8nlands Ryggen og kontinentalskr\u00e5ningen af den nord\u00f8stgr\u00f8nlandske shelf syd for denne ryg.<\/p>\n<p>Multibeam ekkoloddet k\u00f8rte kontinuert under hele togtet for at skaffe et godt grundlag for at kunne studere havbundens morfologi og de processer der har dannet havbunden. <em>Oden<\/em> er udstyret med et skrogmonteret Kongsberg EM 122 multibeam (flerstr\u00e5le) ekkolod som opererer ved en frekvens af 12 kHz og indsamler data i et omr\u00e5de under skibet med en bredde, der svarer til cirka fem gange vanddybden. Derudover blev der kontinuert indsamlet data med <em>Oden<\/em>\u2019s 2-8 kHz chirp sonar system SBP 120 for at kunne karakterisere de \u00f8verste 50 til 200 meter af sedimenterne under havbunden.<\/p>\n<p>Den seismiske dataindsamling havde til form\u00e5l at unders\u00f8ge, hvorledes \u00d8stgr\u00f8nlands Ryggen er forbundet med den Nord\u00f8stgr\u00f8nlandske shelf. De refraktionsseismiske unders\u00f8gelser, der unders\u00f8ger den dybere struktur af jordskorpen, brugte b\u00e5de havbunds seismometer (ocean bottom seismometer, OBS \u2013 seismiske b\u00f8jer, der bliver sat p\u00e5 havbunden mens m\u00e5lingerne foreg\u00e5r) og sonobuoys , der driver i overfladen. Refleksionsseismiske data blev indsamlet med et relativt kort (200 m) lyttekabel (streamer).<\/p>\n<p>De seismiske linjer havde en samlet l\u00e6ngde p\u00e5 ca. 420 km.<\/p>\n<p>Den seismiske kilde bestod af fire G-gun\u2019s (luftkanoner), hver med et volumen p\u00e5 520 cubic inch (8.5 liter) og dermed et samlet volumen p\u00e5 2080 cubic inch (34 liter). De fire luftkanoner blev samlet to og to og oph\u00e6ngt i en ramme, som blev trukket bagved skibet i en dybde af 9 meter. Under de refraktionsseismiske unders\u00f8gelser blev de fire luftkanoner affyret hvert minut med et tryk p\u00e5 3000 PSI svarende til 200 bar, mens kun to luftkanoner blev brugt under de refleksionsseismiske m\u00e5linger dog med et interval p\u00e5 12 sekunder.<\/p>\n<p>Indsamling af oceanografiske data blev gennemf\u00f8rt l\u00f8bende herunder CTD casts og indsamling af vandpr\u00f8ver. Dataene blev blandt andet brugt til at korrigere multibeam data. Gravimetriske data blev ogs\u00e5 indsamlet kontinuerligt under togtet. Endeligt var et biokemisk og ornitologisk projekt tilknyttet togtet.<\/p>\n<p><a href=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/polarforskningsportalen.se\/arktis\/expeditioner\/eager\" target=\"_blank\" rel=\"noopener\">Korte feltrapporter fra EAGER 2011 togtet<\/a> kan findes p\u00e5 det Svenske Polarforskningssekretariats hjemmeside.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-c8fc129dc35fd1ae2a1e410224d39ea8\">\n.flex_column.av-av_one_third-c8fc129dc35fd1ae2a1e410224d39ea8{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class='flex_column av-av_one_third-c8fc129dc35fd1ae2a1e410224d39ea8 av_one_third  avia-builder-el-4  el_after_av_two_third  avia-builder-el-last  flex_column_div av-zero-column-padding column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lospjq9n-cbe4b233e74080c04c1bae2d1a0e5b72\">\n.avia-image-container.av-lospjq9n-cbe4b233e74080c04c1bae2d1a0e5b72 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-lospjq9n-cbe4b233e74080c04c1bae2d1a0e5b72 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-lospjq9n-cbe4b233e74080c04c1bae2d1a0e5b72 av-styling- av-hover-grow avia-align-center  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><a href=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-content\/uploads\/2023\/11\/map_24_8-2011_500.jpg\" class='avia_image' ><img decoding=\"async\" class='wp-image-1833 avia-img-lazy-loading-not-1833 avia_image ' src=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-content\/uploads\/2023\/11\/map_24_8-2011_500.jpg\" alt='Kort viser Fram Str\u00e6det og Gr\u00f8nlandshavet. Arbejdsomr\u00e5det for EAGER 2011 togtet er vist med en r\u00f8d ellipse.' title='map_24_8-2011_500'  height=\"387\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-content\/uploads\/2023\/11\/map_24_8-2011_500.jpg 500w, https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-content\/uploads\/2023\/11\/map_24_8-2011_500-300x232.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-2de302bf1aa3cf4c9157dbe6f50ac7eb'  itemscope=\"itemscope\" itemtype=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Kort viser Fram Str\u00e6det og Gr\u00f8nlandshavet. Arbejdsomr\u00e5det for EAGER 2011 togtet er vist med en r\u00f8d ellipse.<\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-av_textblock-2de302bf1aa3cf4c9157dbe6f50ac7eb'  itemscope=\"itemscope\" itemtype=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Downoad <a href=\"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-content\/uploads\/Dokumenter\/EAGER_2011_Cruise_Report_web.pdf\" target=\"_blank\" rel=\"noopener\">Cruise Report for EAGER 2011<\/a><\/strong><\/p>\n<\/div><\/section><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":159,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-145","page","type-page","status-publish","hentry"],"aioseo_notices":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/pages\/145"}],"collection":[{"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/comments?post=145"}],"version-history":[{"count":13,"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/pages\/145\/revisions"}],"predecessor-version":[{"id":1834,"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/pages\/145\/revisions\/1834"}],"up":[{"embeddable":true,"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/pages\/159"}],"wp:attachment":[{"href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/a76.dk\/wp-json\/wp\/v2\/media?parent=145"}],"curies":[{"name":"wp","href":"https:\/\/round-lake.dustinice.workers.dev:443\/https\/api.w.org\/{rel}","templated":true}]}}