{"id":5604,"date":"2021-04-22T14:38:25","date_gmt":"2021-04-22T17:38:25","guid":{"rendered":"https:\/\/nis.gl\/?post_type=projekt&p=5604"},"modified":"2021-05-03T10:32:59","modified_gmt":"2021-05-03T13:32:59","slug":"siku-aajuitsoq","status":"publish","type":"projekt","link":"https:\/\/nis.gl\/da\/projekt\/siku-aajuitsoq\/","title":{"rendered":"Siku Aajuitsoq"},"content":{"rendered":"

Postdoc:<\/strong>
\nMarco Marcer, Arctic DTU – Ilinniarfeqarfik Sisimiut<\/p>\n

Projektbeskrivelse:<\/strong>
\nHensigten med Siku Aajuitsoq er at opbygge viden omkring permafrost i fjeldomr\u00e5der p\u00e5 regionalt plan i Gr\u00f8nland. Permafrosten har stor betydning for stabiliteten af fjeldskr\u00e5ninger og l\u00f8se aflejringer. Jord- og fjeldtemperaturer under frysepunktet for\u00e5rsager isdannelser stabiliserer spr\u00e6kker, sedimenter og l\u00f8st materiale, hvorved styrken af undergrunden \u00f8ges. Set i lyset af klimaforandringer, vil stigende temperaturer og en reduktion i permafrostens udbreddelse for\u00e5rsage smeltning af isen i fjeldspr\u00e6kker og l\u00f8se aflejringer, hvilket kan for\u00e5rsage destabilisering af fjeldsider og udg\u00f8re ne risiko for infrastruktur. I de fleste urbaniserede bjergomr\u00e5der verden over, bliver en vurdering af udbredelsen af fjeldpermafrost inkluderet i risikovurderinger, hvilket hj\u00e6lper til at forst\u00e5 de processer som leder til destabilisering, og forebygge afledte skader p\u00e5 byggeri og infrastruktur. Dette aspekt af risikovurdering implementeres dog typisk ikke i Gr\u00f8nland, ogs\u00e5 selvom fjelde og fjeldsk\u00e5ninger er vigtige elementer i bybilledet i mange byer og bygder, og tidligere har v\u00e6ret skyld i naturkatastrofer. Der er en akut mangel p\u00e5 in-situ data, og eksisterende regionale permafrostmodeller har en grov opl\u00f8sning, der er ude af stand til p\u00e5 fornuftig vis at repr\u00e6sentere den store rumlige variation i stejlt terr\u00e6n, hvilket netop karakteriserer gr\u00f8nlandske fjelde. Som et resultat heraf overvejes permafrost sj\u00e6ldent af interessenter i deres risikovurderinger. For at afhj\u00e6lpe dette problem, lancerede Arctic DTU i 2020 projektet TEMPRA (TEMPerature monitioring of Rockwalls in the Arctic), et indledende studie i Sisimiut med fokus p\u00e5 at udvikle en generel procedure for kortl\u00e6gning af permafrost med anvendelighed overalt i Gr\u00f8nland. Med n\u00e6rv\u00e6rende projekt Siku Aajuitsoq, vil vi p\u00e5 basis af erfaringerne fra TEMPRA etablere et regionalt moniteringsnetv\u00e6rk for permafrost i fjeldskr\u00e5ninger i SisimiutKangerlussuaq omr\u00e5det og etablere en statistisk model for permafrostens regionale udbredelse og sensitivitet. Qeqqata Kommunia forventer i de kommende \u00e5r en stor v\u00e6kst i trafik og infrastrukturudbygning i omr\u00e5det takket v\u00e6re anl\u00e6ggelsen af den f\u00f8rste regionale vejforbindelse i Gr\u00f8nland. Denne forventes at tiltr\u00e6kke mere turisme bla. pga af den \u00f8gede tilg\u00e6ngelighed til UNESCOs verdensarvsomr\u00e5det Aasivissuit-Nipisat. Viden om Permafrost er afg\u00f8rende for en sikker udbygning af infrastruktur i omr\u00e5det og den generelle f\u00e6rdsel, samt for indsatsen med bevarelse af kulturarven i verdensarvsomr\u00e5det. Transektet fra Sisimiut til Kangerlussuaq omfatter en klimatisk fra kyst- til fastlandsklima, samt en bred variation i topografiske forhold sp\u00e6ndende fra egentlige alpine omr\u00e5der til bl\u00f8de bakker. Den store variation som d\u00e6kkes af projektets monitering betyder at modelapparatet vil kunne danne grundlag for opskalering til en st\u00f8rre del af den Gr\u00f8nlandske vestkyst.<\/p>\n

Bevilget:<\/strong> 1.541.553,00 kr.<\/p>\n","protected":false},"excerpt":{"rendered":"

Postdoc: Marco Marcer, Arctic DTU – Ilinniarfeqarfik Sisimiut Projektbeskrivelse: Hensigten med Siku Aajuitsoq er at opbygge viden omkring permafrost i fjeldomr\u00e5der p\u00e5 regionalt plan i Gr\u00f8nland. Permafrosten har stor betydning for stabiliteten af fjeldskr\u00e5ninger og l\u00f8se aflejringer. Jord- og fjeldtemperaturer under frysepunktet for\u00e5rsager isdannelser stabiliserer spr\u00e6kker, sedimenter og l\u00f8st materiale, hvorved styrken af undergrunden \u00f8ges. 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