{"id":6449,"date":"2026-10-19T09:48:55","date_gmt":"2026-10-19T09:48:55","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-jardfraedi-sigurveig-arnadottir\/"},"modified":"2026-10-19T09:48:55","modified_gmt":"2026-10-19T09:48:55","slug":"doktorsvorn-i-jardfraedi-sigurveig-arnadottir","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-jardfraedi-sigurveig-arnadottir\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed jar\u00f0fr\u00e6\u00f0i &#8211; Sigurveig \u00c1rnad\u00f3ttir"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p><strong>Doktorsefni:<br \/><\/strong>Sigurveig \u00c1rnad\u00f3ttir<\/p>\n<p><strong>Heiti ritger\u00f0ar:<br \/><\/strong>\u00der\u00f3un hinnar fornu S\u00ed\u00f0-M\u00ed\u00f3sen Torfufellseldst\u00f6\u00f0var \u00e1 Mi\u00f0-Nor\u00f0urlandi: jar\u00f0fr\u00e6\u00f0i, jar\u00f0lagaskipan og segulstefnur hraunlaga, jar\u00f0efnafr\u00e6\u00f0i, aldur og jar\u00f0s\u00f6gulegt t\u00edmatal<\/p>\n<p><strong>Andm\u00e6lendur:<br \/><\/strong>Dr. Godfrey Fitton, pr\u00f3fessor vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3lans \u00ed Edinborg, Skotlandi<br \/>Dr. Richard Brown, d\u00f3sent vi\u00f0 Jar\u00f0v\u00edsindadeild Durham H\u00e1sk\u00f3la, Englandi<\/p>\n<p><strong>Lei\u00f0beinandi:<br \/><\/strong>Dr. \u00deorvaldur \u00de\u00f3r\u00f0arson, pr\u00f3fessor \u00ed eldfjallafr\u00e6\u00f0i og bergfr\u00e6\u00f0i vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd:<br \/><\/strong>Dr. \u00c1rni Hjartarson, jar\u00f0fr\u00e6\u00f0ingur hj\u00e1 \u00cdslenskum orkuranns\u00f3knum<br \/>Dr. Bjarni Gautason, jar\u00f0fr\u00e6\u00f0ingur og verkefnastj\u00f3ri hj\u00e1 \u00cdslenskum orkuranns\u00f3knum<strong><\/strong><\/p>\n<p><strong>Stj\u00f3rnandi varnar:<br \/><\/strong>Dr. Gu\u00f0finna Th A\u00f0algeirsd\u00f3ttir, pr\u00f3fessor vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>\u00c1grip:<br \/><\/strong>J\u00f6klar \u00edsaldar og vatnsf\u00f6ll hafa grafi\u00f0 sig inn \u00ed fj\u00f6lda megineldst\u00f6\u00f0va sem myndu\u00f0ust \u00e1 \u00cdslandi \u00e1 M\u00ed\u00f3sen og Pl\u00ed\u00f3sen og \u00fev\u00ed m\u00e1 n\u00fa me\u00f0 g\u00f3\u00f0u m\u00f3ti kanna innvi\u00f0i margra \u00feeirra og rannsaka um lei\u00f0 ger\u00f0 og \u00fer\u00f3un sl\u00edkra eldfjalla. Ritger\u00f0 \u00feessi fjallar um megineldst\u00f6\u00f0 innst \u00ed Eyjafir\u00f0i sem mynda\u00f0ist \u00e1 S\u00ed\u00f0-M\u00ed\u00f3sen og kennd er vi\u00f0 Torfufell. Markmi\u00f0 verkefnisins er a\u00f0 l\u00fdsa \u00fer\u00f3un Torfufellseldst\u00f6\u00f0varinnar og n\u00e1nasta umhverfis hennar me\u00f0 n\u00e1kv\u00e6mri jar\u00f0fr\u00e6\u00f0ikortlagningu, segulm\u00e6lingum, jar\u00f0efnafr\u00e6\u00f0i, l\u00fdsingum \u00e1 lykiljar\u00f0myndunum og sam\u00fe\u00e6ttingu vi\u00f0 b\u00e6\u00f0i gamlar og n\u00fdjar aldurs\u00e1kvar\u00f0anir. \u00deessar athuganir benda til a\u00f0 megineldst\u00f6\u00f0in hafi byrja\u00f0 a\u00f0 hla\u00f0ast upp fyrir 7,8-8,0 millj\u00f3n \u00e1rum og a\u00f0 fyrri stig upphle\u00f0slunnar hafi einkennst af bas\u00edskum apalhraunum en seinni stig af fj\u00f6lbreyttari bergtegundum, a\u00f0 me\u00f0t\u00f6ldum \u00eds\u00farum og s\u00farum (\u00fe.e. k\u00edsilr\u00edkum) myndunum. \u00cd nokkrum opnum s\u00e9st a\u00f0 \u00feessar tv\u00e6r lotur eru a\u00f0skildar af s\u00e9rst\u00e6\u00f0u setlagi sem inniheldur gj\u00f3sku, smekt\u00edtleir og steingervinga, \u00fe.e. vi\u00f0arstein. R\u00fd\u00f3l\u00edtvirkni &#8211; sem h\u00f3fst \u00ed eldst\u00f6\u00f0inni fyrir u.\u00fe.b. 7,12 millj\u00f3n \u00e1rum og st\u00f3\u00f0 yfir \u00ed um 400.000 \u00e1r &#8211; einkenndist b\u00e6\u00f0i af innskotum og sprengi- og hraungosum og mynda\u00f0i margbrotna heild \u00e1 mi\u00f0sv\u00e6\u00f0i eldvirkninnar.<\/p>\n<p>\u00deessi virkni \u00ed Torfufellseldst\u00f6\u00f0inni h\u00f3fst \u00e1 \u00fe\u00fd\u00f0ingarmikilli stund \u00ed jar\u00f0s\u00f6gu landsins, \u00fe.e.a.s. \u00e1 sama t\u00edma og rekbeltaflutningur var a\u00f0 eiga s\u00e9r sta\u00f0, og g\u00e6ti marka\u00f0 upphaf rekbeltisins sem n\u00fa er virkt \u00e1 Nor\u00f0urlandi. Torfufellseldst\u00f6\u00f0in var ekki \u00ed h\u00f3pi hinna st\u00f3ru megineldst\u00f6\u00f0va m\u00ed\u00f3sent\u00edmans. Kortlagningin bendir \u00fe\u00f3 til a\u00f0 h\u00fan hafi risi\u00f0 nokkur hundru\u00f0 metra yfir umhverfi sitt. Eldvirknin h\u00e9lt \u00e1fram \u00fear \u00ed grennd og sm\u00e1tt og sm\u00e1tt gr\u00f3fst h\u00fan \u00ed yngri jar\u00f0myndanir og ummerki hennar hurfu af yfirbor\u00f0i jar\u00f0ar. L\u00f6ngu s\u00ed\u00f0ar gr\u00f3fu ve\u00f0runar\u00f6flin, einkum j\u00f6klar \u00edsaldar, hana upp \u00e1 n\u00fd og afhj\u00fapu\u00f0u innvi\u00f0i hennar.<\/p>\n<p><strong>Um doktorsefni\u00f0:<br \/><\/strong><\/p>\n<p>Sigurveig \u00c1rnad\u00f3ttir er f\u00e6dd \u00e1ri\u00f0 1978 \u00ed Gautaborg \u00ed Sv\u00ed\u00fej\u00f3\u00f0. H\u00fan \u00fatskrifa\u00f0ist af n\u00e1tt\u00farufr\u00e6\u00f0ibraut Menntask\u00f3lans \u00e1 Akureyri \u00e1ri\u00f0 1998, stunda\u00f0i forn\u00e1m vi\u00f0 Listah\u00e1sk\u00f3la \u00cdslands veturinn 1999-2000 og lauk BA pr\u00f3fi \u00ed myndlist fr\u00e1 sama sk\u00f3la \u00e1ri\u00f0 2003. Sigurveig lauk BS og MS pr\u00f3fum \u00ed jar\u00f0fr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3la \u00cdslands 2006 og 2008 og f\u00e9kk kennslur\u00e9ttindi fr\u00e1 H\u00e1sk\u00f3lanum \u00e1 Akureyri 2011. A\u00f0 loknu BS pr\u00f3fi \u00ed jar\u00f0fr\u00e6\u00f0i h\u00f3f h\u00fan st\u00f6rf sem s\u00e9rfr\u00e6\u00f0ingur \u00e1 Veg- og jar\u00f0t\u00e6knideild Ranns\u00f3knastofnunar byggingari\u00f0na\u00f0arins, \u00fear sem h\u00fan starfa\u00f0i fyrst og fremst vi\u00f0 ranns\u00f3knir og pr\u00f3fanir \u00e1 steinefnum til notkunar \u00ed mannvirki auk \u00feess a\u00f0 vinna a\u00f0 meistaraverkefni s\u00ednu. Sigurveig h\u00f3f st\u00f6rf sem jar\u00f0fr\u00e6\u00f0ingur hj\u00e1 \u00cdslenskum orkuranns\u00f3knum (\u00cdSOR) \u00e1 Akureyri \u00e1ri\u00f0 2008 og starfa\u00f0i \u00fear \u00feanga\u00f0 til \u00ed lok mars \u00e1 \u00feessu \u00e1ri. Hennar helstu verkefni \u00e1 \u00cdSOR sneru a\u00f0 borholujar\u00f0fr\u00e6\u00f0i, jar\u00f0fr\u00e6\u00f0ikortlagningu og verkefnastj\u00f3rnun. Doktorsverkefni\u00f0 vann h\u00fan a\u00f0 samhli\u00f0a starfi s\u00ednu \u00e1 \u00cdSOR. Sigurveig b\u00fdr \u00e1 Akureyri me\u00f0 b\u00f6rnum s\u00ednum tveimur. H\u00fan sinnir n\u00fa starfi verkefnastj\u00f3ra ranns\u00f3kna og vi\u00f0halds hj\u00e1 Nor\u00f0urorku og hefur starfa\u00f0 \u00fear s\u00ed\u00f0an \u00ed apr\u00edl \u00e1 \u00feessu \u00e1ri.<\/p>\n<p>\u00a0<\/p>\n<\/div><\/div>","protected":false},"featured_media":5838,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2024-12-11T13:00:00+00:00","_phd_date_end":"2024-12-11T15:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0arsalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"\u00der\u00f3un hinnar fornu S\u00ed\u00f0-M\u00ed\u00f3sen Torfufellseldst\u00f6\u00f0var \u00e1 Mi\u00f0-Nor\u00f0urlandi: jar\u00f0fr\u00e6\u00f0i, jar\u00f0lagaskipan og segulstefnur hraunlaga, jar\u00f0efnafr\u00e6\u00f0i, aldur og jar\u00f0s\u00f6gulegt t\u00edmatal","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_jardfraedi_sigurveig_arnadottir","_phd_source_node_id":"437409","_phd_source_type":"vidburdir","_phd_member_id":990,"footnotes":""},"phd_school":[113,93],"phd_discipline":[115],"class_list":["post-6449","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-jardvisindadeild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-jardfraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence"}],"about":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/types\/phd_defence"}],"version-history":[{"count":0,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6449\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/5838"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6449"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6449"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}