{"id":6133,"date":"2026-10-19T09:48:32","date_gmt":"2026-10-19T09:48:32","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsfyrirlestur-i-jardfraedi-thorbjorg-sigfusdottir\/"},"modified":"2026-10-19T09:48:32","modified_gmt":"2026-10-19T09:48:32","slug":"doktorsfyrirlestur-i-jardfraedi-thorbjorg-sigfusdottir","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsfyrirlestur-i-jardfraedi-thorbjorg-sigfusdottir\/","title":{"rendered":"Doktorsfyrirlestur \u00ed jar\u00f0fr\u00e6\u00f0i &#8211; \u00deorbj\u00f6rg Sigf\u00fasd\u00f3ttir"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p><strong>Doktorsefni:<\/strong>\u00a0\u00deorbj\u00f6rg Sigf\u00fasd\u00f3ttir<\/p>\n<p><strong>Heiti ritger\u00f0ar:<\/strong>\u00a0J\u00f6klunarsaga ne\u00f0ri hluta Borgarfjar\u00f0ar: greining \u00e1 j\u00f6kulh\u00f6ggu\u00f0um setl\u00f6gum og landformum (Past dynamics of a marine-terminating glacier in lower Borgarfj\u00f6r\u00f0ur, west Iceland: analyses of glaciotectonic sediments and landforms)<\/p>\n<p><strong>Lei\u00f0beinandi:<\/strong>\u00a0Dr. \u00cdvar \u00d6rn Benediktsson, s\u00e9rfr\u00e6\u00f0ingur vi\u00f0 Jar\u00f0v\u00edsindastofnun H\u00e1sk\u00f3lans og a\u00f0j\u00fankt vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd:<\/strong> Dr. \u00d3lafur Ing\u00f3lfsson, pr\u00f3fessor vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<br \/> Dr. Hreggvi\u00f0ur Nor\u00f0dahl, s\u00e9rfr\u00e6\u00f0ingur vi\u00f0 Jar\u00f0v\u00edsindastofnun H\u00e1sk\u00f3lans <br \/> Dr. Emrys R. Phillips,\u00a0 v\u00edsindama\u00f0ur vi\u00f0 British Geological Survey \u00ed Edinborg, Skotlandi<br \/> Dr. Per M\u00f6ller, pr\u00f3fessor vi\u00f0 Jar\u00f0fr\u00e6\u00f0ideild H\u00e1sk\u00f3lans \u00ed Lundi, Sv\u00ed\u00fej\u00f3\u00f0<\/p>\n<p><strong>Ath\u00f6fn st\u00fdrir:\u00a0<\/strong>\u00a0Dr. Magn\u00fas Tumi Gu\u00f0mundsson, pr\u00f3fessor og deildarforseti Jar\u00f0v\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands.<\/p>\n<p>Um er a\u00f0 r\u00e6\u00f0a sameiginlega doktorsgr\u00e1\u00f0u milli H\u00e1sk\u00f3lans \u00ed Lundi og H\u00e1sk\u00f3la \u00cdslands f\u00f3r v\u00f6rnin fram \u00ed Sv\u00ed\u00fej\u00f3\u00f0 11. okt\u00f3ber s\u00ed\u00f0astli\u00f0inn.<\/p>\n<p><strong>\u00c1grip<\/strong><\/p>\n<p>Vi\u00f0 lok s\u00ed\u00f0asta j\u00f6kulskei\u00f0s gekk j\u00f6kull \u00ed sj\u00f3 fram \u00ed Melasveit \u00ed ne\u00f0ri hluta Borgarfjar\u00f0ar. Vegna landriss \u00ed kj\u00f6lfar afj\u00f6klunar er sv\u00e6\u00f0i\u00f0 n\u00fa ofan sj\u00e1varm\u00e1ls. M\u00e1 \u00fear v\u00ed\u00f0a sj\u00e1 j\u00f6kulr\u00e6n setl\u00f6g og landform sem veita inns\u00fdn \u00ed j\u00f6klunars\u00f6gu sv\u00e6\u00f0isins og ferli setmyndunar og afmyndunar vi\u00f0 ja\u00f0ar j\u00f6kla \u00ed sj\u00e1varumhverfi. Ranns\u00f3kn \u00feessi beindist a\u00f0 j\u00f6kulh\u00f6ggun og setger\u00f0 \u00ed Melab\u00f6kkum, \u00c1sb\u00f6kkum og Belgsholti. Setger\u00f0, setlagaskipan og byggingareinkenni voru kortl\u00f6g\u00f0 \u00e1 vettvangi og bakkarnir m\u00e6ldir me\u00f0 leysisk\u00edki. Einnig var sets\u00fdnum safna\u00f0 til sm\u00e1sj\u00e1rsko\u00f0ana og skeljum til aldursgreininga. \u00cd b\u00f6kkunum m\u00e1 finna a.m.k. sj\u00f6 st\u00f3ra j\u00f6kulgar\u00f0a, sem grafnir eru undir yngri sj\u00e1varsetl\u00f6gum. Gar\u00f0arnir eru a\u00f0 mestu \u00far sj\u00e1varseti, sem j\u00f6kull \u00far Borgarfir\u00f0i \u00fer\u00fdsti upp vi\u00f0 j\u00f6kulspor\u00f0inn. Aukinn vatns\u00fer\u00fdstingur undir og framan vi\u00f0 spor\u00f0inn \u00fdtti undir afmyndun undirlagsins og au\u00f0velda\u00f0i j\u00f6klinum a\u00f0 byggja upp gar\u00f0ana. Sy\u00f0sti og st\u00e6rsti gar\u00f0urinn markar h\u00e1marks\u00fatbrei\u00f0slu j\u00f6kulsins. Aldursgreiningar s\u00fdna a\u00f0 hann mynda\u00f0ist \u00e1 Yngra Dr\u00edas (fyrir u.\u00fe.b 13-11,7 \u00fe\u00fas. \u00e1rum). Hinir gar\u00f0arnir ver\u00f0a almennt yngri til nor\u00f0urs og eru til marks um sm\u00e6rri framr\u00e1sir \u00e1 t\u00edmabili h\u00f6rfunar j\u00f6kulsins inn Borgarfj\u00f6r\u00f0 . Yngsti gar\u00f0urinn mynda\u00f0ist snemma \u00e1 n\u00fat\u00edma, e\u00f0a fyrir u.\u00fe.b 11,3 \u00fe\u00fas. \u00e1rum. \u00deessar ni\u00f0urst\u00f6\u00f0ur gefa til kynna a\u00f0 j\u00f6klar hafi veri\u00f0 virkari \u00e1 t\u00edmum afj\u00f6klunar en \u00e1\u00f0ur var tali\u00f0. Auk \u00feess veitir ranns\u00f3knin uppl\u00fdsingar um innri ger\u00f0 j\u00f6kulgar\u00f0a sem myndast \u00ed sj\u00f3 og \u00feau ferli sem eru a\u00f0 verki vi\u00f0 myndun sl\u00edkra gar\u00f0a.<\/p>\n<p><strong>Um doktorsefni\u00f0<\/strong><\/p>\n<p>\u00deorbj\u00f6rg Sigf\u00fasd\u00f3ttir f\u00e6ddist 31. mars 1986. Foreldrar hennar eru Sigf\u00fas J\u00f3hannesson og Theresa Anne O\u2019Brien. \u00deorbj\u00f6rg lauk BS-pr\u00f3fi \u00ed jar\u00f0fr\u00e6\u00f0i vi\u00f0 H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 2011, og MS-pr\u00f3fi fr\u00e1 jar\u00f0fr\u00e6\u00f0ideild Lundarh\u00e1sk\u00f3la \u00ed Sv\u00ed\u00fej\u00f3\u00f0 sumari\u00f0 2013. \u00cd \u00e1g\u00fast sama \u00e1r h\u00f3f h\u00fan doktorsn\u00e1m til sameiginlegrar gr\u00e1\u00f0u fr\u00e1 Lundarh\u00e1sk\u00f3la og H\u00e1sk\u00f3la \u00cdslands. Fyrri hluta n\u00e1mst\u00edmans dvaldi h\u00fan vi\u00f0 Lundarh\u00e1sk\u00f3la en \u00feann s\u00ed\u00f0ari vi\u00f0 H\u00e1sk\u00f3la \u00cdslands.<\/p>\n<p>Maki \u00deorbjargar er Bjarni Freyr Borgarsson og eiga \u00feau einn son, S\u00f6lva Jarl, \u00feriggja \u00e1ra.<\/p>\n<\/div><\/div>","protected":false},"featured_media":1984,"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":"2019-11-29T13:30:00+00:00","_phd_date_end":"2019-11-29T14:30:00+00:00","_phd_location":"Askja Stofa 132","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"J\u00f6klunarsaga ne\u00f0ri hluta Borgarfjar\u00f0ar: greining \u00e1 j\u00f6kulh\u00f6ggu\u00f0um setl\u00f6gum og landformum (Past dynamics of a marine-terminating glacier in lower Borgarfj\u00f6r\u00f0ur, west Iceland: analyses of glaciotectonic sediments and landforms)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsfyrirlestur_i_jardfraedi_thorbjorg_sigfusdottir","_phd_source_node_id":"324941","_phd_source_type":"vidburdir","_phd_member_id":575,"footnotes":""},"phd_school":[113,93],"phd_discipline":[115],"class_list":["post-6133","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\/6133","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\/6133\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/1984"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6133"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6133"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}