{"id":6118,"date":"2026-10-19T09:48:29","date_gmt":"2026-10-19T09:48:29","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-jardedlisfraedi-joaquin-m-c-belart\/"},"modified":"2026-10-19T09:48:29","modified_gmt":"2026-10-19T09:48:29","slug":"doktorsvorn-i-jardedlisfraedi-joaquin-m-c-belart","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-jardedlisfraedi-joaquin-m-c-belart\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed jar\u00f0e\u00f0lisfr\u00e6\u00f0i – Joaqu\u00edn M.C. Belart"},"content":{"rendered":"
\n
\n

Doktorsefni:<\/strong>\u00a0Joaqu\u00edn M.C. Belart<\/p>\n

Heiti ritger\u00f0ar:<\/strong>\u00a0Afkoma \u00edslenskra j\u00f6kla, breytileiki og tengsl vi\u00f0 loftslag<\/p>\n

Andm\u00e6lendur:<\/strong>
<\/strong>Dr. Francisco Navarro, pr\u00f3fessor vi\u00f0 T\u00e6knih\u00e1sk\u00f3linn \u00ed Madrid, Sp\u00e1ni.
Dr. Beata Csatho, pr\u00f3fessor, vi\u00f0 Buffalo H\u00e1sk\u00f3la, New York fylki, Bandar\u00edkjunum.<\/p>\n

Lei\u00f0beinendur:<\/strong>\u00a0 Dr. Eyj\u00f3lfur Magn\u00fasson, ranns\u00f3knars\u00e9rfr\u00e6\u00f0ingur vi\u00f0 Jar\u00f0v\u00edsindastofnun H\u00e1sk\u00f3lans og Dr. Etienne Berthier, pr\u00f3fessor vi\u00f0 Laboratoire d\u2019Etudes en G\u00e9ophysique et Oc\u00e9anographie Spatiales, Universit\u00e9 de Toulouse, Frakklandi.<\/p>\n

Einnig \u00ed doktorsnefnd:<\/strong><\/p>\n

Finnur P\u00e1lsson, verkfr\u00e6\u00f0ingur vi\u00f0 Jar\u00f0v\u00edsindastofnun H\u00e1sk\u00f3lans.
Dr. Gu\u00f0finna A\u00f0algeirsd\u00f3ttir, pr\u00f3fessor vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands.
Dr. Simon Gascoin, ranns\u00f3knars\u00e9rfr\u00e6\u00f0ingur hj\u00e1 CNRS, Frakklandi.<\/strong><\/p>\n<\/p>\n

Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Andri Stef\u00e1nsson, pr\u00f3fessor og varadeildarforseti Jar\u00f0v\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands<\/p>\n

\u00c1grip<\/strong><\/p>\n

Vi\u00f0fangsefni doktorsverkefnis er n\u00fdting fjark\u00f6nnunargagna vi\u00f0 ger\u00f0 h\u00e6\u00f0arkorta af j\u00f6klum og hvernig eigi a\u00f0 n\u00fdta \u00feau til a\u00f0 f\u00e1 sem n\u00e1kv\u00e6masta m\u00e6linga \u00e1 afkomu j\u00f6kla \u00e1 t\u00edmabilum sem spanna allt fr\u00e1 \u00e1rst\u00ed\u00f0 til \u00e1ratuga. Auk \u00feess eru vensl afkomu og ve\u00f0urfars eru greind.<\/p>\n

Til a\u00f0 kanna notagildi fjark\u00f6nnunargagna vi\u00f0 ranns\u00f3knir \u00e1 \u00e1rst\u00ed\u00f0abundinni afkomu j\u00f6kla voru yfirbor\u00f0sh\u00e6\u00f0arkort af Drangaj\u00f6kli unnin eftir h\u00e1upplausnarlj\u00f3smyndum fr\u00e1 Pl\u00e9iades og WorldView-2 gervitunglunum vi\u00f0 upphaf, mi\u00f0bik og lok vetursins 2014\u20132015. M\u00e6lingar \u00e1 e\u00f0lismassa vetrarsnj\u00f3s a\u00f0 vori voru n\u00fdttar til a\u00f0 skor\u00f0a betur vetrarafkomu j\u00f6kulsins auk \u00feess sem ni\u00f0urst\u00f6\u00f0urnar voru bornar saman vi\u00f0 m\u00e6lda snj\u00f3\u00feykkt \u00ed afkomum\u00e6list\u00f6\u00f0um. Ni\u00f0urst\u00f6\u00f0ur ranns\u00f3knarinnar s\u00fdna \u00f3tv\u00edr\u00e6tt a\u00f0 oft er h\u00e6gt a\u00f0 n\u00fdta myndir fr\u00e1 \u00e1\u00f0urnefndum gervitunglum vi\u00f0 m\u00e6lingu vetrar\u00e1komu j\u00f6kla \u00ed sta\u00f0 \u00feess a\u00f0 leggja \u00ed kostna\u00f0arsama og erfi\u00f0a m\u00e6lilei\u00f0angra.<\/p>\n

Gr\u00ed\u00f0armiki\u00f0 safn loftmynda er til af \u00edslenskum j\u00f6klum allt aftur til \u00e1rsins 1945. S\u00ed\u00f0an \u00fe\u00e1 hafa \u00feeir flestir veri\u00f0 mynda\u00f0ir \u00e1 5 til 20 \u00e1ra fresti. Einnig hefur verulegu magni gervihnattalj\u00f3smynda sem n\u00fdtast til vinnslu h\u00e6\u00f0arkorta af j\u00f6klum veri\u00f0 afla\u00f0 eftir 2000 auk h\u00e6\u00f0arkorta eftir leysim\u00e6lingum \u00far flugv\u00e9l af flestum j\u00f6klum landsins fr\u00e1 2008 til 2013. \u00deessi yfirgripsmiklu g\u00f6gn gera m\u00f6gulega vinnslu 70 \u00e1ra afkomus\u00f6gu margra j\u00f6kla. G\u00f6gn af Eyjafjallaj\u00f6kli (~70 km2) voru n\u00fdtt til a\u00f0 \u00fer\u00f3a h\u00e1lfsj\u00e1lfvirka \u00farvinnslul\u00ednu (fl\u00e6\u00f0il\u00edna \u00farvinnslu\u00fe\u00e1tta) sem byggist \u00e1 opnum hugb\u00fana\u00f0arlausnum. \u00darvinnsla \u00feeirra gagna skila\u00f0i \u00edtarlegri s\u00f6gu um h\u00e6\u00f0arbreytingar, afkomu og umfang Eyjafjallaj\u00f6kuls sem b\u00e6\u00f0i ve\u00f0urfar og eldgos hafa stj\u00f3rna\u00f0. \u00datfr\u00e1 afkomur\u00f6\u00f0inni var besta\u00f0 l\u00ednulegt fall sem l\u00fdsir venslum \u00e1rsafkomu vi\u00f0 sumarhita og vetrar\u00farkomu auk lei\u00f0r\u00e9ttingarli\u00f0s vegna breytilegs umfangs j\u00f6kulsins. \u00deetta fall s\u00fdnir a\u00f0 st\u00f3r \u00fe\u00e1ttur breytileika afkomu j\u00f6kulsins m\u00e1 sk\u00fdra me\u00f0 breytileika \u00ed \u00feessum ve\u00f0urfars\u00fe\u00e1ttum. \u00dea\u00f0 gerir einnig kleift a\u00f0 meta hversu n\u00e6m afkoma j\u00f6kulsins er fyrir breytingum \u00ed \u00feeim.<\/p>\n

\u00darvinnslul\u00ednan var s\u00ed\u00f0an notu\u00f0 til a\u00f0 setja saman afkomus\u00f6gu 14 \u00edslenska j\u00f6kla \u00e1 um 70 \u00e1ra t\u00edmabili. J\u00f6klar \u00ed \u00f6llum landsfj\u00f3r\u00f0ungum sem og \u00e1 mi\u00f0h\u00e1lendinu voru rannsaka\u00f0ir. Me\u00f0altal og sta\u00f0alfr\u00e1vik afkomu j\u00f6klanna \u00e1 hverju t\u00edmabili fyrir sig var -0.44\u00b10.16 m v.g. \u00e1r-1 (metrar vatns\u00edgildis \u00e1 \u00e1ri) 1945\u20131960, 0.00\u00b10.21 m v.g. \u00e1r\u20131 1960\u20131980, 0.11\u00b10.25 m v.g. \u00e1r\u20131 1980\u20131994, \u20131.01\u00b10.50 m v.g. \u00e1r\u20131 1994\u20132004, \u20131.27\u00b10.56 m v.g. \u00e1r\u20131 2004\u20132010 og \u20130.14\u00b10.51 m v.g. \u00e1r\u20131 2010\u20132015. J\u00f6klar vi\u00f0 su\u00f0ur og vesturstr\u00f6ndina s\u00fdna breytilegasta afkomu fr\u00e1 einu t\u00edmabili til annars, \u00f3l\u00edkt j\u00f6klum \u00ed nor\u00f0ri og nor\u00f0vestri \u00fear sem \u00feessi breytileiki er mun minni. \u00deessi ranns\u00f3kn eykur mj\u00f6g vi\u00f0 \u00feekkingu okkar \u00e1 \u00edslenskum j\u00f6klum \u00e1\u00f0ur en mikil hl\u00fdnun var\u00f0 \u00e1 t\u00edunda \u00e1ratug s\u00ed\u00f0ustu aldar sem og hvernig afkomu \u00edslenskra j\u00f6kla breyttist \u00ed kj\u00f6lfari\u00f0.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Joaqu\u00edn M.C. Belart er f\u00e6ddur 1989 og \u00f3lst upp \u00ed Ja\u00e9n \u00ed Andal\u00fas\u00eduh\u00e9ra\u00f0i \u00e1 Sp\u00e1ni. Hann stunta\u00f0i B.Sc. n\u00e1m \u00ed landm\u00e6lingum vi\u00f0 H\u00e1sk\u00f3lann \u00ed Ja\u00e9n fr\u00e1 2007-2011 og lauk s\u00ed\u00f0an fr\u00e1 sama sk\u00f3la M.Sc. pr\u00f3fi \u00ed landm\u00e6lingaverkfr\u00e6\u00f0i sumari\u00f0 2013. A\u00f0 mastersn\u00e1mi loknu vann Joaqu\u00edn sem ranns\u00f3knarma\u00f0ur \u00ed j\u00f6klafr\u00e6\u00f0i vi\u00f0 Jar\u00f0v\u00edsindastofnun H\u00e1sk\u00f3lans. Hausti\u00f0 2015 h\u00f3f hann n\u00e1m til sameiginlegrar Ph.D. gr\u00e1\u00f0u fr\u00e1 H\u00e1sk\u00f3la \u00cdslands og H\u00e1sk\u00f3lanum \u00ed Toulouse III \u2013 Paul Sabatier.<\/p>\n

Um er a\u00f0 r\u00e6\u00f0a sameiginlega doktorsgr\u00e1\u00f0u \u00e1 milli H\u00e1sk\u00f3la \u00cdslands og University of Toulouse III \u2013 Paul Sabatier, Frakklandi.
Verkefni\u00f0 var fj\u00e1rmagna\u00f0 af Ranns\u00f3knasj\u00f3\u00f0 H\u00e1sk\u00f3la \u00cdslands og kostna\u00f0ur vi\u00f0 fer\u00f0ir \u00e1 milli h\u00e1sk\u00f3lanna var fj\u00e1rmagna\u00f0ur af Jules Verne Research Fund.<\/p>\n

Vi\u00f0bur\u00f0ur \u00e1 Facebook<\/a><\/strong><\/p>\n<\/div><\/div>","protected":false},"featured_media":1946,"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":"2018-11-29T13:00:00+00:00","_phd_date_end":"2018-11-29T15:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0arsalur","_phd_admission":"Allir velkomnir","_phd_thesis_title":"Afkoma \u00edslenskra j\u00f6kla, breytileiki og tengsl vi\u00f0 loftslag","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_jardedlisfraedi_joaquin_mc_belart","_phd_source_node_id":"312969","_phd_source_type":"vidburdir","_phd_member_id":553,"footnotes":""},"phd_school":[113,93],"phd_discipline":[114],"class_list":["post-6118","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-jardvisindadeild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-jardedlisfraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6118","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\/6118\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/1946"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6118"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6118"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}