{"id":6199,"date":"2026-10-19T09:48:37","date_gmt":"2026-10-19T09:48:37","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-jardfraedi-alberto-caracciolo\/"},"modified":"2026-10-19T09:48:37","modified_gmt":"2026-10-19T09:48:37","slug":"doktorsvorn-i-jardfraedi-alberto-caracciolo","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-jardfraedi-alberto-caracciolo\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed jar\u00f0fr\u00e6\u00f0i – Alberto Caracciolo"},"content":{"rendered":"
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V\u00f6rninni ver\u00f0ur streymt<\/a><\/p>\n

Doktorsefni:<\/strong>\u00a0Alberto Caracciolo<\/p>\n

Heiti ritger\u00f0ar:<\/strong>\u00a0\u00der\u00f3un kristalr\u00edkra kvikugeyma undir B\u00e1r\u00f0arbungu-Vei\u00f0ivatna eldst\u00f6\u00f0varkerfinu
(Temporal evolution of crystal mush reservoirs beneath the B\u00e1r\u00f0arbunga-Vei\u00f0iv\u00f6tn volcanic system, Iceland)<\/p>\n

Andm\u00e6lendur:<\/strong>
<\/strong>Dr. Chiara Maria Petrone, v\u00edsindama\u00f0ur vi\u00f0 Natural History Museum, Bretlandi
Dr. Maxim Portnyagin, v\u00edsindama\u00f0ur vi\u00f0 GEOMAR Helmholtz-Zentrum f\u00fcr Ozeanforschung Kiel, \u00de\u00fdskalandi<\/p>\n

Lei\u00f0beinandi:<\/strong>\u00a0Dr. Enik\u0151 Bali, d\u00f3sent vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n

Einnig \u00ed doktorsnefnd: <\/strong>Dr. Maren Kahl, n\u00fddoktor vi\u00f0 Institut f\u00fcr Geowissenschaften, Universit\u00e4t Heidelberg, \u00de\u00fdskalandi
Dr. Gu\u00f0mundur H. Gu\u00f0finnsson, fr\u00e6\u00f0ima\u00f0ur vi\u00f0 Jar\u00f0v\u00edsindastofnun H\u00e1sk\u00f3lans
Dr. Margaret E. Hartley, d\u00f3sent vi\u00f0 University of Manchester, Englandi<\/p>\n

Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Freysteinn Sigmundsson, v\u00edsindama\u00f0ur vi\u00f0 Jar\u00f0v\u00edsindastofnun og deildarforseti Jar\u00f0v\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands<\/p>\n

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

E\u00f0lisefnafr\u00e6\u00f0ilegir eiginleikar kvikugeyma \u00ed kvikukerfum, sem dreifast \u00e1 m\u00f6rg d\u00fdptarbil \u00ed jar\u00f0skorpunni, geta breyst me\u00f0 t\u00edmanum, sem og t\u00edmakvar\u00f0i ferla sem hafa \u00e1hrif \u00e1 kristalla og br\u00e1\u00f0ir \u00ed skorpunni.
\u00cd \u00feessari ritger\u00f0 er beitt a\u00f0fer\u00f0 \u00fear sem saman eru n\u00fdttar magnbundnar bergfr\u00e6\u00f0ilegar og jar\u00f0efnafr\u00e6\u00f0ilegar greiningar \u00e1samt \u00e1kv\u00f6r\u00f0unum \u00e1 t\u00edma me\u00f0 efnasveimism\u00e6lingum. Tilgangurinn er a\u00f0 meta breytingar me\u00f0 t\u00edma \u00e1 geymslu og hreyfingar kviku \u00ed kristalr\u00edkum kvikugeymum undir B\u00e1r\u00f0arbungu-Vei\u00f0ivatnakerfinu. Me\u00f0 \u00feetta a\u00f0 markmi\u00f0i er sj\u00f3num beint a\u00f0 fimm gosmyndunum af mismunandi aldri, \u00fe.e. Lj\u00f3sufj\u00f6llum (gos undir j\u00f6kli), Brandi, Fonti og Saxa (fr\u00e1 snemm-N\u00fat\u00edma), \u00dej\u00f3rs\u00e1rdalshrauni og Drekahrauni (fr\u00e1 mi\u00f0- N\u00fat\u00edma) og fr\u00e1 s\u00f6gulegu gosi \u00ed Vei\u00f0iv\u00f6tnum \u00e1ri\u00f0 1477.
Efnasamsetning d\u00edla gefur til kynna a\u00f0 \u00feeir hafi ekki veri\u00f0 \u00ed jafnv\u00e6gi vi\u00f0 br\u00e1\u00f0ina sem bar \u00fe\u00e1 til yfirbor\u00f0s. Samsetning kjarna \u00ed plag\u00ed\u00f3klasi, \u00f3liv\u00edni og kl\u00edn\u00f3p\u00fdroxeni er of frumst\u00e6\u00f0 til a\u00f0 hafa veri\u00f0 \u00ed efnajafnv\u00e6gi vi\u00f0 br\u00e1\u00f0ina, sem \u00fe\u00fd\u00f0ir a\u00f0 geymsla og uppbrot \u00e1 kristalr\u00edkri kviku h\u00f6f\u00f0u mikilv\u00e6gu hlutverki a\u00f0 gegna \u00ed \u00feessum eldgosum. Samsetning d\u00edla er breytileg me\u00f0 t\u00edma og eru gosmyndanir fr\u00e1 s\u00ed\u00f0asta j\u00f6kulskei\u00f0i og myndanir fr\u00e1 \u00fev\u00ed snemma \u00e1 N\u00fat\u00edma frumst\u00e6\u00f0ari og hafa minni breytileika \u00ed samsetningu (An85-92, Fo81-87) en myndanir fr\u00e1 mi\u00f0-N\u00fat\u00edma og s\u00f6gulegum t\u00edma (An80-92, Fo77-87). Mismunandi \u00fer\u00fdstim\u00e6lar gefa til kynna a\u00f0 \u00f3h\u00e1\u00f0 t\u00edma hafi veri\u00f0 undir B\u00e1r\u00f0arbungu-Vei\u00f0ivatnakerfinu lagskipt kvikukerfi hva\u00f0 var\u00f0ar samsetningu, dreift yfir d\u00fdptarbil, \u00fear sem kristallar og br\u00e1\u00f0 flytjast sm\u00e1m saman upp \u00e1 vi\u00f0. F\u00e6r\u00f0 eru s\u00e9rstaklega r\u00f6k fyrir \u00fev\u00ed a\u00f0 \u00ed mi\u00f0skorpunni \u00e1 um 6.8-7.8 \u00b1 2.5 km d\u00fdpi hafi til lengri t\u00edma veri\u00f0 geymir \u00fear sem br\u00e1\u00f0ir og kristallar n\u00e1 jafnv\u00e6gi fyrir eldgos. Mest kom \u00far geymi e\u00f0a geymum dj\u00fapt \u00ed ne\u00f0ri skorpunni \u00e1 \u00eds\u00f6ld og snemma \u00e1 N\u00fat\u00edma. Snefilefni og s\u00farefnissams\u00e6tur (\u03b418O) benda til a\u00f0streymis frumst\u00e6\u00f0ra br\u00e1\u00f0arblandna sem bera merki um b\u00e6\u00f0i sneidda og au\u00f0ga\u00f0a m\u00f6ttul\u00fe\u00e6tti. Vi\u00f0 \u00fea\u00f0 a\u00f0 frumst\u00e6\u00f0ar br\u00e1\u00f0arbl\u00f6ndur f\u00e6rast upp \u00ed efra hluta skorpunnar \u00fer\u00f3ast \u00fe\u00e6r og \u03b418O-gildi \u00feeirra l\u00e6kka vegna skorpumengunar. T\u00edmam\u00e6lingar me\u00f0 Fe-Mg-sveimi s\u00fdna a\u00f0 d\u00edlar f\u00f3ru s\u00ed\u00f0ast \u00e1 hreyfingu og voru hrifsa\u00f0ir upp af kviku 5-12 m\u00e1nu\u00f0um fyrir gos, me\u00f0an losna\u00f0i um d\u00edla \u00ed mi\u00f0-N\u00fat\u00edma og s\u00f6gulegum gosmyndunum um 2 m\u00e1nu\u00f0um fyrir gos. Tilvist gabbr\u00f3hny\u00f0linga \u00ed s\u00fdnum fr\u00e1 \u00fev\u00ed snemma \u00e1 N\u00fat\u00edma og \u00fea\u00f0 a\u00f0 \u00feeir hafa meira af krist\u00f6llum en hny\u00f0lingar \u00ed yngri s\u00fdnum bendir til a\u00f0 \u00e1 \u00feeim t\u00edma hafi kristalr\u00edk kvika \u00feurft lengri t\u00edma til brotna upp, fara af sta\u00f0 og breytast \u00ed kviku sem gat komi\u00f0 upp \u00ed gosum. \u00deessar breytingar me\u00f0 t\u00edma m\u00e1 tengja aukinni kvikuframlei\u00f0ni \u00e1 snemm-N\u00fat\u00edma sem aftur m\u00e1 rekja til \u00e1hrifa fr\u00e1 breyttu j\u00f6kulfargi.<\/p>\n

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

Alberto Caracciolo f\u00e6ddist \u00e1 \u00cdtal\u00edu \u00e1ri\u00f0 1992. Hann lauk BSc-gr\u00e1\u00f0u \u00ed jar\u00f0fr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3lanum \u00ed \u00darb\u00edn\u00f3 \u00e1 \u00cdtal\u00edu \u00e1ri\u00f0 2014 og MS-gr\u00e1\u00f0u \u00ed bergfr\u00e6\u00f0i og eldfjallafr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3lanum \u00ed P\u00edsa \u00e1 \u00cdtal\u00edu \u00e1ri\u00f0 2016. Eftir a\u00f0 hafa veri\u00f0 \u00ed Erasmus-starfs\u00fej\u00e1lfun vi\u00f0 Bristol-h\u00e1sk\u00f3la h\u00f3f hann doktorsn\u00e1m vi\u00f0 H\u00e1sk\u00f3la \u00cdslands \u00ed september \u00e1ri\u00f0 2017.<\/p>\n<\/div><\/div>","protected":false},"featured_media":4963,"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":"2021-02-19T14:00:00+00:00","_phd_date_end":"2021-02-19T16:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0arsalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"\u00der\u00f3un kristalr\u00edkra kvikugeyma undir B\u00e1r\u00f0arbungu-Vei\u00f0ivatna eldst\u00f6\u00f0varkerfinu (Temporal evolution of crystal mush reservoirs beneath the B\u00e1r\u00f0arbunga-Vei\u00f0iv\u00f6tn volcanic system, Iceland)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_jardfraedi_alberto_caracciolo","_phd_source_node_id":"372889","_phd_source_type":"vidburdir","_phd_member_id":722,"footnotes":""},"phd_school":[113,93],"phd_discipline":[115],"class_list":["post-6199","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\/6199","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\/6199\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/4963"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6199"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6199"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}