{"id":6458,"date":"2026-10-19T09:48:56","date_gmt":"2026-10-19T09:48:56","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-jardedlisfraedi-yilin-yang\/"},"modified":"2026-10-19T09:48:56","modified_gmt":"2026-10-19T09:48:56","slug":"doktorsvorn-i-jardedlisfraedi-yilin-yang","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-jardedlisfraedi-yilin-yang\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed jar\u00f0e\u00f0lisfr\u00e6\u00f0i &#8211; Yilin Yang"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p><a href=\"https:\/\/eu01web.zoom.us\/j\/68187903468\"><strong>Streymi<\/strong><\/a><\/p>\n<p><strong>Doktorsefni:<\/strong> Yilin Yang<\/p>\n<p><strong>Heiti ritger\u00f0ar: <\/strong>\u00c1hrif jar\u00f0hniks og ferla \u00ed r\u00f3tum eldst\u00f6\u00f0va \u00e1 jar\u00f0skorpuhreyfingar \u00e1 mismunandi t\u00edmask\u00f6lum: Ni\u00f0urst\u00f6\u00f0ur \u00far eldst\u00f6\u00f0vakerfi Kr\u00f6flu, \u00cdslandi (Volcano-tectonic Controls on Ground Deformation across Temporal Scales: Insights from the Krafla Volcanic System, Iceland)<\/p>\n<p><strong>Andm\u00e6lendur<\/strong>:<br \/>Dr. Corn\u00e9 Kreemer, pr\u00f3fessor vi\u00f0 University of Nevada \u00ed Reno, Bandar\u00edkjunum <br \/>Dr. Rapha\u00ebl Grandin, d\u00f3sent vi\u00f0 Institut de Physique du Globe de Paris, Universit\u00e9 Paris Cit\u00e9, Frakklandi<\/p>\n<p><strong>Lei\u00f0beinandi: <\/strong>Dr. Freysteinn Sigmundsson, ranns\u00f3knapr\u00f3fessor vi\u00f0 Jar\u00f0v\u00edsindastofnun, H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd: <br \/><\/strong>Dr. Halld\u00f3r Geirsson, pr\u00f3fessor vi\u00f0 Jar\u00f0v\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands <br \/>Dr. Joachim Gottsmann, v\u00edsindama\u00f0ur vi\u00f0 jar\u00f0- og umhverfisv\u00edsindadeild, Ludwig-Maximilians-Universit\u00e4t \u00ed M\u00fcnchen, \u00de\u00fdskalandi <br \/>Dr. Vincent Drouin, s\u00e9rfr\u00e6\u00f0ingur vi\u00f0 Ve\u00f0urstofu \u00cdslands<\/p>\n<p><strong>Doktorsv\u00f6rn st\u00fdrir:<\/strong> Dr. Andri Stef\u00e1nsson, pr\u00f3fessor og deildarforseti Jar\u00f0v\u00edsindadeildar H\u00cd<\/p>\n<p><strong>\u00c1grip<\/strong><\/p>\n<p>M\u00e6lingar \u00e1 jar\u00f0skorpuhreyfingum \u00e1 eldvirkum sv\u00e6\u00f0um og t\u00falkun \u00e1 m\u00e6ldri afl\u00f6gun eru mikilv\u00e6gar til a\u00f0 auka skilning \u00e1 heg\u00f0un eldfjalla og ferlum sem eiga s\u00e9r sta\u00f0 \u00ed r\u00f3tum \u00feeirra. Vi\u00f0 t\u00falkun \u00e1 afl\u00f6gun \u00fearf a\u00f0 hafa \u00ed huga a\u00f0 m\u00e6ldar jar\u00f0skorpuhreyfingar stafa oft af samspili margra samverkandi ferla. Eldst\u00f6\u00f0vakerfi Kr\u00f6flu liggur \u00e1 flekaskilunum \u00e1 milli Nor\u00f0ur-Amer\u00edku og Evras\u00edu flekanna \u00ed Nor\u00f0urgosbelti \u00cdslands. Sprungusveimur Kr\u00f6flu og Kr\u00f6fluaskjan, tv\u00f6 jar\u00f0hitasv\u00e6\u00f0i, gli\u00f0nunart\u00edmabil 1975\u20131984, jar\u00f0hitan\u00fdting \u00ed fimm \u00e1ratugi og yfirgripsmiklar m\u00e6lingar \u00e1 jar\u00f0skorpuhreyfingum gera Kr\u00f6flu a\u00f0 hentugu ranns\u00f3knarsv\u00e6\u00f0i til a\u00f0 rannsaka \u00feau ferli sem valda eldfjallaafl\u00f6gun. \u00cd \u00feessari ritger\u00f0 eru rannsaka\u00f0ar jar\u00f0skorpuhreyfingar \u00ed Kr\u00f6flu yfir mismunandi t\u00edmaskala til a\u00f0 kanna \u00feau ferli sem valda jar\u00f0skorpuhreyfingum. Fyrir afl\u00f6gun \u00e1 stuttum t\u00edmaskala, \u00fe\u00e1 var rannsaka\u00f0 t\u00edmabil aukinnar tilf\u00e6rslu til vesturs \u00e1ri\u00f0 2014-2015 \u00ed Kr\u00f6flu sem greint var \u00ed t\u00edmar\u00f6\u00f0um jar\u00f0skorpuhreyfinga sem \u00e1kvar\u00f0a\u00f0ar voru \u00fat fr\u00e1 GNSS (Global Navigation Satellite System) landm\u00e6lingum og svok\u00f6llu\u00f0u Bayes\u00edsku l\u00edkindamati (e. Bayesian inference). \u00deessi fr\u00e1vik \u00ed jar\u00f0skorpuhreyfingum byrju\u00f0u fyrir myndun kvikugangs \u00ed eldst\u00f6\u00f0vakerfi B\u00e1r\u00f0arbungu \u00e1ri\u00f0 2014, um 120 km sunnan vi\u00f0 Kr\u00f6flu, og \u00e1ttu s\u00e9r sta\u00f0 \u00e1 sama t\u00edma og fyrirbo\u00f0avirkni m\u00e6ldist \u00ed og vi\u00f0 B\u00e1r\u00f0arbungu. \u00deetta bendir til m\u00f6gulegrar tengingar milli eldst\u00f6\u00f0vakerfi \u00ed Nor\u00f0urgosbelti \u00cdslands. Fyrir afl\u00f6gunart\u00edmabil sem n\u00e6r yfir \u00e1ratug, \u00fe\u00e1 voru rannsaka\u00f0ar jar\u00f0skorpuhreyfingar sem ur\u00f0u \u00e1 gli\u00f0nunart\u00edmabilinu 1975-1984. Endurb\u00e6tt reiknil\u00edkan af endurteknum kvikug\u00f6ngum sem myndast vi\u00f0 l\u00e1r\u00e9tt fl\u00e6\u00f0i bergkviku \u00ed jar\u00f0skorpunni var \u00fer\u00f3a\u00f0 til a\u00f0 taka tillit til rauns\u00e6rrar l\u00f6gunar kvikuganga og heg\u00f0unar jar\u00f0skorpunnar. L\u00edkani\u00f0 endurskapar helstu reglubundna eiginleika kvikuganganna sem myndu\u00f0ust 1975\u20131984. \u00dea\u00f0 dregur fram mikilv\u00e6gt hlutverk tekt\u00f3n\u00edsks spennusvi\u00f0s og landslags \u00ed a\u00f0 kn\u00fdja \u00e1fram l\u00e1r\u00e9tta \u00fatbrei\u00f0slu kvikuganga, sem gerir kviku kleift a\u00f0 fl\u00e6\u00f0a inn \u00ed ganga e\u00f0a valda eldgosum vi\u00f0 l\u00e1gan \u00fer\u00fdsting \u2013 jafnvel undir berg\u00feyngdar\u00fer\u00fdstingi (e. lithostatic pressure). \u00deegar kemur a\u00f0 langt\u00edmabreytingum eru hra\u00f0asvi\u00f0, metin \u00fat fr\u00e1 GNSS g\u00f6gnum (2002\u20132024) og bylgjuv\u00edxlm\u00e6lingum me\u00f0 ratsj\u00e1rgervitunglum (e. Interferometric analysis of synthetic aperture radar satellite images, InSAR (2015\u20132023), notu\u00f0 til a\u00f0 \u00e1kvar\u00f0a l\u00edkan af flekaskilum fyrir mi\u00f0hluta eldst\u00f6\u00f0vakerfis Kr\u00f6flu, skipt upp \u00ed sex b\u00fata. \u00c1lykta\u00f0 er a\u00f0 \u00e1s flekaskilanna liggi \u00fear sem n\u00fdlegar gossprungur eru og stefna hans s\u00e9 \u00ed samr\u00e6mi vi\u00f0 kortlag\u00f0ar sprungur. L\u00e6singard\u00fdpi (e. locking depth) flekaskilanna er minnst, e\u00f0a um 3.5 km undir Kr\u00f6flu\u00f6skjunni, og eykst \u00ed um 4,3 km til nor\u00f0urs og \u00ed um 6.8 km til su\u00f0urs. \u00deessi breytileiki \u00ed l\u00e6singard\u00fdpi endurspeglar breytingar \u00ed efnisheg\u00f0un jar\u00f0skorpunnar. Fr\u00e1vikshra\u00f0ar s\u00fdna \u00ferj\u00fa sta\u00f0bundin samdr\u00e1ttarsv\u00e6\u00f0i sem tengjast jar\u00f0hitavirkni og sigi hrauns. Ni\u00f0urst\u00f6\u00f0ur ritger\u00f0arinnar auka skilning \u00e1 samspili eldvirkni og tekt\u00f3n\u00edskra ferla \u00e1 flekaskilum, og \u00fer\u00f3un sem unni\u00f0 var a\u00f0 \u00ed a\u00f0fer\u00f0afr\u00e6\u00f0i hefur v\u00ed\u00f0t\u00e6kt hagn\u00fdtt gildi.<\/p>\n<p>\u00a0<\/p>\n<p><strong>Um doktorsefni\u00f0<\/strong><\/p>\n<p>Yilin Yang f\u00e6ddist \u00e1ri\u00f0 1996 \u00ed Fujian-h\u00e9ra\u00f0i \u00ed K\u00edna. Hann lauk B.S. gr\u00e1\u00f0u \u00ed landm\u00e6linga- og kortager\u00f0arverkfr\u00e6\u00f0i \u00e1ri\u00f0 2018 og M.S.-gr\u00e1\u00f0u \u00ed landm\u00e6linga- og kortager\u00f0arverkfr\u00e6\u00f0i \u00e1ri\u00f0 2021, b\u00e1\u00f0um fr\u00e1 School of Geodesy and Geomatics vi\u00f0 H\u00e1sk\u00f3lann \u00ed Wuhan, K\u00edna. Eftir meistaran\u00e1mi\u00f0 starfa\u00f0i hann sem a\u00f0sto\u00f0arverkfr\u00e6\u00f0ingur vi\u00f0 H\u00e1sk\u00f3lann \u00ed Wuhan \u00e1rin 2021\u20132022. \u00cd ma\u00ed 2022 h\u00f3f hann doktorsn\u00e1m \u00ed jar\u00f0e\u00f0lisfr\u00e6\u00f0i vi\u00f0 H\u00e1sk\u00f3la \u00cdslands undir evr\u00f3pska \u00fej\u00e1lfunarnetinu IMPROVE. \u00cd doktorsn\u00e1minu dvaldi hann \u00ed samtals fj\u00f3ra m\u00e1nu\u00f0i vi\u00f0 School of Earth Sciences vi\u00f0 H\u00e1sk\u00f3lann \u00ed Bristol sem gestadoktorsnemi og \u00ed samtals tvo m\u00e1nu\u00f0i vi\u00f0 \u00cdt\u00f6lsku jar\u00f0e\u00f0lis- og eldfjallafr\u00e6\u00f0istofniunina INGV \u00ed Catania \u00e1 Sikiley. Einnig dvaldi hann \u00ed \u00ferj\u00e1r vikur vi\u00f0 ranns\u00f3knir vi\u00f0 Jar\u00f0skj\u00e1lftafr\u00e6\u00f0istofnun H\u00e1sk\u00f3lans \u00ed T\u00f3k\u00fd\u00f3.<\/p>\n<\/div><\/div>","protected":false},"featured_media":5876,"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":"2026-01-09T13:00:00+00:00","_phd_date_end":"2026-01-09T15:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0arsalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"\u00c1hrif jar\u00f0hniks og ferla \u00ed r\u00f3tum eldst\u00f6\u00f0va \u00e1 jar\u00f0skorpuhreyfingar \u00e1 mismunandi t\u00edmask\u00f6lum: Ni\u00f0urst\u00f6\u00f0ur \u00far eldst\u00f6\u00f0vakerfi Kr\u00f6flu, \u00cdslandi (Volcano-tectonic Controls on Ground Deformation across Temporal Scales: Insights from the Krafla Volcanic System, Iceland)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_jardedlisfraedi_yilin_yang","_phd_source_node_id":"443031","_phd_source_type":"vidburdir","_phd_member_id":1000,"footnotes":""},"phd_school":[113,93],"phd_discipline":[114],"class_list":["post-6458","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\/6458","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\/6458\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/5876"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6458"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6458"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}