Blar i Department of Earth Science på tittel
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Ray-Born Modelling and Full Waveform Inversion
(Master thesis, 2013-06-03)Seismic forward modelling is used to simulate seismic wave propagation in the subsurface. Common modelling techniques include methods such as the ray-Born approximation and the finite difference method. In this thesis I ... -
Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record
(Peer reviewed; Journal article, 2014-09-01)Previous studies of marine sequences from the Faroe Islands region have identified a series of coarse-grained tephra horizons deposited during Marine Isotope Stage (MIS) 5. Here we reassess the MIS 5 tephrostratigraphy of ... -
A reappraisal of the H–κ stacking technique: implications for global crustal structure
(Journal article; Peer reviewed, 2019)H–κ stacking is used routinely to infer crustal thickness and bulk-crustal VP/VS ratio from teleseismic receiver functions. The method assumes that the largest amplitude P-to-S conversions beneath the seismograph station ... -
Reconnaissance report and preliminary ground motion simulation of the 12 May 2008 Wenchuan earthquake
(Peer reviewed; Journal article, 2010)The Mw = 8.0Wenchuan earthquake of May 12, 2008, caused destruction over a wide area. The earthquake cost more than 69,000 lives and the damage is reported to have left more than 5 million people homeless. It is estimated ... -
Reconstructing early Holocene seasonal bottom-water temperatures in the northern North Sea using stable oxygen isotope records of Arctica islandica shells
(Journal article; Peer reviewed, 2021)The knowledge of seasonal temperature variability in the ocean is essential for understanding climate and its response to forcing factors. Time intervals with highly dynamic climate and increased seasonal forcing such as ... -
Reconstructing environmental variability at Leynavatn, Faroe Islands
(Master thesis, 2019-06-26)A new continuous environmental reconstruction has been established based on a 390 cm long lake core from Leynavatn Streymoy (southeast Faroes Islands), containing sediments spanning from the last 550 CE (Common Era). To ... -
Reconstruction of changes in the Weddell Sea sector of the Antarctic Ice Sheet since the Last Glacial Maximum
(Peer reviewed; Journal article, 2014-09-15)A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms ... -
Reconstruction of glacier variability from lake sediments reveals dynamic Holocene climate in Svalbard
(Peer reviewed; Journal article, 2015-09-12)The Arctic is warming faster than anywhere else on Earth. Holocene proxy time-series are increasingly used to put this amplified response in perspective by understanding Arctic climate processes beyond the instrumental ... -
Record summer rains in 2019 led to massive loss of surface and cave ice in SE Europe
(Journal article; Peer reviewed, 2021)Glaciers worldwide are shrinking at an accelerated rate as the climate changes in response to anthropogenic influence. While increasing air temperature is the main factor behind glacier mass and volume loss, variable ... -
Record-breaking height for 8000-Year-Old tsunami in the North Atlantic
(EOS : Transactions;Vol. 84, No.31, Journal article, 2003-08-05) -
Reduced El Niño variability in the mid-Pliocene according to the PlioMIP2 ensemble
(Journal article; Peer reviewed, 2021)The mid-Pliocene warm period (3.264–3.025 Ma) is the most recent geological period during which atmospheric CO2 levels were similar to recent historical values (∼400 ppm). Several proxy reconstructions for the mid-Pliocene ... -
Reducing Uncertainties in Carbonate Clumped Isotope Analysis Through Consistent Carbonate-Based Standardization
(Peer reviewed; Journal article, 2018)About a decade after its introduction, the field of carbonate clumped isotope thermometry is rapidly expanding because of the large number of possible applications and its potential to solve long‐standing questions in Earth ... -
Refining benthic foraminiferal Mg/Ca-temperature calibrations using core-tops from the western tropical Atlantic: Implication for paleotemperature estimation
(Peer reviewed; Journal article, 2013-04)Benthic foraminiferal Mg/Ca has been shown to have great potential as a proxy for reconstructing deep water temperatures. However, the exact relationship between Mg uptake in benthic foraminifera and temperature is still ... -
Regional correlation and seismic stratigraphy of Triassic Strata in the Greater Barents Sea: implications for sediment transport in Arctic basins
(Journal article; Peer reviewed, 2020)The Greater Barents Sea Basin (GBSB) in Arctic Russia and Norway is an intracratonic basin that accommodated an enormous amount of sediment during the Triassic. These deposits are up to 4.5 km thick over an area 2,500,000 ... -
Rekonstruksjon av bredemde sjøar ved Gråfjellsbrea, Folgefonna
(Master thesis, 2021-09-15)Global oppvarming og smeltande brear fører til aukande fare knytt til stabiliteten av bredemde sjøar og drenering ved jøkullaup. Eit jøkullaup er ei brå tapping av ein bredemd sjø med påfølgjande stor vassføring som igjen ... -
Rekonstruksjon av deglasiasjonsforløpet og havnivåendringar i Valldal, Fjord kommune, Møre og Romsdal, ved bruk av 10Be-eksponeringsdatering og GIS-analysar
(Master thesis, 2021-06-01)Hovudformålet med masteroppgåva er å rekonstruere deglasiasjonsforløpet og havnivåendringane i Valldal, Fjord kommune, for seinglasial tid og holocen. 27 beryllium-10 eksponeringsaldrar frå overflater i Valldal nyttast til ... -
Rekonstruksjon av flommer i Vossovassdraget de siste tusen år
(Master thesis, 2018-06-20)Lake sediments have the potential to register past flood events beyond historical and instrumental archives. In this study, several sediment cores from the bottom of lake Vangsvatnet have been studied to identify flood ... -
Rekonstruksjon av holosen breaktivitet i vestlig sektor av Nordfonna, Folgefonna. En studie basert på analyser av innsjøkjerner og kvartærgeologisk kartlegging
(Master thesis, 2014-06-02)Denne masteroppgaven fokuserer hovedsakelig på bre- og klimafluktuasjoner i vestlig sektor av Nordfonna, Folgefonna. Arbeidet vil baseres på 1) kvartærgeologisk kartlegging av områdene rund brefronten til Juklavassbreen ... -
Rekonstruksjon av innlandsisen i Geiranger i yngre dryas og kvartærgeologisk kartlegging av Grinddalen
(Master thesis, 2018-06-13)The coastal areas of Sunnmøre has been subject to several previous studies, and they show that these areas were ice-free early in the deglaciation after LGM (last glacial maximum). Less research has been done on the ...