Department of Earth Science
Recent Submissions
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Protracted late Neoproterozic – early Palaeozoic deformation and cooling history of Sør Rondane, East Antarctica, from 40Ar/39Ar and U–Pb geochronology
(Journal article; Peer reviewed, 2020)40Ar/39Ar and U–Pb data from five structural domains constrain the late Neoproterozoic – early Palaeozoic tectonothermal history of the eastern part of the East African–Antarctic Orogen in Sør Rondane. A total of 27 new ... -
A multi-model CMIP6-PMIP4 study of Arctic sea ice at 127 ka: sea ice data compilation and model differences
(Journal article; Peer reviewed, 2021)The Last Interglacial period (LIG) is a period with increased summer insolation at high northern latitudes, which results in strong changes in the terrestrial and marine cryosphere. Understanding the mechanisms for this ... -
How well can near infrared reflectance spectroscopy (NIRS) measure sediment organic matter in multiple lakes?
(Journal article; Peer reviewed, 2020)Loss-on-ignition (LOI) is the most widely used measure of organic matter in lake sediments, a variable related to both climate and land-use change. The main drawback for conventional measurement methods is the processing ... -
Crustal structure and erosion of the Lofoten/Vesterålen shelf, northern Norwegian margin
(Journal article; Peer reviewed, 2020)The Norwegian continental shelf has been through several rift phases since the Caledonian orogeny. Early Cretaceous rifting created the largest sedimentary basins, and Early Cenozoic continental breakup between East Greenland ... -
Characterization of seabed properties from Scholte waves acquired on floating ice on shallow water
(Journal article; Peer reviewed, 2020)Seismic surveying of the coastal areas in the Arctic is best facilitated during wintertime when the sea ice is land-fast. This eases the logistics of the operation and assures that there is no damage made to the vulnerable ... -
Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago
(Journal article; Peer reviewed, 2020)Rapid sea-level rise caused by the collapse of large ice sheets is a threat to human societies. In the last deglacial period, the rate of global sea-level rise peaked at more than 4 cm yr−1 during Meltwater Pulse 1A, which ... -
New flood frequency estimates for the largest river in Norway based on the combination of short and long time series
(Journal article; Peer reviewed, 2020)The Glomma River is the largest in Norway, with a catchment area of 154 450 km2. People living near the shores of this river are frequently exposed to destructive floods that impair local cities and communities. Unfortunately, ... -
Complex strain partitioning and heterogeneous extension rates during early rifting in the East Shetland Basin, northern North Sea
(Journal article; Peer reviewed, 2020)The early stages of continental rifting are accommodated by the growth of upper crustal normal fault systems that are distributed relatively evenly across the rift width. Numerous fault systems define fault arrays, the ... -
Structure and kinematics of an extensional growth fold, Hadahid Fault System, Suez Rift, Egypt
(Journal article; Peer reviewed, 2020)Normal faulting drives extensional growth folding of the Earth's upper crust during continental extension, yet we know little of how fold geometry relates to the structural segmentation of the underlying fault. We use field ... -
Sediment dispersal and redistributive processes in axial and transverse deep-time source-to-sink systems of marine rift basins: Dampier Sub-basin, Northwest Shelf, Australia
(Journal article; Peer reviewed, 2021)Morphological scaling relationships between source‐to‐sink segments have been widely explored in modern settings, however, deep‐time systems remain difficult to assess due to limited preservation of drainage basins and ... -
Spatial and temporal variations in minibasin geometry and evolution in salt tectonic provinces: Lower Congo Basin, offshore Angola
(Journal article; Peer reviewed, 2021)In passive margin salt basins, the distinct kinematic domains of thin‐skinned extension, translation and contraction exert important controls on minibasin evolution. However, the relationship between various salt minibasin ... -
Straight from the source's mouth: controls on field-constrained sediment export across the entire active Corinth Rift, central Greece
(Journal article; Peer reviewed, 2020)The volume and grain‐size of sediment supplied from catchments fundamentally control basin stratigraphy. Despite their importance, few studies have constrained sediment budgets and grain‐size exported into an active rift ... -
Turbidites, topography and tectonics: Evolution of submarine channel-lobe systems in the salt-influenced Kwanza Basin, offshore Angola
(Journal article; Peer reviewed, 2021)Understanding the evolution of submarine channel‐lobe systems on salt‐influenced slopes is challenging as these systems react to subtle, syn‐depositional changes in sea‐floor topography. The impact of large blocking ... -
Late Glacial mountain glacier culmination in Arctic Norway prior to the Younger Dryas
(Journal article; Peer reviewed, 2020)Climate changes during the Late Glacial period (LG; 15-11 ka) as recorded in Greenland and Antarctic ice cores show a bipolar pattern. Between 14.5 ka and 13 ka ago, the northern latitudes experienced the Bølling/Allerød ... -
Late Glacial and Holocene Glacier Activity in Arctic Norway. Reconstruction of glacier fluctuations using surface exposure dating of moraines and multi-proxy analysis of sediments deposited in distal glacier-fed lakes
(Doctoral thesis, 2014-12-11)Late Glacial and Holocene glacier activity in Arctic Norway was reconstructed based on high-sensitivity 10Be dating of a moraine sequence deposited by the mountain glacier Rødhetta on the island of Arnøya, and a study of ... -
GrSMBMIP: intercomparison of the modelled 1980-2012 surface mass balance over the Greenland Ice Sheet
(Journal article; Peer reviewed, 2020)Observations and models agree that the Greenland Ice Sheet (GrIS) surface mass balance (SMB) has decreased since the end of the 1990s due to an increase in meltwater runoff and that this trend will accelerate in the future. ... -
Interpreting archaeological site-formation processes at a mountain ice patch: A case study from Langfonne, Norway
(Journal article; Peer reviewed, 2021)In the context of global warming, ice patches are increasingly important foci of high-elevation archaeology. Langfonne in Jotunheimen, central southern Norway, is uniquely suited to provide a window onto site formation ... -
Volcaniclastic Dispersal During Submarine Lava Effusion: The 2012 Eruption of Havre Volcano, Kermadec Arc, New Zealand
(Journal article; Peer reviewed, 2020)Understanding clast dispersal from subaqueous volcanism is hampered by uncertainty in the source and extent of seafloor deposits. Extensive sampling in situ of seafloor deposits from the 2012 submarine eruption of Havre ... -
Source Study of the 24 August 2016 Mw 6.8 Chauk, Myanmar, Earthquake
(Journal article; Peer reviewed, 2018)The source process of an intraslab intermediate‐depth earthquake (h=90 km) that occurred near Chauk, central Myanmar, on 24 August 2016 was investigated using teleseismic body‐wave inversion. The focal mechanism solution ... -
Implications of 3D Seismic Raytracing on Focal Mechanism Determination
(Journal article; Peer reviewed, 2019)The purpose of this study is to investigate apparent first‐motion polarities mismatch at teleseismic distances in the determination of focal mechanism. We implement and compare four seismic raytracing algorithms to compute ...
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