Browsing Department of Earth Science by Title
Now showing items 1117-1136 of 1215
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Temperature variation in caves and its significance for subterranean ecosystems
(Journal article; Peer reviewed, 2023)Climate change affects all ecosystems, but subterranean ecosystems are repeatedly neglected from political and public agendas. Cave habitats are home to unknown and endangered species, with low trait variability and intrinsic ... -
Tephra horizons identified in the western North Atlantic and Nordic Seas during the Last Glacial Period: Extending the marine tephra framework
(Journal article; Peer reviewed, 2020)Geochemically distinct volcanic ash (tephra) deposits are increasingly acknowledged as a key geochronological tool to synchronize independent paleoclimate archives. Recent advances in the detection of invisible (crypto) ... -
Tephrochronology of the North Atlantic during the Last Glacial period – a paleoclimate synchronization tool
(Doctoral thesis, 2021-04-09)During present time, the global climate is changing at a rapid pace. To understand the future consequences of these changes, studies of past abrupt climate change are essential. A natural analogue to the current climate ... -
Testing the Environmental Seismic Intensity Scale on Data Derived from the Earthquakes of 1626, 1759, 1819, and 1904 in Fennoscandia, Northern Europe
(Journal article; Peer reviewed, 2021)Earthquake environmental effects (EEEs) were compiled for the earthquakes of 1626, 1759, 1819, and 1904 in the Fennoscandian Peninsula, northern Europe. The principal source of information was the contemporary newspaper ... -
Textural and geochemical characteristics of hematitic chert deposits in SW Norway: Implications for formation settings and processes
(Master thesis, 2017-11-30)Jasper, a specific type of hematitic chert, is often interpreted as an ancient analogue to modern seafloor hydrothermal deposits. Modern low-temperature seafloor hydrothermal Fe-deposits are mainly produced by Fe(II)- ... -
The formation of the ophiolitic terrane of SW Norway - relationships between immature island arc volcanic sequences and trondhjemitic complexes on Bømlo
(Master thesis, 2021-10-01)Single zircon U/Pb dating, geochemistry, and field descriptions from trondhjemitic and tonalitic intrusions, intruding the Lykling Ophiolite Complex, provide new insights into the origin and evolution of the Early Ordovician ... -
THE GEOMETRY AND TOPOLOGY OF DEFORMATION BAND NETWORKS IN VOLCANICLASTIC ROCKS: A CASE STUDY FROM SHIHTIPING, SOUTH-EASTERN TAIWAN
(Master thesis, 2021-03-05)Deformation bands are tabular strain localization features, common in porous and granular rocks. These structures of millimeter to centimeter thickness can occur as single bands and develop into clusters or networks of ... -
The importance of mineralogy in the formation of polygonal fault systems in the North Sea
(Master thesis, 2023-06-01) -
The Molloy Oceanic Core Complex: Petrological Studies of Mantle Rocks
(Master thesis, 2024-06-03)Seafloor spreading at ultraslow spreading rates causes uplift of the underlying crustal structure and mantle, forming oceanic core complexes (OCC). At the edge of the perennial Arctic sea ice cover, the Fram Strait forms ... -
The propagation, interaction and linkage of vein segments and the scatter of geometric data
(Master thesis, 2019-06-28)The lengths, widths, orientations, bridge widths and linkage characteristics of 636 vein segments from 84 arrays have been measured and analysed. The relationships between the parameters are assessed. The veins are in the ... -
The spatial-temporal geomorphology of meandering river channels in distributive fluvial systems
(Master thesis, 2019-06-28) -
The topographic evolution of post-Caledonian landscapes in the inner Nordfjord, SW-Norway | New insights from AFT dating and thermal history modelling
(Master thesis, 2021-08-24)The topographic evolution of the present-day mountains of western Norway is not completely resolved. Long after the breakup of the Caledonides, the mountains along the passive continental margin of Norway remain high, with ... -
A theoretical approach to glacier equilibrium-line altitudes using meteorological data and glacier massbalance
(Peer reviewed; Journal article, 2003-05-01)Based on a close exponential relationship between mean ablation-season temperature and winter precipitation at the equilibrium-line altitude (ELA) of 10 Norwegian glaciers, three equations are derived. The first equation ... -
Theoretical equilibrium-line altitudes and glacier buildup sensitivity in southern Norway based on meteorological data in a geographical information system
(Peer reviewed; Journal article, 2003-05-01)Three equations derived from a close exponential glacier-climate relationship at the equilibrium-line altitude (ELA) of Norwegian glaciers have been utilized and implemented in a geographical information system (GIS). The ... -
A Three-Field Formulation for Two-Phase Flow in Geodynamic Modeling: Toward the Zero-Porosity Limit
(Journal article; Peer reviewed, 2024)Two-phase flow, a system where Stokes flow and Darcy flow are coupled, is of great importance in the Earth's interior, such as in subduction zones, mid-ocean ridges, and hotspots. However, it remains challenging to solve ... -
Time-lapse full waveform inversion in strongly scattering media
(Master thesis, 2019-06-25)In petroleum seismology, full waveform inversion (FWI) is known as a powerful method taking into account all available in seismic data information with which one can determine a high-resolution subsurface image. In time-lapse ... -
Time-lapse techniques for surface velocity, front position and calving rate measurement of a fast-flowing tidewater glacier in Svalbard
(Master thesis, 2015-05-31)Calving is the mechanical loss of icebergs from tidewater glaciers, responsible for 70% of the annual transfer of mass from the cryosphere to the ocean (van der Veen 1998a, 2002). To be able to correctly predict future ... -
TimeseriesSurrogates.jl: a Julia package for generating surrogate data
(Journal article; Peer reviewed, 2022) -
The timing of deglaciation and the sequence of pioneer vegetation at Ringsaker, eastern Norway – and an earthquake-triggered landslide
(Peer reviewed; Journal article, 2018)We describe a sediment sequence comprising a thick till covered by thin beds of lacustrine sediments containing pollen and plant macrofossils derived from pioneer vegetation. Four consistent radiocarbon dates on terrestrial ...