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Now showing items 501-556 of 556
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Raman elastic thermobarometry has recently been applied in many petrological studies to recover the pressure and temperature (P–T) conditions of mineral inclusion entrapment. Existing modelling methods in petrology either ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
We studied the geometry and petrophysical properties of fault core and damage zones of a deformation band fault zone in the arkosic sandstones of the Cretaceous Antenor Navarro Formation in the Rio do Peixe Basin, Brazil. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The Devonian record presents an opportunity to test and validate an existing marine bioregionalization. This study is the first to use comparative biogeography and phylogenetic data to test Devonian bioregionalization. ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
Oxia Planum is a Noachian plain on Mars. It was chosen as the final landing site for in situ studies by ExoMars 2022 rover. The main scientific objectives of the mission are to understand the mineralogy and aqueous evolution ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Seismic migration commonly yields an incomplete reconstruction of the Earth model due to restricted survey aperture, band-limited frequency content, and propagation effects. This affects both illumination and resolution ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Authigenic quartz grains carry information that is diagnostic for the thermal history and thereby the burial depth and uplift of sediments. Recycled quartz grains with embayed or rounded authigenic remnants have been ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
While reliable drought prediction is fundamental for drought mitigation and water resources management, it is still a challenge to develop robust drought prediction models due to complex local hydro-climatic conditions and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
We explore the mantle density structure of the northeast Atlantic region using constrained linear inversion of the satellite gravity gradient data based on statistical prior information and assuming a Gaussian model. The ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Abstract
Equilibrium climate sensitivity (ECS) and transient climate response (TCR) are both measures of the sensitivity of the climate system to external forcing, in terms of temperature response to CO 2 doubling. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Ice marginal lakes are a dynamic component of terrestrial meltwater storage at the margin of the Greenland Ice Sheet. Despite their significance to the sea level budget, local flood hazards and bigeochemical fluxes, there ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Contractional deformation of passive continental margins may resemble early stages of induced subduction initiation. Mechanical instabilities are required to permit underthrusting of the oceanic plate. Therefore, the success ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The Mediterranean is an area where the balance between water demand and abstractions vs. water availability is often under stress already, as demonstrated here with the Water Exploitation Index. In this work, model estimates ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
Thick (>100 m-thick), highly bioturbated storm-influenced shallow-marine deposits are not frequent in the stratigraphic record, but they tend to be common in aggradational to retrogradational successions. Individual ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
It is crucial to investigate how a precipitation deficit is transformed into hydrological drought and how climate change and human activities affect this transformation process, which is helpful to gain a deep understanding ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Abstract Declining atmospheric CO 2 concentrations are considered the primary driver for the Cenozoic Greenhouse-Icehouse transition, ~34 million years ago. A role for tectonically opening Southern Ocean gateways, initiating ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Satellite-based long-term observations of vegetation cover development in combination with recent in-situ observations provide a basis to better understand the spatio-temporal changes of vegetation patterns, their sensitivity ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Abstract All models of the magmatic and plate tectonic processes that create continental crust predict the presence of a mafic lower crust. Earlier proposed crustal doubling in Tibet and the Himalayas by underthrusting of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The Greenland Ice Sheet (GrIS) will be losing mass at an accelerating pace throughout the 21st century, with a direct link between anthropogenic greenhouse gas emissions and the magnitude of Greenland mass loss. Currently, ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
Sediment load is a critical issue in hydrologic process analysis and river basin management. Many studies have analyzed the impacts of rainfall or reservoir separately on the downstream sediment load; however, few researches ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Infrastructure built on perennially frozen ice-rich ground relies heavily on thermally stable subsurface conditions. Climate-warming-induced deepening of ground thaw puts such infrastructure at risk of failure. For better ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Submarine landslides can be several orders of magnitude larger than their terrestrial counterparts and can pose significant hazards across entire ocean basins. The landslide failure mechanism strongly controls the associated ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
Merging gauge observation with a single original satellite-based precipitation product (SPP) is a common approach to generate spatial precipitation estimates. For the generation of high-quality precipitation maps, however, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Faults in carbonate rocks show both seismic and aseismic deformation processes, leading to a wide range of slip velocities. We deformed two centimeter‐scale cores of Carrara marble at 25°C and imaged the nucleation and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
We have studied damage zones of two active faults, Baza and Padul faults in Guadix-Baza and Granada basins, respectively, in South Spain. Mineral and microstructural characterization by X-ray diffraction and field emission ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The FLUXNET2015 dataset provides ecosystem-scale data on CO2, water, and energy exchange between the biosphere and the atmosphere, and other meteorological and biological measurements, from 212 sites around the globe (over ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
In north-western Europe, the common tick, Ixodes ricinus, is widely established, its distribution appears to be increasing and the spread of tick-borne diseases is of increasing concern. The project ‘Flått i Nord’ (Ticks ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract
Lake Malawi in south eastern Africa is a very important freshwater system for the socio-economic development of the riparian countries and communities. The lake has however experienced considerable recession ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract
Both flood magnitude and frequency might change under the changing environment. In this study, a procedure combining statistical methods, flood frequency analysis and attribution analysis was proposed ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The tropical tropopause layer (TTL) is the transition region between the well-mixed convective troposphere and the radiatively controlled stratosphere with air masses showing chemical and dynamical properties of both ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The volume of glaciers in Iceland (∼3,400 km3 in 2019) corresponds to about 9 mm of potential global sea level rise. In this study, observations from 98.7% of glacier covered areas in Iceland (in 2019) are used to construct ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The Spanish Central System (SCS) contains several suites of Palaeozoic mafic igneous intrusions with contrasting geochemical affinity: Ordovician tholeiitic metabasites, Variscan calc-alkaline gabbros (Gb1) and microdiorites ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract
Accurate long-term inflow forecasts are essential for optimal planning of hydropower production. In snow-rich regions, where spring snowmelt is often the largest reservoir of water, inflow forecasts may ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
It is fundamentally challenging to quantify the uncertainty of data-driven flood forecasting. This study introduces a general framework for probabilistic flood forecasting conditional on point forecasts. We adopt an unscented ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Carbon capture and storage (CCS) would contribute considerably towards climate change mitigation, if it would be implemented on a very large scale; at many storage sites with substantial injection rates. Achieving high ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
This paper reviews and analyses the past 20 years of change and variability of European mountain permafrost in response to climate change based on time series of ground temperatures along a south–north transect of deep ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The Paleocene-Eocene Thermal Maximum (PETM; ∼55.9 Ma) was a hyperthermal event associated with large carbon cycle perturbations, sustained global warming, and marine and terrestrial environmental changes. One possible ...
Modeled Microbial Dynamics Explain the Apparent Temperature Sensitivity of Wetland Methane Emissions
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Methane emissions from natural wetlands tend to increase with temperature and therefore may lead to a positive feedback under future climate change. However, their temperature response includes confounding factors and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Mouth bars are the fundamental architectural elements of proximal deltaic successions. Understanding their internal architecture and complex interaction with coastal processes (fluvial, tide and wave‐dominated) is paramount ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract. Snow cornices develop along mountain ridges, edges of plateaus, and marked inflections in topography throughout regions with seasonal and permanent snow cover. Despite the recognized hazard posed by cornices in ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Third year geoscience students were introduced to digital tools for fieldwork, Fieldmove on iPads, in a capstone field mapping course at Oslo University, Norway. Despite little prior experience with digital tools for ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
Seismic exploration in complex geologic settings and shallow geologic targets has led to a demand for higher spatial and temporal resolution in the final migrated image. Conventional marine seismic and wide-azimuth data ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Permafrost is present within almost all of the Antarctic's ice-free areas, but little is known about spatial variations in permafrost temperatures except for a few areas with established ground temperature measurements. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Coffinite (USiO4) and thorite (ThSiO4) are conspicuous radiogenic silicates in the geonomy. They form U1−xThxSiO4 (uranothorite) solid solutions in zircon-type phase. Investigating the phase-evolution of these minerals is ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The seasonal snow-cover is one of the most rapidly varying natural surface features on Earth. It strongly modulates the terrestrial water, energy, and carbon balance. Fractional snow-covered area (fSCA) is an essential ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Relationship between different geomechanical and acoustic properties measured from seven laboratory tested unconsolidated natural sands with different mineralogical compositions and textures were presented. The samples ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract
There has been a surge of interest in the field of urban flooding in recent years. However, current stormwater management models are often too complex to apply on a large scale. To fill this gap, we use ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Energetic particle precipitation is one of the main processes by which the sun influences atmospheric composition and structure. The polar middle atmosphere is chemically disturbed by the precipitation-induced production ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
Chalcopyrite (CuFeS2) is the primary ore mineral for copper, but leaching of this mineral under atmospheric conditions is slow due to the formation of surface passivating phases such as elemental sulphur and jarosite. Here, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Depleted oil reservoirs are considered a viable solution to the global challenge of CO2 storage. A key concern is whether the wells can be suitably sealed with cement to hinder the escape of CO2. Under reservoir conditions, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
MgO makes up about 20% of the Earth’s lower mantle; hence, its rheological behaviour is important for the dynamics and evolution of the Earth. Here, we investigate the strength of twin boundaries from 0 to 120 GPa using ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
During the past decades, notions of Earth dynamics and climate change have changed drastically, as anthropogenic CO2-emissions are linked to measurable Earth system changes. At the same time, Earth scientists have discovered ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A transition from supradetachment to rift basin signature is recorded in the ~1,500 m thick succession of continental to shallow marine conglomerates, mixed carbonate‐siliciclastic shallow marine sediments and carbonate ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
As the Arctic warms, vegetation is responding, and satellite measures indicate widespread greening at high latitudes. This ‘greening of the Arctic’ is among the world’s most important large-scale ecological responses to ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
The multi-model combination is a technique to improve the performances of hydrological streamflow simulations. An area that has not been investigated much is the performance dependence of combination techniques on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The Draupne Formation is the most important source and cap rock for North Sea hydrocarbon plays. It also provides the primary seal for potential CO2 storage on the Norwegian Continental Shelf, but it has been a concern ...