Browsing Department of Earth Science by Title
Now showing items 717-736 of 1211
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A new tectono-magmatic model for the Lofoten/Vesterålen Margin at the outer limit of the Iceland Plume influence
(Peer reviewed; Journal article, 2017-10)The Early Eocene continental breakup was magma-rich and formed part of the North Atlantic Igneous Province. Extrusive and intrusive magmatism was abundant on the continental side, and a thick oceanic crust was produced up ... -
Nitrite accumulation and anammox bacterial niche partitioning in Arctic Mid-Ocean Ridge sediments
(Journal article; Peer reviewed, 2023)By consuming ammonium and nitrite, anammox bacteria form an important functional guild in nitrogen cycling in many environments, including marine sediments. However, their distribution and impact on the important substrate ... -
Non-linear retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry
(Journal article, 2017-09)Rapid acceleration and retreat of Greenland's marine-terminating glaciers during the last two decades have initiated questions on the trigger and processes governing observed changes. Destabilization of these glaciers ... -
Normal fault growth and fault zone architecture of normal faults exposed in the Corinth Canal, central Greece
(Master thesis, 2016-08-22)The Corinth Canal in central Greece consists of an excellent natural transect across a population of normal faults. This study presents a structural analysis of 23 exposed faults, focusing on fault geometry, fault zone ... -
Normal Fault Kinematics and the Role of Lateral Tip Retreat: An Example From Offshore NW Australia
(Journal article; Peer reviewed, 2021)Understanding how normal faults grow is key to determining the tectono-stratigraphic evolution of rifts. According to recent studies, normal faults tend to grow in two temporally distinct stages: a lengthening stage, ... -
North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming
(Journal article; Peer reviewed, 2023)Quantitative reconstructions of hydrological change during ancient greenhouse warming events provide valuable insight into warmer-than-modern hydrological cycles but are limited by paleoclimate proxy uncertainties. We ... -
Northeast Atlantic breakup volcanism and consequences for Paleogene climate change – MagellanPlus Workshop report
(Peer reviewed; Journal article, 2019-12-02)The northeast Atlantic encompasses archetypal examples of volcanic rifted margins. Twenty-five years after the last ODP (Ocean Drilling Program) leg on these volcanic margins, the reasons for excess melting are still ... -
Northern hemisphere glaciation during the globally warm early late Pliocene
(Peer reviewed; Journal article, 2013-12-12)The early Late Pliocene (3.6 to ,3.0 million years ago) is the last extended interval in Earth’s history when atmospheric CO2 concentrations were comparable to today’s and global climate was warmer. Yet a severe global ... -
Northward shifts in the polar front preceded Bølling and Holocene warming in southwestern Scandinavia
(Journal article; Peer reviewed, 2020)The last deglaciation in northern Europe provides an opportunity to study the hydrologic component of abrupt climate shifts in a region with complex interactions between ice sheets and oceanic and atmospheric circulation. ... -
Norwegian margin outer shelf cracking: a consequence of climate-induced gas hydrate dissociation?
(Peer reviewed; Journal article, 2010)A series of en echelon cracks run nearly parallel to the outer shelf edge of the mid-Norwegian margin. The features can be followed in a *60-km-long and *5-km-wide zone in which up to 10-m-deep cracks developed in the ... -
Numerical quantification of inheritance in 10Be surface exposure dating of rock avalanche deposits: a case study of the Hølen rock avalanche, northern Norway
(Master thesis, 2024-06-03)Nedarvet kosmogene nuklider er en velkjent, men ofte utelatt usikkerhet når 10Be overflatedatering brukes for a datere fjellskredavsetninger på grunn av hvor utfordrende det kan være å kvantifisere denne usikkerheten. Hvis ... -
Numerical simulation of turbidity currents: a new perspective for small- and large-scale sedimentological experiments
(Master thesis, 2007)Turbidity currents are a variety of subaqueous sediment-gravity flows, in which the suspension of sediment by water turbulence produces a water-sediment mixture that is denser than the ambient water and hence flows due to ... -
Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil
(Journal article; Peer reviewed, 2022)Background Subarctic regions are particularly vulnerable to climate change, yet little is known about nutrient availability and biodiversity of their cave ecosystems. Such knowledge is crucial for predicting the vulnerability ... -
Observation of Greenland Ice Velocities and Impact of Surface Melt
(Doctoral thesis, 2023-06-14)Isbreer beveger seg og isdynamikken kontrolleres av mange prosesser. I dette arbeidet fokuserer vi spesielt på basalglidning, eller glidning mot underlaget. Basalglidning er interessant å studere fordi grønlandsisen mister ... -
Observing system evaluation based on ocean data assimilation and prediction systems: On-going challenges and future vision for designing/supporting ocean observational networks
(Peer reviewed; Journal article, 2019-07-29)This paper summarizes recent efforts on Observing System Evaluation (OS-Eval) by the Ocean Data Assimilation and Prediction (ODAP) communities such as GODAE OceanView and CLIVAR-GSOP. It provides some examples of existing ... -
Ocean circulation changes off southern Greenland during the abrupt climate events of mid-to-late MIS3
(Doctoral thesis, 2021-03-18)Marine sediment cores from the North Atlantic and ice cores from the Greenland Ice Sheet serve as natural archives of past climate variability. Ice cores have revealed that during the last glacial period the climate comprises ... -
An oceanic perspective on Greenland’s recent freshwater discharge since 1850
(Journal article; Peer reviewed, 2019)Instrumental data evidence an accelerating freshwater release from Arctic sea ice export and the Greenland Ice Sheet over the past three decades causing cooling and freshening in the subpolar North Atlantic region. However, ... -
Ocean–Ice Sheet Coupling in the Totten Glacier Area, East Antarctica: Analysis of the Feedbacks and Their Response to a Sudden Ocean Warming
(Journal article; Peer reviewed, 2023-04-01)We coupled together high-resolution versions of the ocean–sea ice model NEMO and the ice sheet model BISICLES configured to the Totten Glacier area and ran a series of simulations over the recent past (1995–2014) and under ... -
On how the power supply shapes microbial survival
(Journal article; Peer reviewed, 2021)Understanding how environmental factors affect microbial survival is an important open problem in microbial ecology. Patterns of microbial community structure have been characterized across a wide range of different ...