Browsing Department of Earth Science by Title
Now showing items 186-205 of 1242
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Dansgaard-Oeschger and Heinrich event temperature anomalies in the North Atlantic set by sea ice, frontal position and thermocline structure
(Journal article; Peer reviewed, 2022)We use eighteen timescale-synchronised near-surface temperature reconstructions spanning 10–50 thousand years before present to clarify the regional expression of Dansgaard-Oeschger (D-O) and Heinrich (H) events in the ... -
Dansgaard-Oeschger cycles: Interactions between ocean and sea ice intrinsic to the Nordic seas
(Peer reviewed; Journal article, 2013-09)Dansgaard-Oeschger (D-O) cycles are the most dramatic, frequent, and wide-reaching abrupt climate changes in the geologic record. On Greenland, D-O cycles are characterized by an abrupt warming of 10 ± 5°C from a cold ... -
Dansgaard–Oeschger events in climate models: review and baseline Marine Isotope Stage 3 (MIS3) protocol
(Journal article; Peer reviewed, 2023)Dansgaard–Oeschger (D–O) events, millennial-scale climate oscillations between stadial and interstadial conditions (of up to 10–15 ∘C in amplitude at high northern latitudes), occurred throughout the Marine Isotope Stage ... -
Data integration and FAIR data management in Solid Earth Science
(Journal article; Peer reviewed, 2022)Integrated use of multidisciplinary data is nowadays a recognized trend in scientific research, in particular in the domain of solid Earth science where the understanding of a physical process is improved and made complete ... -
Deciphering the metamorphic framework of ophiolite alteration and devolatilization at Linnajarvi, N-Norway
(Master thesis, 2021-12-01)Kvitfjell ultramafic body is one of around 20 ultramafic bodies found in the Linnajavri area of Northern Norway. These ultramafic fragments are situated within the Köli Nappe of the Upper Allochthon in the Caledonian ... -
Deep Crustal Flow Within Postorogenic Metamorphic Core Complexes: Insights From the Southern Western Gneiss Region of Norway
(Peer reviewed; Journal article, 2019)Viscous crustal flow can exhume once deeply buried rocks in postorogenic metamorphic core complexes (MCCs). While migmatite domes record the flow dynamics of anatectic crust, the mechanics and kinematics of solid‐state ... -
Deep sea sedimentary analogs for the Vostok ice core
(Peer reviewed; Journal article, 2003-08-07)Many applications of the Vostok ice core depend critically on the ability to make stratigraphic ties to marine records in the adjacent Southern Ocean. Here we present oxygen isotopic records from high accumulation rate ... -
Deep submarine infiltration of altered geothermal groundwater on the south Chilean Margin
(Journal article; Peer reviewed, 2022)Submarine groundwater discharge is increasingly recognized as an important component of the oceanic geochemical budget, but knowledge of the distribution of this phenomenon is limited. To date, reports of meteoric inputs ... -
Deep-ocean circulation in the North Atlantic during the Plio-Pleistocene intensification of Northern Hemisphere Glaciation (~2.65–2.4 Ma)
(Journal article; Peer reviewed, 2021)Through transporting heat around the world and thereby regulating global climate, ocean circulation is an integral part of Earth's climate system that likely changed substantially on glacial-interglacial timescales in the ... -
Deep-water sand transfer by hyperpycnal flows, the Eocene of Spitsbergen, Arctic Norway
(Journal article; Peer reviewed, 2023)Flood-generated hyperpycnal flows are dense, sediment-laden, turbulent flows that can form long-lived, bottom-hugging turbidity currents, which undoubtedly transport large volumes of fine-grained sediments into the ocean. ... -
Deep-water sediment transport patterns and basin floortopography in early rift basins: Plio-Pleistocene syn-rift of theCorinth Rift, Greece
(Peer reviewed; Journal article, 2019)Our current understanding on sedimentary deep‐water environments is mainly built of information obtained from tectonic settings such as passive margins and foreland basins. More observations from extensional settings are ... -
Deep-water sinuous channels: their development and architecture
(Doctoral thesis, 2011-12-02)The study combines an interpretation of 3D seismic and well-core dataset with laboratory experiments, process-based 3D numerical simulations and analysis of outcrop analogues to explore the varied architecture and formative ... -
Deep-water syn-rift stratigraphy as archives of Early-Mid Pleistocene palaeoenvironmental signals and controls on sediment delivery
(Journal article; Peer reviewed, 2021)The timing and character of coarse siliciclastic sediment delivered to deep-water environments in active rift basins is governed by the complicated interactions of tectonics, climate, eustasy, hinterland geology, and shelf ... -
The DeepMIP contribution to PMIP4: methodologies for selection, compilation and analysis of latest Paleocene and early Eocene climate proxy data, incorporating version 0.1 of the DeepMIP database
(Peer reviewed; Journal article, 2019-07-25)The early Eocene (56 to 48 million years ago) is inferred to have been the most recent time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Global mean temperatures were also substantially warmer than those ... -
Deformation bands in chalk - control on distribution and mechanism of formation
(Master thesis, 2016-06-01)Deformation bands are narrow tabular zones that accommodates strain through the reorganization of grains by shearing and/or volumetric deformation in porous and granular rocks. Deformation bands in porous sandstones are ... -
Deformation bands in porous sandstones, their microstructure and petrophysical properties
(Doctoral thesis, 2008-02-27)Deformation bands are commonly thin tabular zones of crushed or reorganized grains that form in highly porous rocks and sediments. Unlike a fault, typically the slip is negligible in deformation bands. In this dissertation ... -
Deformation of sandstone reservoirs. Insight from experiments and field studies
(Doctoral thesis, 2014-09-18) -
Deghosting dual-component streamer data using demigration-based supervised learning
(Journal article; Peer reviewed, 2024)Ghost reflections from the free surface distort the source signature and generate notches in the seismic amplitude spectrum. For this reason, removing ghost reflections is essential to improve the bandwidth and signal-to-noise ... -
Deglacial changes in western Atlantic sea surface temperatures and ice sheet variability
(Master thesis, 2023-04-11)