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Showing 4951 to 5000 of 5157 works

Relict topography within the Hangay Mountains in central Mongolia: Quantifying long-term exhumation and relief change i…

The Hangay Mountains are a high-elevation, low-relief landscape within the greater Mongolian Plateau of central Asia. New bedrock apatite (U-Th)/He single-grain ages from the Hang…

Cenozoic tectonics of the Tuz Gölü Basin (Central Anatolian Plateau, Turkey)

We present a new 3D geologic model for the architecture and Cenozoic tectonic evolution of the Tuz Gölü Basin, a major sedimentary basin in the Central Anatolian orogenic plateau.…

Climate-driven unsteady denudation and sediment flux in a high-relief unglaciated catchment-fan using 26Al and 10Be: Pa…

Environmental changes within erosional catchments of sediment routing systems are predicted to modulate sediment transfer dynamics. However, empirical and numerical models that pr…

A consistent global approach for morphometric characterisation of subaqueous landslides

Landslides are common in aquatic settings worldwide, from lakes and coastal environments to the deep-sea. Fast-moving, large volume landslides can potentially trigger destructive …

Exploring carbonate reef flat hydrodynamics and potential formation and growth mechanisms for motu

Atolls, which develop as reef-building coral platforms extend to near sea level, typically consist of a shallow reef flat encircling a central lagoon. Often, sub-aerial islets, kn…

The effect of meteoric phreatic diagenesis and spring sapping on the formation of submarine collapse structures in the …

The islands of Biak and Supiori, situated in the Bird’s Head region of New Guinea, comprise predominantly Neogene age carbonate units that extend offshore into the adjacent Biak B…

Local and Remote Influences on the Heat Content of the Labrador Sea: an Adjoint Sensitivity Study

The Labrador Sea is one of the few regions on the planet where the interior ocean can exchange heat directly with the atmosphere via strong, localized, wintertime convection, with…

Upscaling permeability in anisotropic volcanic systems

Permeability is an increasingly prevalent metric included in volcano modelling; however, it is a property that can exhibit anisotropy in volcanic environments. Permeability of a l…

Leaf trait acclimation amplifies simulated climate warming in response to elevated carbon dioxide

Vegetation modifies Earth’s climate by controlling the fluxes of energy, carbon, and water. Of critical importance is a better understanding of how vegetation responses to climate…

Linked Geoscience Data in practice: Where W3C standards meet domain knowledge, data visualization and OGC standards

The geoscience community is now facing both the challenge and the opportunity caused by the vast amount of datasets that can be made available on the Web. An efficient “data envir…

Moisture balance over the Iberian Peninsula according to a regional climate model: The impact of 3DVAR data assimilatio…

An analysis of the atmospheric branch of the hydrological cycle by means of a 15 km resolution numerical integration performed using WRF nested in ERA Interim is presented. Two W…

River Restoration Design Framework

This preprint provides a design framework for river restoration and enhancement efforts. The preprint will be of interest to watershed stakeholder groups, jurisdictional permittin…

Protected Places: A Survey of Laws on Archaeological Site and Cave Location Confidentiality and Their Potential Impact …

Librarians who work with maps and other forms of spatial information are often asked for information about the location of a place. These questions can range from the location of …

Microstructural controls on the pressure-dependent permeability of Whitby Mudstone

A combination of permeability and ultrasonic velocity measurements allied with image analysis is used to distinguish the primary microstructural controls on effective-pressure dep…

Frontal and lateral submarine lobe fringes: Comparing sedimentary facies, architecture and flow processes

Submarine lobe fringe deposits form heterolithic successions that may include a high proportion of hybrid beds. The identification of lobe fringe successions aids interpretation o…

Analysis of miscellaneous non-ambergris organic jetsam beach deposits

The analysis of a number of ad hoc samples of organic beach jetsam by Fourier transform infrared spectroscopy (FTIR), gas chromatography (GC), high temperature GC (HTGC), GC-mass …

Estimating regional flood discharge during Palaeocene-Eocene global warming (submitted)

Among the most urgent challenges in future climate change scenarios is accurately predicting the magnitude at which precipitation extremes will intensify. Analogous changes have b…

Communicating Unnatural Disasters

Off the back of the 2017 hurricanes we extend the notion of human-influenced meteo-hydro hazards to include deeper geophysical events. We question where to place Human responsibil…

Submarine salt dissolution in the Santos Basin, offshore Brazil

Salt dissolution occurs when evaporite-dominated rocks come into contact with NaCl-undersaturated fluids. Salt dissolution can positivity and negatively impact hydrocarbon and min…

Introduction to Geochronology

These lecture notes cover the first half of an Isotope Geology module at University College London that deals with the geochronological aspects of the subject. The notes introduce…

Geometry and Kinematics of Salt-detached Ramp Syncline Basins

Ramp-syncline basins (RSBs) are characterized by asymmetric depocentres that form by translation above flat-ramp extensional faults or salt detachments having basal steps. Both ty…

The role of glacier retreat for Swiss hydropower production

High elevation or high latitude hydropower production (HP) strongly relies on water resources that are influenced by glacier melt and are thus highly sensitive to climate warming.…

Topographic modulation of fault kinematics in the Himalaya and Tibet

In many locations in the Himalaya and Tibet, extensional stepovers on strike-slip faults occur beneath pre-existing topographic highs. An influential physical model of orogens, ex…

Exogenic forcing and autogenic processes on continental divide location and mobility -- preprint

The position and mobility of drainage divides is an expression of exogenic landscape forcing and autogenic channel network processes integrated across a range of scales. At the la…

Slope-fan depositional architecture from high-resolution forward stratigraphic models

Submarine fans in tectonically active continental-slope basins are targets of petroleum exploration and production. These slope fans commonly comprise compensationally stacked san…

Lake sediment records of persistent organic pollutants and polycyclic aromatic hydrocarbons in Southern Siberia mirror …

Persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) have previously been detected in the surface sediments, water, and endemic organisms of Lake Baika…

The joint influence of break and noise variance on the break detection capability in time series homogenization

Instrumental climate records of the last centuries suffer from multiple breaks due to relocations and changes in measurement techniques. These breaks are detected by relative homo…

Recycling of archaeal biomass as a new strategy for extreme life in Dead Sea deep sediments

Archaea and Bacteria that inhabit the deep subsurface (known as the deep biosphere) play a prevalent role in the recycling of sedimentary organic carbon. In such environments, thi…

The influence of community recommendations on metadata completeness

Many communities use standard, structured documentation that is machine-readable, i.e. metadata, to make discovery, access, use, and understanding of scientific datasets possible.…

The spectrum of slip behaviours of a granular fault gouge analogue governed by rate and state friction.

The exact principles of earthquake recurrence and magnitude are currently unknown which is why earthquake hazard assessment relies on statistical models combined with numerical si…

The Apparent Stratification at the Top of Earths Liquid Core

Earths magnetic field is generated by turbulent motion in its fluid outer core. Although the bulk of the outer core is vigorously convecting and well-mixed, some seismic, geomagne…

Stratigraphic modeling of the Western Taiwan foreland basin: sediment flux from a growing mountain range and tectonic i…

Sediment flux signals in foreland basins preserve a record of tectonics, sea level and climate through erosion and sedimentation. However, longitudinal sediment transport often oc…

Optimising tidal range power plant operation

Tidal range power plants represent an attractive approach for the large-scale generation of electricity from the marine environment. Even though the tides and by extension the ava…

Gender Representation of Speaking Opportunities at the American Geophysical Union Fall Meeting

Implicit and explicit biases impede the participation of women in geoscience. Documented biases include the quality of postdoctoral recommendation letters and opportunities to rev…

Criteria and Tools for Determining Drainage Divide Stability

Watersheds are the fundamental organizing units in landscapes and thus the controls on drainage divide location and mobility are an essential facet of landscape evolution. Additio…

Structural signatures of igneous sheet intrusion propagation

The geometry and distribution of planar igneous bodies (i.e. sheet intrusions), such as dykes, sills, and inclined sheets, has long been used to determine emplacement mechanics, d…

Multiphase flow characteristics of heterogeneous rocks from CO2 storage reservoirs in the United Kingdom

We have studied the impact of heterogeneity on relative permeability and residual trapping for rock samples from the Bunter sandstone of the UK Southern North Sea, the Ormskirk Sa…

Tropical cyclones shift poleward more over Land than over Ocean

The latitudes of all Northern Hemisphere tropical cyclones (TCs) from the National Hurricane Center (NHC)/Joint Typhoon Warning Center (JTWC) best track data are used to investiga…

Characterising Drainage Multiphase Flow in Heterogeneous Sandstones

In this work, we analyse the characterisation of drainage multiphase flow properties on heterogeneous rock cores using a rich experimental dataset and mm-m scale numerical simulat…

Inverse analysis to reconstruct hydraulic conditions of non-steady turbidity currents based on multiple grain-size clas…

This study proposes a new method of inverse analysis of ancient turbidites to represent non-steady turbidity currents and account for multiple grain-size classes. The forward mode…

Neogene - Quaternary slow coastal uplift of Western Europe through the perspective of sequences of strandlines from the…

The Cotentin Peninsula (Normandy, France) displays sequences of marine terraces and rasas, the latter being wide Late Cenozoic coastal erosion surfaces, that are typical of Wester…

Subsurface expression of a tertiary salt weld, Gulf of Mexico

Salt welds form due to salt expulsion and thinning by mechanical (e.g. salt flow) and/or chemical (e.g. salt dissolution) processes. Despite being ubiquitous in salt-bearing sedim…

Types of mixing and heterogeneities in siliciclastic-carbonate sediments

Mixed siliciclastic-carbonate deposits consist of a suite of different types of mixing between the two components, from bed (core-plug) to stratigraphic (seismic) scales, producin…

Kinematics of Polygonal Fault Systems: Observations from the Northern North Sea

Layer-bound, low-displacement normal faults, arranged into a broadly polygonal pattern, are common in many sedimentary basins. Despite having constrained their gross geometry, we …

Non-crossing nonlinear regression quantiles by monotone composite quantile regression neural network, with application …

The goal of quantile regression is to estimate conditional quantiles for specified values of quantile probability using linear or nonlinear regression equations. These estimates a…

Synchronization of great subduction megathrust earthquakes: Insights from scale model analysis

The size of great subduction megathrust earthquakes is controlled mainly by the number of adjacent asperities failing synchronously and the resulting rupture length. Here we inves…

The crisis of a paradigm. A methodological interpretation of Tohoku and Fukushima catastrophe

The 2011 Japanese disaster often presented as a ‘new Chernobyl’ accumulated the effects of earthquake, tsunami and of the subsequent nuclear accident at Fukushima. In the light of…

Estimating geological CO2 storage security to deliver on climate mitigation

Carbon capture and storage (CCS) can help nations meet their Paris CO2 reduction commitments cost-effectively. However, lack of confidence in geologic CO2 storage security remains…

Visions of Volcanoes

The long nineteenth century marked an important transition in the understanding of the nature of combustion and fire, and of volcanoes and the interior of the earth. It was also a…

Ice shelf rift propagation and the mechanics of wave-induced fracture

Distant storms, tsunamis, and earthquakes generate waves on floating ice shelves. Previous studies, however, have disagreed about whether the resulting wave-induced stresses may …

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