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Showing 58201 to 58250 of 59105 works

Selection of hydrological signatures for large-sample hydrology

Hydrological signatures are now used for a wide range of purposes, including catchment classification, process exploration and hydrological model calibration. The recent boost in …

Overview to the Regional Thrust Wedge Tectonics in Indonesia: Similarities and Differences in Orogenic Belts

Overview to the regional thrust wedge tectonics in Indonesia attempts to compile and review geologic settings related to the development of compressive structures. Comprehensive o…

Distributions of geohopanoids in peat: implications for the use of hopanoid-based proxies in natural archives

Hopanoids are pentacyclic triterpenoids produced by a wide range of bacteria. Within modern settings, hopanoids mostly occur in the biological 17β,21β(H) configuration. However, i…

An estimate of equilibrium climate sensitivity from interannual variability

Estimating the equilibrium climate sensitivity (ECS; the equilibrium warming in response to a doubling of CO2) from observations is one of the big problems in climate science. Usi…

Description of the COST - HOME monthly benchmark dataset and the submitted homogenized contributions

As part of the COST Action HOME a dataset has been generated that will serve as a benchmark for homogenisation algorithms. Members of the Action and third parties have been invite…

Groundwater pumping impacts on real stream networks: testing the performance of simple management tools

Quantifying reductions in streamflow due to groundwater pumping (‘streamflow depletion’) is essential for conjunctive management of groundwater and surface water resources. Analyt…

The stratigraphy and eruptive history of the Palaeogene Arran Volcanic Formation, western Scotland: a proximal record o…

Caldera-forming volcanic eruptions are among the most dangerous, and can generate extensive pyroclastic deposits and deliver ash into global atmospheric circulation systems. As ca…

Rift-related magmatism influences petroleum systems development in the NE Irish Rockall Basin, offshore Ireland

Large volumes of hydrocarbons reside in volcanically influenced sedimentary basins. Despite having a good conceptual understanding of how magmatism impacts the petroleum system of…

Multi-scale segmentation algorithm for pattern-based partitioning of large categorical rasters

Analyzing large Earth Observation (EO) data on the broad spatial scales frequently involves regionalization of patterns. To automate this process we present a segmentation algorit…

Volume And Recurrence of Submarine-Fan-Building Turbidity Currents

(now published in "The Depositional Record") Submarine fans are archives of Earth-surface processes and change, recording information about the turbidity currents that construct …

Facies architecture of submarine channel deposits on the western Niger Delta slope: Implications for grain-size and den…

High-resolution bathymetry, seismic reflection, and piston core data from a submarine channel on the western Niger Delta slope demonstrate that thick, coarse-grained, amalgamated …

High Resolution, Millennial-Scale Patterns of Bed Compensation on a Sand-Rich Intraslope Submarine Fan, Western Niger D…

Near-seafloor core and seismic-reflection data from the western Niger Delta continental slope document the facies, architecture, and evolution of submarine channel and intraslope …

Comparing submarine and fluvial channel kinematics: Implications for stratigraphic architecture

Submarine and fluvial channels exhibit qualitatively similar geomorphic patterns, yet produce very different stratigraphic records. We reconcile these seemingly contradictory obse…

Rapid Adjustment of Submarine Channel Architecture to Changes in Sediment Supply

Changes in sediment supply and caliber during the last ~130 ka have resulted in a complex architectural evolution of the Y channel system on the western Niger Delta slope. This ev…

Climbing Ripple Successions in Turbidite Systems: Depositional Environments, Sedimentation Rates, and Accumulation Times

Climbing-ripple cross-lamination (CRCL) is most commonly deposited by turbidity currents when suspended load fallout and bedload transport occur contemporaneously. The angle of ri…

Impacts of land-use and land-cover change on stream hydrochemistry in the Cerrado and Amazon biomes

Studies on the impacts of land-use and land-cover change on stream hydrochemistry in active deforestation zones of the Amazon agricultural frontier are limited and have often used…

Macrostrat: a platform for geological data integration and deep-time Earth crust research

Characterizing the lithology, age, and physical-chemical properties of rocks and sediments in the Earths upper crust is necessary to fully assess energy, water, and mineral resour…

Detecting orogenic wedge state and the rise of the External Alps by detrital thermochronology

Critical taper theory permits the modelling of an orogenic wedge as a single mechanical entity. However, although shallow-crustal orogens dominated by brittle failure have been su…

The role of H2O on the extraction of melt from crystallising magmas

The segregation and accumulation of felsic melts, from crystallising crustal magma reservoirs, is essential for the chemical evolution of the crust and is a phenomenon preceding s…

Two Fundamentally Different Types of Submarine Canyons Along the Continental Margin of Equatorial Guinea

Most submarine canyons are erosive conduits cut deeply into the world’s continental shelves through which sediment is transported from areas of high coastal sediment supply onto l…

Facies and Architectural Asymmetry in a Conglomerate-Rich Submarine Channel Fill, Cerro Toro Formation, Sierra Del Toro…

Cross-sectional asymmetry is characteristic of sinuous channels, in both fluvial and submarine settings. Less well documented are the facies distributions of asymmetric channels, …

Salt thickness and composition influence rift structural style, northern North Sea, offshore Norway

‘Salt’ giants are typically halite-dominated, although they invariably contain other evaporite (e.g. anhydrite, bittern salts) and non-evaporite (e.g. carbonate, clastic) rocks. R…

Prediction of wave ripple characteristics using genetic programming

We integrate published data sets of field and laboratory experiments of wave ripples and use genetic programming, a machine learning paradigm, in an attempt to develop a universal…

How do normal faults grow?

Normal faults grow via synchronous increase in displacement and length (‘propagating fault model’, also known as the ‘isolated fault model’), or by rapid length establishment and …

Late Paleozoic Iberian orocline(s) and the missing shortening in the core of Pangea. Paleomagnetism from the Iberian Ra…

Supercontinents are usually interpreted to be single and rigid continental plates. How and when Pangea became a rigid supercontinent is disputed, and age estimations vary from ~33…

Drought Conditions Maximize the Impact of High-Frequency Flow Variations on Thermal Regimes and Biogeochemical Function…

Anthropogenic activities, especially dam operations, often induce larger and more frequent stage fluctuations than those occurring in natural rivers. However, long-term impacts of…

Depositional processes, bedform development and hybrid bed formation in rapidly decelerated cohesive (mud–sand) sedimen…

Flows with high suspended sediment concentrations are common in many sedimentary environments, and their flow properties may show a transitional behaviour between fully turbulent …

A phase diagram for turbulent, transitional and laminar clay suspension flows

New phase diagrams for the dynamic structure of clay-laden open-channel flows are proposed. These diagrams can be used to distinguish between turbulent Newtonian, transitional, an…

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.…

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