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Showing 301 to 350 of 5157 works
Basal melting over Subglacial Lake Ellsworth and it catchment: insights from englacial layering
Deep-water ‘stable’ subglacial lakes likely contain microbial life adapted in isolation to extreme environmental conditions. How water is supplied into a subglacial lake, and how …
Comment on Evaristo & McDonnell, Global analysis of streamflow response to forest management
Forests play a key role in the water cycle, so both planting and removing forests can affect streamflow. In a recent Nature article1, Evaristo and McDonnell used a gradient-boost…
Geostatistical characterisation of internal structure of mass-transport deposits from seismic reflection images and bor…
Seismic reflection images of mass-transport deposits often show apparently chaotic, disorded or low-reflectivity internal seismic facies. The lack of laterally coherent reflection…
A practical approach for estimating the escape ratio of near-infrared solar-induced chlorophyll fluorescence
Solar-induced chlorophyll fluorescence (SIF) has emerged as a leading approach for remote sensing of gross primary productivity (GPP). While SIF has an intrinsic, underlying relat…
Using T. C. Chamberlins Approach for Determining the forces that Move the Earths Tectonic Plates
The approach in this paper stems primarily from the application of principles of the philosophy of science to determine if current ideas on the forces of plate tectonics are plau…
Giant meandering channel systems controlled by sediment supply to the deep-water Campos basin
Large meandering submarine-channel systems are important conduits for mass transfer to continental margins; wider and deeper channels, with larger meanders, reflect larger sedimen…
Considering fault interaction in estimates of absolute stress along faults in the San Gorgonio Pass region, southern Ca…
Present-day shear tractions along faults of the San Gorgonio Pass region can be estimated from stressing rates provided by three-dimensional forward crustal deformation models. Mo…
Investigating the role of faults in fluid migration and gas hydrate formation along the southern Hikurangi Margin, New …
The Hikurangi Margin off the east coast of the North Island (Te Ika-a-Māui) is a tectonically active subduction zone and the location of New Zealand’s largest gas hydrate province…
Are we in the right path in using early warning systems?
This article focusses on the recent tsunami in Indonesia, and the factors led to a large number of fatalities. We also discussed the failure of early warning systems, steps, metho…
Base-Salt Relief Controls Salt-Related Deformation in the Outer Kwanza Basin, offshore Angola
We use a 3D seismic dataset from Offshore Angola to document the salt-influenced translation and evolution of structures on the margin.
What is Trishear?
The kinematics of fault-propagation folds, formed above the tips of upward propagating normal faults, is typically inferred from numerical and physical models. Trishear is a forwa…
Contrasting TiO2 compositions in Early Cenozoic mafic sills of the Faroe Islands: an example of basalt formation from d…
Abstract: The Paleocene lava succession of the Faroe Islands Basalt Group (FIBG), which is a part of the North Atlantic Igneous Province (NAIP), is intruded by numerous basaltic s…
Tornado damage ratings estimated with cumulative logistic regression
Empirical studies have led to improvements in evaluating and quantifying the tornado threat. However more work is needed to put the research onto a solid statistical foundation. H…
Interaction of Sea-Level Pulses with Periodically Retreating Barrier Islands
Barrier deposits preserved on continental shelf seabeds provide a record of the paleocoastal environment from the last glacial maximum through the Holocene. The formation of these…
The contribution of submesoscale over mesoscale eddy iron transport in the open Southern Ocean
In order to examine the roles of ocean dynamics in supplying iron, the limiting nutrient in the open Southern Ocean, to the surface where it can be effectively utilized for photos…
Can barrier islands survive sea-level rise? Quantifying the relative role of tidal deltas and overwash deposition
Accepted open-access publication available at: https://doi.org/10.1029/2019GL085524 Barrier island response to sea-level rise depends on their ability to …
Evolution of a shear zone before, during and after melting
Partial melt in the deforming mid/lower continental crust causes a strength decrease and drives formation of lithological heterogeneities. However, mechanisms of formation of syn-…
Evaluating precipitation datasets for large-scale distributed hydrological modelling
Over the past decades, a variety of valuable research studies has helped to advance our understanding of the advantages and limitations of satellite derived precipitation datasets…
Relationships between soil chemical properties and rare earth element concentrations in the aboveground biomass of a tr…
The geochemical behavior of rare earth elements (REE) has been mainly investigated in geological systems where they represent the best proxies for processes occurring at the inter…
Urban Seismic Site Characterization by Fiber-Optic Seismology
Accurate ground-motion prediction requires detailed site effect assessment, but in urban areas where such assessments are most important, geotechnical surveys are difficult to per…
The Baltic TRANSCOAST approach – investigating shallow coasts as terrestrial-marine interface of water and matter fluxes
In Baltic TRANSCOAST we study the physical, biogeochemical, and biological processes at the land-ocean interface. The coastal zone is heavily impacted by various human activities …
Global coastal wetland expansion under accelerated sea-level rise is unlikely
Schuerch et al. (2018) [1] deserve credit for compiling a wide range of disparate, global datasets that will be instrumental in predicting future coastal wetland change. However, …
The moment duration scaling relation for slow rupture arises from transient rupture speeds
The relation between seismic moment and earthquake duration for slow rupture follows a different power law exponent than sub-shear rupture. The origin of this difference in expone…
Assessing Climate Model Projections of Anthropogenic Warming Patterns
Projections of future anthropogenic climate change and their uncertainties are determined by analyzing large ensembles of numerical climate models. Since the late 1980s, transient…
Terrane boundary reactivation, barriers to lateral fault propagation and reactivated fabrics - Rifting across the Media…
Prominent structural heterogeneities within the lithosphere may localise or partition strain and deformation during tectonic events. The NE-trending Great South Basin, offshore Ne…
Southern Ocean Phytoplankton Blooms Observed by Biogeochemical Floats
The spring bloom in the Southern Ocean is the rapid-growth phase of the seasonal cycle in phytoplankton. Many previous studies have characterized the spring bloom using chlorophyl…
Heat distribution in the Southeast Pacific is only weakly sensitive to high-latitude heat flux and wind stress
The Southern Ocean features regionally-varying ventilation pathways that transport heat and carbon from the surface ocean to the interior thermocline on timescales of decades to c…
The sensitivity of Southeast Pacific heat distribution to local and remote changes in ocean properties
The Southern Ocean features ventilation pathways that transport surface waters into the subsurface thermocline on timescales of decades to centuries, sequestering anomalies of hea…
Influence of fault roughness on surface displacement: from numerical simulations to coseismic slip distributions
Field studies characterized early on natural faults as rough, i.e. non-planar at all scales. Fault roughness induces local stress perturbations, which dramatically affect rupture …
Seismological evidence for subcrustal magmatic injection beneath Fogo volcano, Cape Verde hotspot
Fogo volcano belongs to the Cape Verde hotspot and its most recent eruption occurred from November 2014 to February 2015. From January to December 2016 we operated a temporary sei…
δ13C values of bacterial hopanoids and leaf waxes as tracers for methanotrophy in peatlands
Methane emissions from peatlands contribute significantly to atmospheric CH4 levels and play an essential role in the global carbon cycle. The stable carbon isotopic composition (…
Fringe or background: Characterizing deep-water mudstones beyond the basin-floor fan sandstone pinchout
Mud dominates volumetrically the fraction of sediment delivered and deposited in deep-water environments, and mudstone is a major component of basin-floor successions. However, st…
Photonic seismology in Monterey Bay: Dark fiber DAS illuminates offshore faults and coastal ocean dynamics
Emerging fiber-optic sensing technology coupled to existing subsea telecommunications cables can provide access to unprecedented seafloor observations of both ocean and solid eart…
The Leaning Puy de Dôme
Acidic lava domes are a special monogenetic volcano type with explosive eruption hazards. Such domes raise questions about the nature of monogenetic volcanism. We study the iconic…
Tectonic stress controls saucer-shaped sill geometry
Saucer-shaped sills are common in sedimentary basins worldwide. The saucer shape relates to asymmetric stress distributions at the sill-tip during intrusion caused by bending of t…
Finite element simulations of sill intrusion during tectonic loading
Igneous sills are common features in tectonically active regions, acting as nascent magma storage systems, or feeding eruptions at large lateral distances from the magma source. S…
Tectonic controls on the Maastrichtian-Danian transgression in the Magallanes-Austral foreland basin (Chile): Implicati…
The Maastrichtian-Danian transgression was one of the most extensive Atlantic-derived marine incursions in Patagonia. This study examines its stratigraphic record and origin in th…
Neoglacial trends in diatom dynamics from a small alpine lake in the Qinling Mountains of central China
During the latter stages of the Holocene, and prior to anthropogenic global warming, the Earth underwent a period of cooling called the neoglacial. The neoglacial was associated w…
Denoising ambient seismic field correlation functions with convolutional autoencoders
Seismic interferomestry is an established method for monitoring the temporal evolution of the Earths physical properties. We introduce a new technique to improve the precision and…
The impact of Mg2+ ions on equilibration of Mg-Ca carbonates in groundwater and brines
At temperatures below 50°C, the Mg2+/Ca2+ values in groundwater and brines, irrespective of their origin - either carbonaceous or siliceous rocks/sediments - show a large spread. …
A bedform phase diagram for dense granular currents
Pyroclastic density currents are a life-threatening volcanic hazard. Our understanding and hazard assessments of these flows primarily rely on interpretations of their deposits. T…
Segmentation of the Main Himalayan Thrust inferred from geodetic observations of interseismic coupling
Mapping the distribution of locked segments along subduction megathrusts is essential for improving quantitative assessments of seismic hazard. Previous geodetic studies suggest t…
The Glacial Origins of Relict Pingos, Wales, UK
Ramparted depressions (doughnut-shaped debris-cored ridges with peat- and/or sediment-filled central basins) are commonly perceived to represent the relict collapsed forms of perm…
Evidence against a general positive eddy feedback in atmospheric blocking
The eddy straining mechanism of Shutts (1983; S83) has long been considered a main process for explaining the maintenance of atmospheric blocking. As hypothesized in S83, incoming…
From prodigious volcanic degassing to caldera subsidence and quiescence at Ambrym (Vanuatu): the influence of regional …
Eruptive activity shapes volcanic edifices. The formation of broad caldera depressions is often associated with major collapse events, emplacing conspicuous pyroclastic deposits. …
Certified Reduced Basis Method in Geosciences Addressing the challenge of high dimensional problems
One of the biggest challenges in Computational Geosciences is finding ways of efficiently simulating high-dimensional problems. In this paper, we demonstrate how the RB method can…
What sets the width of a river?
Alluvial rivers are formed by, and are an expression of, the water and sediment that they convey. They are the primary arteries of water and nutrients on land, making them the lif…
Increasing dependence of lowland population on mountain water resources
Mountain areas provide disproportionally high runoff in many parts of the world, but their importance for lowland water resources and food production has not been clarified so far…
Lateral variability of shelf-edge, slope and basin-floor deposits, Santos Basin, offshore Brazil
Construction of continental margins is driven by sediment transported across the shelf to the shelf-edge, where it is reworked by wave-, tide- and river-influenced processes withi…
Reducing uncertainties in climate projections with emergent constraints: Concepts, Examples and Prospects
Models disagree on a significant number of responses to climate change, such as climate feedback, regional changes, or the strength of equilibrium climate sensitivity. Emergent co…
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