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Showing 34401 to 34450 of 59105 works
Brandenburgische Geowissenschaftliche Beiträge
[...] Die Brandenburgischen Geowissenschaftlichen Beiträge, Band 22 Heft 1 (2015), stellen ein thematisches Sonderheft zum „Internationalen Jahr des Bodens“ dar und widmen sich um…
Adjoint-based sensitivity analysis for a numerical storm surge model
Numerical storm surge models are essential to forecasting coastal flood hazard and informing the design of coastal defences. However, such models rely on a variety of inputs, many…
A comparison of Bayesian inference and gradient-based approaches for friction parameter estimation
Numerical tidal models are essential to the study of a variety of coastal ocean processes, but typically rely on uncertain inputs, including a bottom friction parameter which can …
Dislocation interactions in olivine control postseismic creep of the upper mantle
Changes in stress applied to mantle rocks, such as those imposed by earthquakes, induce a period of evolution in viscosity and microstructure. This transient creep is often modell…
Seismological Expression of the Iron Spin Crossover in Ferropericlase in the Earth’s Lower Mantle
The two most abundant minerals on Earth which together make up over 90% of the Earth’s lower mantle are (Mg,Fe)O-ferropericlase (Fp) and (Mg,Fe)SiO3-bridgmanite (Bm). Iron in Fp u…
Zyklenstratigraphie der Estherienschichten (Obere Trias, S-Deutschland, NO-Bayern)
Die Estherienschichten (Obere Grabfeld-Formation) im Profil Barbaraberg bei Speinshart (Oberpfalz) werden fünf Faziestypen zugeordnet, die fünf Stadien der Wasserbedeckung in eine…
Modelling massive AIS streams with quad trees and Gaussian Mixtures
Pressing issues related to the movement of people and goods can be tackled today thanks to improvements in tracking and communications technology that have …
Fully Automated Carbonate Petrography Using Deep Convolutional Neural Networks
Carbonate rocks are important archives of past ocean conditions as well as hosts of economic resources such as hydrocarbons, water, and minerals. Geologists typically perform comp…
Rates of olivine grain growth during dynamic recrystallization and post-deformation annealing
We performed deformation and grain growth experiments on natural olivine aggregates with moderate olivine water contents (COH = 600±300 ppm H/Si) at 1000-1200°C and a confining pr…
An Ethical Decision-Making Framework with Serious Gaming: Smart Water Case Study on Flooding
Sensors and control technologies are being deployed extensively in both urban water networks and rural river systems, leading to unprecedented ability to sense and control our wat…
Geological Facies Modeling Based on Progressive Growing of Generative Adversarial Networks (GANs)
Geological facies modeling has long been studied to predict subsurface resources. In recent years, generative adversarial networks (GANs) have been used as a new method for geolog…
A Review of Satellite Remote Sensing Techniques of River Delta Morphology Change
River deltas are important coastal depositional systems that are home to almost half a billion people worldwide. Understanding morphology changes in deltas is important in identif…
Excessive seismicity over a limited source: the August 2019 earthquake swarm near Mt. Salak in West Java (Indonesia)
The triggering mechanism of swarm-like seismicity in the Java Island of Indonesia is generally not well understood. Understanding earthquake swarm phenomena and monitoring in vari…
Untersuchungen zur Diagenese und Isotopengeochemie (δ18O,δ13C) der Zechstein 1-Karbonate der Fossillagerstätte Korbache…
[…] In einem Steinbruch bei Korbach tritt in den Randkarbonaten des Zechstein 1 eine über 15 m tiefe Spalte auf, die eine bedeutende Fossillagerstätte (oberpermische, terrestrisch…
Terrestrial evaporation and global climate: lessons from Northland, a planet with a hemispheric continent
From a climate perspective, land differs from the ocean in several fundamental physical ways, including albedo, heat capacity, amount of water storage, and differences in resistan…
Ancient siderites reveal hot and humid super-greenhouse climate
Ancient siderites reveal hot and humid super-greenhouse climate
Potential environmental hazard due to tailings dam failure in Minnesota iron range and safety concern of the Dams in th…
An ongoing debate centered around mining operations and tailings dam usage near the Minnesota mining range led to an investigation of potential environmental hazards near the cit…
Tropical cyclone response to anthropogenic warming as simulated by a mesoscale-resolving global coupled earth system mo…
Tropical cyclones (TCs) are extreme storm systems that form over warm tropical oceans. Along their track TCs can mix up cold water which can further impact their development. Due …
Nonlinear stochastic dissipation in turbulent geophysical flows
The purpose of this study is to further investigate the assumption that geophysical flows can be described and simulated by direct sampling from a dynamically constrained probabil…
Sampling geophysical flows from a dynamically constrained probability distribution
The purpose of this study is to further investigate the problem of explicitly simulating uncertainties in geophysical models. Rather than introducing stochastic processes in forw…
A Comprehensive Review of Deep Learning Applications in Hydrology and Water Resources
The global volume of digital data is expected to reach 175 zettabytes by 2025. The volume, variety, and velocity of water-related data are increasing due to large-scale sensor net…
Tectonic-Sedimentary Interplay of a Multi-Sourced, Structurally-Confined Turbidite System in a Foreland Basin Setting: …
Submarine fans deposited in structurally complex settings record important information on basin evolution and tectonic-sedimentary relationships but are often poorly preserved in …
Women from some under-represented minorities are given too few talks at worlds largest Earth-science conference
Presenting at scientific conferences is key to academic career progression. Scientists don’t just communicate results; they also develop relationships with collaborators and mento…
Rezente vertikale Bewegungen (Karte 4)
[...] Der Beitrag erläutert die Karte der rezenten vertikalen Krustenbewegungen für den Bereich zwischen 4°–36° östlicher Länge und 47°–65° nördlicher Breite. Die Daten basieren a…
Sensing earth and environment dynamics by telecommunication fiber-optic sensors: An urban experiment in Pennsylvania USA
Continuous seismic monitoring of the Earths near surface (top 100 meters), especially with improving the resolution and extent of data both in space and time, would yield more acc…
Suitability Analysis of Remote Sensing Techniques for Shoreline Extraction of Global River Deltas
High frequency flooding, sea level rise and changes to riverine sediment fluxes have threatened the habitable land area of river deltas, where close to half a billion people live,…
Turbulent flow effects in a slickwater fracture propagation in permeable rock
This work is devoted to an analysis of the near-tip region of a hydraulic fracture driven by slickwater in a permeable saturated rock. We consider a steady-state problem of a semi…
Antarctic Ice Shelves Lose Most of Their Mass From Shallow Depths
Understanding the processes involved in basal melting of Antarctic ice shelves is important to quantify the rate at which Antarctica will lose mass. Current research of of ice she…
Two Pixel Reference Algorithm
Object based image analysis (OBIA) has a unique process requirement: relate all the pixels in the segmented images to the vectorized polygons (pixel in polygon). The existing solu…
Nachruf Karl-Heinz Ehrenberg
[…] Der Beitrag würdigt das wissenschaftliche Lebenswerk des Geologen und Vulkanologen Karl-Heinz Ehrenberg (1938–2011). Beschrieben werden seine Arbeiten zur geologischen Kartier…
A First Constraint on Basal Melt-water Production of the Greenland Ice Sheet
The Greenland ice sheet is one of the largest sources of sea-level rise since the early 2000s. Basal melt has not been included explicitly in assessments of ice-sheet mass loss so…
Across-strike asymmetry of the Andes orogen linked to the age and geometry of the Nazca plate
The spine of Andes – the trace of the highest mountain topography – weaves back and forth, in places near the coastline, in others farther inland. Its position is thought to be pa…
Deformation controlled Long-Period seismicity in low cohesion volcanic sediments
Volcano seismicity is an important tool in remotely monitoring and forecasting activity at volcanoes around the world. Volcanic earthquakes show diverse spectral characteristics, …
Methane concentrations in streams reveal gas leak discharges in regions of oil, gas, and coal development
As natural gas has grown in importance as a global energy source, leakage of methane (CH4) from wells has sometimes been noted. Leakage of this greenhouse gas is important because…
The social-ecological dimensions of changing global freshwater availability
Quantifying physical water security at the global scale remains hampered by a lack of systematically produced observational data. Here we combine the observed trends in global fre…
Seismic constraints on rock damaging in a failing mountain peak: the Hochvogel, Allgäu
Large rock slope failures play a pivotal role in long-term landscape evolution and are a major concern in land use planning and hazard aspects. While the failure phase and the tim…
Intrasalt Structure and Strain Partitioning in Layered Evaporites: Implications for Drilling Through Messinian Salt in …
We use 3D seismic reflection data from the Levant margin, offshore Lebanon to investigate the structural evolution of the Messinian evaporite sequence, and how intrasalt strain va…
Zur Taphonomie eines Skelettes von Leptictidium nasutum aus dem Ölschiefer von Messel
[…] Die Arbeit untersucht die Zerlegung eines Skeletts von Leptictidium nasutum aus dem mitteleozänen Ölschiefer von Messel. Die Autoren interpretieren die Zerfallsprozesse als Fo…
The 3D thermal field across the Alpine orogen and its forelands and the relation to seismicity
Temperature exerts a first order control on rock strength, principally via thermally activated creep deformation and on the distribution at depth of the brittle-ductile transition…
Seasonal impact-based mapping of compound hazards
Impact-based, seasonal mapping of compound hazards is proposed. It is pragmatic, identifies phenomena to drive the research agenda, produces outputs relevant to stakeholders, and …
Spatial Statistics on the Geospatial Web
The Geospatial Web provides data as well as processing functionality using web interfaces. Typical examples of such processes are models and predictions for spatial data, known as…
Syn-depositional Mesozoic siliciclastic pathways on the Moroccan Atlantic margin linked to evaporite mobilisation
Evaporite mobilisation in evaporite-cored anticlines leads to topographic growth that can alter sedimentary routing in shallow marine environments. This paper analyses two evapori…
Increased air pollution exposure among the Chinese population during the national quarantine in 2020
The COVID-19 quarantine in China is thought to have been beneficial for reducing the population exposure to ambient air pollution. The overall exposure also depends, however, on i…
Notes on statistical age dispersion in fission-track datasets: the chi-square test, annealing variability, and analytic…
Notes on fission track statistics, the chi-square test, annealing (i.e. fission track age) variability, and analytical bias aimed at a general Earth scientist audience and for use…
Cryoegg: development and field trials of a wireless subglacial probe for deep, fast-moving ice
Subglacial hydrological systems require innovative technological solutions to access and observe. Wireless sensor platforms can be used to collect and return data, but their perfo…
SARS-CoV-2 COVID 19 SPIKES CHEMICAL REACTION WITH CLIMATE HUMIDITY
The analysis consists of daily monitoring of pandemic fluctuations and climatic fluctuations over a period of two months in France. A comparative analysis survey in 27 European c…
Von den Anfängen der geologischen Kartierung im ehemaligen Preußen – ein Beitrag zum Beginn der geologisch-agronomische…
[...] Der Autor gibt einen detaillierten historischen Rückblick auf die Entstehung der amtlichen geologischen Kartierung in Norddeutschland, die 1874 durch die Gründung der Königl…
The Whole Antarctic Ocean Model (WAOM v1.0): Development and Evaluation
The Regional Ocean Modeling System (ROMS), including an ice shelf component, has been applied on a circum-Antarctic domain to derive estimates of ice shelf basal melting. Signific…
Global wave-driven beach evolution; consequences for observation strategies
It is an illusion to think that one can observe monthly beach behaviour with monthly surveys. Current coastal observation strategies restrict understanding of beach evolution, pre…
Decomposing the Drivers of Polar Amplification with a Single Column Model.
The precise mechanisms driving Arctic amplification are still under debate. Previous attribution methods based on top-of-atmosphere energy budgets have assumed all forcings and fe…
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