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Showing 34351 to 34400 of 59105 works
Fingerprinting fluid source in calcite veins: combining LA-ICP-MS U-Pb calcite dating with trace elements and clumped i…
Application of geochemical proxies to vein minerals - particularly calcite - can fingerprint the source of fluids controlling various important geological processes from seismicit…
Neoproterozoic Geochronology and Provenance of the Adelaide Superbasin
The Adelaide Superbasin (Adelaide Rift Complex, Stuart Shelf, Torrens Hinge Zone, Coombalarnie Platform, and Cambrian Stansbury and Arrowie Basins) is a vast sedimentary basin in …
Variational Ensemble-Transform Filtering of HFR & ADCP velocities in the ice-free Chukchi Sea
The Chukchi Sea (CS) is the gateway to the Arctic Ocean (AO) for Pacific waters entering from Bering Strait (BS) and also a potential location for future offshore oil extraction. …
Alkenone isotopes show evidence of active carbon concentrating mechanisms in coccolithophores as aqueous carbon dioxide…
Coccolithophores and other haptophyte algae acquire the carbon required for metabolic processes from the water in which they live. Whether carbon is actively moved across the cel…
Age and geochemistry of the Boucaut Volcanics in the Neoproterozoic Adelaide Rift Complex, South Australia
The Adelaide Rift Complex in South Australia records the break-up of Rodinia at a time of great climatic and biological evolution. The Boucaut Volcanics within the Neoproterozoic …
Erstnachweis der Lebensspur Uchirites triangularis MACSOTAY 1967 im Kupferschiefer Nordhessens
[…] Beschrieben wird der Erstnachweis der Lebensspur Uchirites triangularis im nordhessischen Kupferschiefer. Der Fund stammt von einer Kupferschieferhalde bei Bauhaus (Nentershau…
Bodenhydrologische Untersuchungen zum Versickerungs- und Abflußverhalten von Pseudogleyen aus quartären Deckschichten i…
[...] Es wird die Wasserdynamik quartärer Deckschichten und der darin ausgebildeten Pseudogleye in einem bewaldeten Kleineinzugsgebiet im Hohen Taunus vorgestellt. Erfaßt werden k…
TRAINING A PHYSICS-GUIDED CONVOLUTIONAL NEURAL NETWORK FOR SEISMIC INVERSION
The determination of subsurface elastic property models is crucial in quantitative seismic data processing and interpretation. This problem is commonly solved by deterministic phy…
Tracking and measuring of clay shrinking and swelling using spaceborne remote sensing
New capabilities for measuring and monitoring are needed to improve the shrink/swell hazard. A new French experimental site at Chaingy (Centre-Val de Loire) has been instrumented …
What Controls Salt‐Detached Contraction in the Translational Domain of the Outer Kwanza Basin, Offshore Angola?
It is now well‐established that base‐salt relief drives complex deformation patterns in the mid‐slope domain of salt‐bearing passive margins, in a location classically thought to …
Mapping Research Topics at Multiple Levels of Detail
Institutional reviews typically rely on scientometrics, like the h-index and impact factors of their participants, to assess research productivity. Productivity is not the only re…
Impact of Hydrostratigraphic Continuity in Heterogeneity on Brine-to-Freshwater Interface Dynamics; Implications from a…
Despite the prevalence of density-driven flow systems in brine-rich aquifers of arid climates and coastal aquifers, the impact of realistic geologic conditions remains poorly cons…
Finding karstic caves and rockshelters in the Inner Asian mountain corridor using predictive modelling and field survey
The area of the Inner Asian Mountain Corridor (IAMC) follows the foothills and piedmont zones around the northern limits of Asia’s interior mountains, connecting two important are…
Post-Processing a Conceptual Rainfall-Runoff Model with an LSTM
Machine learning is becoming an increasingly important part of streamflow forecasting, but as these models to date lack a physical basis, there is a potential that they may produc…
DFG Final Report: Late Pleistocene to Holocene climate variations and anthropogenic changes in the North German Plain i…
English Summary The project investigates the climate, environmental, and land-use history of Schweriner See using lacustrine sediments as a high-resolution natural archive. The pr…
Automatic atmospheric correction for shortwave hyperspectral remote sensing data using a time-dependent deep neural net…
Atmospheric correction is an essential step in hyperspectral imaging and target detection from spectrometer remote sensing data. State-of-the-art atmospheric correction algorithms…
Range-based intensity normalization of ALS data over forested areas using a sensor tracking method from multiple returns
Airborne laser scanning (ALS) point-clouds are used in forest inventory to map properties of the resource. In most cases, only the (x,y,z) coordinates of the point cloud are used …
Die Gesteine im Sockel des Jahn-Denkmals in der Berliner Hasenheide – ein geologisch-sporthistorisches Freilichtmuseum
[...] Diese Kurzmitteilung dokumentiert die Ergebnisse einer geologischen Neuaufnahme der Gesteine, die im Sockel des Friedrich-Ludwig-Jahn-Denkmals in der Berliner Hasenheide ver…
Iron oxide reactivity controls organic matter mineralization in ferruginous sediments
Ferruginous sediments were widespread during the Archaean and Proterozoic Eons, but our knowledge about organic matter mineralization remains mostly conceptual, as analogous moder…
Habitability of the early Earth: Liquid water under a faint young Sun facilitated by strong tidal heating due to a near…
Geological evidence suggests liquid water near the Earths surface as early as 4.4 gigayears ago when the faint young Sun only radiated about 70 % of its modern power output. At th…
Towards local bioeconomy: A stepwise framework for high-resolution spatial quantification of forestry residues
In the ambition of a transition from fossil carbon use, forestry residues are attracting considerable attention as a feedstock for the future bioeconomy. However, there is a limit…
Forecasting the localized bilateral effects of ocean acidification on the counter carbonate pump using recurrent neural…
The counter carbonate pump(CCP) is responsible for carbon dioxide sequestration and cycling forms of carbon in the ocean. It is primarily driven by calcifying plankton, such as fo…
Der Wandel in der geophysikalischen Arbeitswelt – persönliche Reflexionen
Der Wandel in der Arbeitswelt ist gravierend und gleichzeitig komplex und eng verzahnt mit den gesellschaftlichen und politischen Veränderungen. Zu den Top-Themen gehören natürlic…
Fracture mechanics of rate-and-state faults and fluid injection induced slip
Propagation of a slip transient on a fault with rate-and-state dependent friction resembles a fracture which near tip region is characterized by large departure of the slip veloci…
Climate has contrasting direct and indirect effects on armed conflicts
There is an active debate regarding the influence that climate has on the risk of armed conflict, which stems from challenges in assembling unbiased datasets, competing hypotheses…
Hydrogeologie der Modau im kristallinen Odenwald
[...] Das Einzugsgebiet der Modau im Mittelgebirgsraum des Odenwaldes südlich von Darmstadt wurde im Sommer 1996 im Hinblick auf den Trockenwetterabfluss (TWA) und die Hydrogeoche…
An Early Pliocene relative sea level record from Patagonia (Argentina)
We report a geological unit surveyed and dated in central Patagonia, Argentina (Camarones town, San Jorge Gulf). The unit was interpreted as representative of an intertidal enviro…
Application of the tilt derivative transform to bathymetric data for structural lineament mapping
High-resolution bathymetry surveys provide an opportunity to analyse local geological structure where onshore areas afford limited exposure. Semi-automated lineament detection met…
Mass independent fractionation of even and odd mercury isotopes during atmospheric mercury redox reactions
Mass independent fractionation (MIF) of even mass number mercury (Hg) stable isotopes is observed in rainfall and gaseous elemental Hg0 globally, and is used to quantify atmospher…
Seasonal methane dynamics in high-elevation lakes in the Sierra Nevada California: the role of elevation, temperature, …
Freshwater lakes are important but poorly constrained sources of methane to the atmosphere due to high, but variable, rates of methane production, as well as limited and inconsist…
Neue Erkenntnisse aus alten Daten? - Digitalisierung und Auswertung mikropaläontologischer Berichte
[…] Die DDR entwickelte sich aufgrund anhaltender Rohstoffknappheit und Autarkiebestrebungen, befeuert durch die Planwirtschaft, zu einem der geologisch am gründlichsten erforscht…
Formation Susceptibility to Wellbore Instability and Sand Production in the Hajdúszoboszló field, Pannonian Basin: Hung…
Wellbore instability and formation sand production pose potential risks for wellbore drilling, completion and production operations. In many sandstone reservoirs worldwide, sand p…
Surprising Changes in Aerosol Loading over India Amid COVID-19 Lockdown
Using ground-based and satellite observation along with aerosol reanalysis products, we show a widespread reduction in aerosol loading over the Indian subcontinent during the COVI…
GANSim: Conditional Facies Simulation Using an Improved Progressive Growing of Generative Adversarial Networks (GANs)
Conditional facies modeling combines geological spatial patterns with different types of observed data, to build earth models for predictions of subsurface resources. Recently, re…
Die quartäre Ausräumungszone von Storkow-Wölsickendorf im Bereich der Struktur Buckow
[…] Der Band vereint eine breite Auswahl geowissenschaftlicher Fachaufsätze, Projektberichte und Mitteilungen des Landesamtes für Geowissenschaften und Rohstoffe Brandenburg. Them…
Deep spatial transformers for autoregressive data-driven forecasting of geophysical turbulence
A deep spatial transformer based encoder-decoder model has been developed to autoregressively predict the time evolution of the upper layers stream function of a two-layered quasi…
Exposure and vulnerability estimation for modelling flood losses to commercial assets in Europe
Commercial assets comprise buildings, machinery and equipment, which are susceptible to floods. Existing damage models and exposure estimation methods for this sector have limited…
Ekman-Inertial Instability
We report on an instability, arising in sub-surface, laterally-sheared flows in rotation. When the lateral shear of a horizontal flow in geostrophic balance is of opposite sign as…
Post-processing the National Water Model with Long Short- Term Memory Networks for Streamflow Predictions and Model Dia…
We build three Long Short-Term Memory (LSTM) daily streamflow prediction models (deep learning networks) for 531 basins across the contiguous United States (CONUS), and compare th…
Menaspis armata EWALD, ein histologisch interessanter Arthrodirenfund im hessischen Zechsteinkalk
[…] Beschrieben wird ein größerer Fischfund aus dem hessischen Zechsteinkalk, der dem Arthrodira Menaspis armata zugeordnet wird. Das Fossil zeigt bislang unbekannte histologische…
Seismic swarm preceding the 2017 Mount Agung eruption in Bali (Indonesia) enhanced by the matched filter approach
Intense swarm seismicity took place before the 2017 Mount Agung eruption in Bali (Indonesia). However, the earthquake sequences were not well documented. In addition, there was a …
“Empirical pre-whitening” spectral analysis detects periodic but inconsistent signals in abyssal hill morphology at the…
The existence, or not, of periodicities in abyssal hill morphology has been vigorously debated in recent publications, and some have hypothesized that such periodicities are evide…
Vom Bergbau zum Geopark – Erkundung der Bergbaufolgelandschaft des Braunkohlenbergwerks „Przyjaźń Narodów“ – Schacht Ba…
[…] Das Forschungsteam präsentiert den Einsatz von Fernerkundungs- und GIS-gestützten Methoden zur Überwachung geogener Gefahren in ehemaligen Bergbaugebieten Niederschlesiens. Ba…
An agent-based model for estimating emissions reduction equivalence among leak detection and repair programs
Alternative leak detection and repair (alt-LDAR) programs are being introduced by regulators in North America to provide flexibility in how oil and gas producers manage their fugi…
Machine learning and fault rupture: a review
Geophysics has historically been a data-driven field, however in recent years the exponential increase of available data has lead to increased adoption of machine learning techniq…
Storm surge, not wind, caused mangrove dieback in southwest Florida following Hurricane Irma
Mangroves buffer inland ecosystems from hurricane winds and storm surge. However, their ability to withstand harsh cyclone conditions depends on plant traits and geomorphology. Us…
Influences on Discharge Partitioning on a Large River Delta: Case Study of the Mississippi-Atchafalaya Diversion, 1926–…
The modern Mississippi River (M.R.) Delta is plumbed by the Mississippi and Atchafalaya rivers, setting water and sediment dispersal pathways for Earth’s fifth-largest river syste…
Kurzmitteilung: Temperaturmessungen in Tiefbohrungen - Repräsentanz und Möglichkeit einer näherungsweisen Korrektur
[…] Der Beitrag beschreibt Entstehung, Aufbau und Zielsetzung der „Märkischen Eiszeitstraße“, einer touristischen, naturkundlichen und kulturhistorischen Themenroute im Nordosten …
Model Parameter Evaluation and Improvement for Real-Time Flood Inundation Mapping Using HAND Model: Iowa Case Study
In this study, the performance of Height Above Nearest Drainage (HAND) was evaluated in Linn, Jones, Johnson, Cedar, and Muscatine counties in the State of Iowa. The impacts of th…
Tidal Modulation of Antarctic Ice Shelf Melting
Tides influence basal melting of individual Antarctic ice shelves, but their net impact on Antarctic-wide ice-ocean interaction has yet to be constrained. Here we quantify the imp…
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