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Showing 34751 to 34800 of 59105 works
P wave anisotropy caused by partial eclogitization of descending crust demonstrated by modelling effective petrophysica…
Seismological studies of large-scale processes at convergent plate boundaries typically probe lower crustal structures with wavelengths of several kilometers, whereas field-based …
Vulkano-seismische Deformationen im Kieselschiefer – Befunde einer strukturellen Anschliff-Analyse
[…] Die Detailuntersuchung eines Anschliffs aus dem unterkarbonischen Kieselschiefer des Kellerwaldes zeigt eine komplexe Strukturvielfalt aus Chert-, Spiculit- und Tuffitlagen. B…
Subducted oceanic crust as the origin of seismically slow lower-mantle structures
Mantle tomography reveals the existence of two large low shear velocity provinces (LLSVPs) at the base of the mantle. We examine here the hypothesis that they are piles of oceanic…
WORKSHOP REPORT: Securing Legacy Seismic Data to Enable Future Discoveries September 18-19, 2019 Albuquerque, New Mexi…
On September 18-19, 2019 a workshop on Securing Legacy Data to Enable Future Discoveries was held in Albuquerque, New Mexico engaging 29 researchers representing universities, nat…
Abflussregulation und Retentionspotenzial im Schwarzbach-Einzugsgebiet/Taunus
[...] Die Bewertung der Abflussretention von Hydrotopen kann auf Basis einer Klassifikation der Abflussregulationsfunktion durchgeführt werden. Dies wurde im mesoskaligen Einzugsg…
Inchworm-like source evolution through a geometrically complex fault fueled persistent supershear rupture during the 20…
How does fault slip follow an earthquake rupture front propagating faster than the local shear-wave velocity (i.e., at supershear speed)? How does a supershear rupture front pass …
What Role Does Hydrological Science Play in the Age of Machine Learning?
We suggest that there is a potential danger to the hydrological sciences community in not recognizing how transformative machine learning will be for the future of hydrological mo…
Processing Seismic Ambient Noise Data with the Continuous Wavelet Transform to Obtain Reliable Empirical Green’s Functi…
We propose a new data processing flow to compute empirical Green’s functions (EGF) from ambient seismic noise based on a soft thresholding designaling and denoising method using t…
Tracking Flooding Phase Transitions and Establishing a Passive Hotline with AI-Enabled Social Media Data
Flooding management requires collecting real-time onsite information widely and rapidly. As an emerging data source, social media demonstrates an advantage of providing in-time, r…
Using computer-aided image processing to estimate chemical composition of igneous rocks: A potential tool for large-sca…
Digital cameras, particularly on smartphones, have led to the proliferation of amateur photographers. Of interest here is the use of smartphone cameras to conduct rapid, low-cost …
Plant Physiology Increases the Magnitude and Spread of the Transient Climate Response in CMIP6 Earth System Models
Increasing concentrations of CO2 in the atmosphere not only influence climate through CO2’s effect as a greenhouse gas but also through its impact on plants. Plants respond to atm…
Glazdynamik im Umfeld einer weichselkltzeitlichen Srauchendmoräne am Südrand der Salinarstrutkur Rüdersdorf bei Berlin
[…] In einem temporären Aufschluß der weichselkaltzeitlichen Jungmoränenlandschaft (Barnim-Platte) im Bereich der Südflanke der Salinarstruktur Rüdersdorf bei Berlin wurden empiri…
New composite bio- and isotope stratigraphies spanning the Middle Eocene Climatic Optimum at tropical ODP Site 865 in t…
The Middle Eocene Climatic Optimum (MECO) at ca. 40 Ma is one of the largest of the transient Eocene global warming events. However, it is relatively poorly known from tropical se…
Evolution of a mixed siliciclastic-carbonate deep-marine system on an unstable margin: the Cretaceous of the Eastern Gr…
Mixed siliciclastic-carbonate deep-marine systems (mixed systems) are less documented in the geological record than pure siliciclastic systems. The similarities and differences be…
The effect of surge on riverine flood hazard and impact in deltas globally
Current global riverine flood risk studies assume a constant mean sea level boundary. In reality high sea levels can propagate up a river, impede high river discharge, thus leadin…
Evidence of recurrent mass movement in front of the maximum slip area of the 1960 Chile earthquake: Implications for ri…
We present evidence that suggests a new risk scenario for the Valdivia basin in south Chile, located in the area of the magnitude 9.5 1960 earthquake. In 1960, three mass movement…
Geologische Übersichtskarte 1 : 100 000 Blatt Berlin (Blatt 14)
[...] Die Kurzmitteilung stellt die neu erschienene Geologische Übersichtskarte von Berlin im Maßstab 1 : 100 000 vor, die in Kooperation zwischen der Berliner Senatsverwaltung, d…
Organic carbon and microbial activity in marine sediments on a global scale throughout the Quaternary
Microbial degradation of organic carbon in marine sediments is a key driver of global element cycles on multiple time scales. However, it is not known to what depth microorganisms…
Array-based iterative measurements of SmKS travel times and their constraints on outermost core structure
Vigorous convection in Earths outer core led to the suggestion that it is chemically homogeneous. However, there is increasing seismic evidence for structural complexities close t…
Realistic River Image Synthesis using Deep Generative Adversarial Networks
In this paper, we investigate an application of image generation for river satellite imagery. Specifically, we propose a generative adversarial network (GAN) model capable of gene…
Enabling high-performance cloud computing for Earth science modeling on over a thousand cores: application to the GEOS-…
Cloud computing platforms can facilitate the use of Earth science models by providing immediate access to fully configured software, massive computing power, and large input datas…
Large-scale crustal structure beneath Singapore using receiver functions from a dense urban nodal array
Geophysics has a role to play in the development of smart cities, for example through geohazard mitigation and subsurface imaging for underground construction. This is particularl…
Connecting a broad spectrum of transient slip on the San Andreas fault
Strain accumulated on the deep extension of some faults are episodically released during transient slow-slip events which can subsequently load the shallow seismogenic region. At …
Constraints on mantle viscosity and Laurentide ice sheet evolution from pluvial paleolake shorelines in the western Uni…
The deformation pattern of the paleoshorelines of extinct Lake Bonneville were among the first features to indicate that Earths interior responds viscoelastically to changes in su…
History of on-board equipment improvement for GNSS-A observation with focus on observation frequency
The Global Navigation Satellite System-Acoustic ranging combination technique (GNSS-A) is a seafloor geodetic technique that enables precise global seafloor positioning to detect …
EU-Großübung MAGNITUDE: Erdbeben der Stärke Mw 6,9 in Baden-Württemberg
In der zweiten Oktoberhälfte 2024 fand in Baden-Württemberg die mehrtägige internationale Katastrophenschutzgroßübung MAGNITUDE statt. Ausgangsszenario war ein Erdbeben der Stärke…
The 2019 MW 5.7 Changning earthquake, Sichuan Basin, China – a shallow doublet with different faulting styles
The increased seismic activity of the last ~10 years in Changning county of Sichuan Province comprised just small (mostly ML < 5.0) injection-induced earthquakes. The MW 5.7 ea…
Did sea-level change cause the switch from fissure-type to central-type volcanism at Mount Etna, Sicily?
One of the most intriguing aspects of the evolution of Mount Etna (eastern Sicily) is the switch from a fissure-type shield volcano coincident with the Ionian coast to an inland c…
Impact of topography on earthquake static slip inversions
Our understanding of earthquakes is limited by our knowledge, and our description, of the physics of the Earth. When solving for subsurface fault slip, it is common practice to as…
Stauwassersedimente im brandenburgischen Abschnitt der Erdgasfernleitung OPAL südlich der Pommerschen Eisrandlage
[...] Die Untersuchung befasst sich mit der Dokumentation und genetischen Interpretation feinkörniger Sedimente, die während des Baus der Erdgasfernleitung OPAL im Land Brandenbur…
Stress Changes on the Garlock fault during and after the 2019 Ridgecrest Earthquake Sequence
The recent 2019 Ridgecrest earthquake sequence in Southern California jostled the seismological community by revealing a complex and cascading foreshock series that culminated in …
Chalcophile elements track the fate of sulfur at Kīlauea Volcano, Hawai’i
Chalcophile element concentrations in melt inclusions and matrix glasses may be used to investigate low pressure degassing processes, as well as sulfide saturation during crustal …
Iron mineral dissolution releases iron and associated organic carbon during permafrost thaw
It has been shown that reactive soil minerals, specifically iron(III) (oxyhydr)oxides, can trap organic carbon in soils overlying intact permafrost, and may limit carbon mobilizat…
Urgent Tsunami Computing
Tsunamis pose a hazard that may strike a coastal population within a short amount of time. To effectively forecast and warn for tsunamis, extremely fast simulations are needed. Ho…
Drivers of Local Ocean Heat Content Variability in ECCOv4
Variation in upper ocean heat content is a critical factor in understanding global climate variability. By using temperature anomaly budgets in a physically consistent ocean state…
The what, how and why of human coprolite analysis in archaeology
Coprolites are a highly informative but still underutilized proxy for understanding past environments, palaeodiets, and ancient human health. Here we provide a critical review of …
Machine learning for digital soil mapping: applications, challenges and suggested solutions
The uptake of machine learning (ML) algorithms in digital soil mapping (DSM) is transforming the way soil scientists produce their maps. Machine learning is currently applied to m…
Comparison of permeability predictions on cemented sandstones with physics-based and machine learning approaches
Permeability prediction has been an important problem since the time of Darcy. Most approaches to solve this problem have used either idealized physical models or empirical relati…
‘Scallywag Bunkers’: Geophysical Investigations of WW2 Auxiliary Unit Operational Bases (OBs) in the UK
In 1940, with the fall of France imminent, Britain prepared for invasion. After Dunkirk, with most armour and transport lost, a defence ‘stop line’ (GHQ Line) was prepared. Local …
Centrifugal and symmetric instability during Ekman adjustment of the bottom boundary layer
Flow along isobaths of a sloping lower boundary generates an across-isobath Ekman transport in the bottom boundary layer. When this Ekman transport is down the slope it causes con…
Detektion der Süß-/Salzwassergrenze mittels geoelektrischer und elektromagnetischer Verfahren – Beispielhafte Untersuch…
[...] Das Projekt untersuchte die Tiefenlage und räumliche Verteilung der Süß-/Salzwassergrenze an einem Standort ca. 5 km westlich von Müllrose mittels einer Kombination aus geoe…
A new model for fault growth during syn-kinematic deposition
Constraining the mechanisms of fault growth is essential for understanding extensional tectonics. In these dynamic systems the propagation of existing faults through recent syn-ki…
Fault rupture during the December 26, 2018, Mw 4.9 Fleri earthquake (Mt. Etna): surface faulting in a volcano-tectonic …
On December 26, 2018, the largest instrumental earthquake ever recorded in Mt. Etna (Sicily, southern Italy) shook the eastern flank of the volcano, with epicenter near the Fleri …
Sedimentologisches Modell einer Rinne im Unteren Muschelkalk (Trias) Nordhessens
[…] Untersucht wird die Veränderung der chemischen Zusammensetzung von Grundwässern durch Tunnelbauarbeiten unter Anwendung der Spritzbetonbauweise. Im Fokus stehen die Auswirkung…
High-resolution surface velocities and strain for Anatolia from Sentinel-1 InSAR and GNSS data
Measurements of present-day surface deformation are essential for the assessment of long-term seismic hazard. The European Space Agencys Sentinel-1 satellites enable global, high-…
Developing a coral proxy system model to compare coral and climate model estimates of changes in paleo-ENSO variability
Coral records of surface-ocean conditions extend our knowledge of interannual El Niño-Southern Oscillation (ENSO) variability into the pre-instrumental period. That said, the wide…
Base Level Changes based on Basin Filling Modelling: a Case Study from the Paleocene Lishui Sag, East China Sea Basin
Estimation of base level changes in geological records is an important topic for petroleum geologists. Taking the Paleocene Upper Lingfeng Member of Lishui Sag as an example, this…
On the potential of linked-basin tidal power plants: an operational and coastal modelling assessment
Single-basin tidal range power plants have the advantage of predictable energy outputs, but feature non-generation periods in every tidal cycle. Linked-basin tidal power systems c…
Die Böden des Rheingaues und ihre Eignung für den Weinbau
[…] Die Böden des Rheingaues werden hinsichtlich ihrer Entstehung, Verbreitung und Eignung für den Weinbau untersucht. Grundlage sind geologische, geomorphologische und bodenkundl…
A Shallow Water Model for Convective Self-Aggregation
Convective self-aggregation is proposed to be fundamental to the development of tropical cyclones and the Madden-Julian Oscillation, both of which are long-term mysteries in tropi…
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