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Showing 34251 to 34300 of 59105 works

Quantitative estimates of average geomagnetic axial dipole dominance in deep geological time

A defining characteristic of the recent geomagnetic field is its dominant axial dipole which provides its navigational utility and dictates the shape of the magnetosphere. Going b…

Luftaufnahmen als ein Mittel zur Früherkennung von geotechnischen Gefahren für die öffentliche Sicherheit am Tagebaures…

[...] Der Artikel thematisiert die Nutzung von Luftbildaufnahmen zur Überwachung und Früherkennung von geotechnischen Instabilitäten am Helenesee, einem ehemaligen Braunkohlentage…

The 23 June 2020, Mw 7.4 La Crucecita, Oaxaca, Mexico earthquake and tsunami: A Rapid Response Field Survey during COVI…

The 23 June 2020 La Crucecita earthquake occurred at 10:29 hr on the coast of Oaxaca in a Mw 7.4 megathrust event at 22.6 km depth, and triggered a tsunami recorded at Huatulco an…

Use of geochemical and ecotoxicological approaches to evaluate sediment quality in differentially-contaminated, legally…

We compared sediment quality in estuaries at three locations along the coast of São Paulo State, Brazil, using geochemical analyses and whole sediment toxicity tests, performed du…

Ein holozäner Süßwasserkalk vom Scharmützelsee

[...] Der Beitrag beschreibt das seltene Vorkommen von limnischen Festgesteinen im Flachwasserbereich des Scharmützelsees bei Bad Saarow. Der Autor untersucht travertinartige Kalk…

Citizen science reveals the population exposure to air pollution

Air pollution remains a key environmental problem in an increasingly urbanized world. To quantify health impacts and support informed policies, the population exposure needs to be…

Evolution of normal fault displacement and length as the continental lithosphere stretches

Continental rifting is accommodated by the development of normal fault arrays. Fault growth patterns control their related seismic hazards, as well as influencing the tectonostrat…

Apatite fission-track dating by LA-Q-ICP-MS mapping

Obtaining accurate and precise apatite fission-track (AFT) ages is dependent on producing plentiful high-quality apatite grains from a sample, ideally with high spontaneous fissio…

A Statistical Evaluation of WRF-LES Trace Gas Dispersion Using Project Prairie Grass Measurements

In recent years, new measurement systems have been deployed to monitor and quantify methane emissions from the natural gas sector. Large-eddy simulation (LES) has complemented mea…

Der Röt (Oberer Buntsandstein) in der nördlichen Hessischen Senke

[...] Lithologie, Sedimentstrukturen, Mineralogie und Farben des Röts der nördlichen Hessischen Senke werden anhand eines vollständigen Profils beschrieben, das von zwei Kernbohru…

Resolving the Kinematics and Moment Release of Early Afterslip within the First Hours following the 2016 Mw 7.1 Kumamot…

Continuous measurements of postseismic surface deformation provide insight into variations of the frictional strength of faults and the rheology of the lower crust and upper mantl…

Diversity Crisis in UK Geoscience Research Training

Geoscientists have a key role to play in the great challenges of the 21st Century, but solving these problems requires diverse collaborations and engagement with stakeholders from…

Marine mineral-catalyzed NO and N2O formation on the anoxic early Earth

Microbial metabolisms were limited by available terminal electron acceptors in the anoxic environment of the early Archean. However, iron mineral phases in Fe2+-rich (ferruginous)…

A data-driven approach for characterizing community scale air pollution exposure disparities in inland Southern Califor…

This study elucidates PM2.5 exposure disparities in a socioeconomically diverse air basin that is heavily burdened by air pollution. A novel spatial clustering approach is applied…

Unequal anthropogenic enrichment of mercury in Earth’s northern and southern hemispheres

Remote northern (NH) and southern hemisphere (SH) lake sediment and peat records of mercury (Hg) deposition show a ×3 to ×5 Hg enrichment since pre-industrial times (<1880AD), …

Identifying landslides from continuous seismic surface waves: a case study of multiple small-scale landslides triggered…

Landslides can cause devastating damage. In particular, heavy rainfall-triggered landslides pose a chain of natural hazards. However, such events are often difficult to detect, le…

Three-Station Interferometry and Tomography: Coda vs. Direct Waves

Traditional two-station ambient noise interferometry estimates the Greens function between a pair of synchronously deployed seismic stations. Three-station interferometry consider…

On the Evolution of Thermally Stratified Layers at the top of Earth’s Core

Stable stratification at the top of the Earth’s outer core has been suggested based upon seismic and geomagnetic observations, however, the origin of the layer is still unknown. I…

Rote feinklastische Lagen im Mittleren Muschelkalk Südwest-Deutschlands (Baden-Württemberg)

[...] Rote, meist nur mm-dünne Lagen (Ton, Silt) kommen in Südwest-Deutschland im gesamten Ablagerungsgebiet des Mittleren Muschelkalks vor. Sie treten in der Salinar-Formation (H…

Fernandes and Roberts (2020) - preprint

There are many geoscience problems for which constraining histories of uplift or subsidence of Earth’s surface is of direct or indirect importance, for example reconstructing tect…

Ein neues Podocarpaceen-Holz, Circoporoxylon barnimense, aus dem Geschiebe von Brandenburg, Deutschland

[...] Der Beitrag beschreibt eine neue fossile Holzart der Familie Podocarpaceae, die in einem Sedimentgestein innerhalb der weichselzeitlichen Sanderschüttungen im südlichen Barn…

Brandenburgische Geowissenschaftliche Beiträge

[...] Die vorliegende Ausgabe der Brandenburgischen Geowissenschaftlichen Beiträge vereint verschiedene geowissenschaftliche Themen mit Schwerpunkt auf den Bundesländern Berlin un…

Transportation Network Vulnerability and Accessibility for Critical Amenities during Flooding: A Case Study for Iowa

Natural disasters, such as flooding, can cause severe social, environmental, and economic damage to a community. Transportation infrastructure plays an essential role in flood res…

Rapid finite-frequency microseismic noise source inversion at regional to global scales

Ambient noise cross-correlations can be used as self-consistent observables, opening novel possibilities for investigating ambient noise sources. To optimise the forward- modellin…

A Comprehensive Flood Event Specification and Inventory: 1930-2020 Turkey Case Study

Flooding is one of the most frequent natural disasters that have significant impact on communities in terms of loss of life, direct and indirect economic losses, and disruption of…

Bedload transport in rivers: size matters but so does shape!

Bedload transport modelling in rivers, which defines the threshold for pebble movement, takes into account the size and density of pebbles, but does not formally consider particle…

Bridging the gap between geophysics and geology with Generative Adversarial Networks (GANs)

Inverse mapping from geophysics to geology is a difficult problem due to the inherent uncertainty of geophysical data and the spatially heterogeneous patterns (structure) in geolo…

Web-based Data Analytics Framework for Well Forecasting and Groundwater Quality

Groundwater supplies drinking water for over one-third of all Americans. However, with aquifers stressed by overdraft, contamination from land use, and the hydrologic impacts of c…

Stress, rigidity and sediment strength control megathrust earthquake and tsunami dynamics

Megathrust faults host the largest earthquakes on Earth which can trigger cascading hazards such as devastating tsunamis. Determining characteristics that control subduction zone …

Eucytherura myrsinae n. sp. (Ostracoda, Cytheruridae G.W. Müller 1894) im Bereich des Bolboformen-Horizontes der Bohrun…

[…] Aus der Bohrung Wallau B98-BK5 im NE Mainzer Becken wird aus den unteren Mittleren Pechelbronn-Schichten (Unter-Oligozän) die neue Ostracoden-Art Eucytherura myrsinae aus der …

Bohrkernlager des Hessischen Landesamtes für Bodenforschung

[…] Der Beitrag dokumentiert den Bestand des Bohrkernlagers des Hessischen Landesamtes für Bodenforschung zum Stand Februar 1990. Aufgeführt werden eingelagerten Bohrungen mit Ang…

A Source Clustering Approach for Efficient Inundation Modeling and Regional Scale PTHA

For coastal regions on the margin of a subduction zone, near-field megathrust earthquakes are the source of the most extreme tsunami hazards, and are important to handle properly …

Hessen heute – vor dem Hintergrund seiner geologischen Entwicklung

[…] Der Beitrag erläutert die geologische Entwicklung Hessens und deren Einfluss auf Landschaft, Landwirtschaft, Rohstoffvorkommen, Wasserwirtschaft, Besiedlung und wirtschaftlich…

Variability of headwater stream network extents controlled by flow regime and network hydraulic scaling

Stream networks expand and contract through time, impacting chemical export, aquatic ecosystem habitat, and water quality. Although recent advances improve prediction of the exten…

Isotropic and Azimuthally Anisotropic Rayleigh Wave Dispersion Across the Juan de Fuca and Gorda Plates and U.S. Cascad…

We use data from the Cascadia Initiative (CI) amphibious array and the USArray Transportable Array to construct and compare Rayleigh wave isotropic and azimuthally anisotropic pha…

GeospatialVR: A Web-based Virtual Reality Framework for Collaborative Environmental Simulations

This research introduces GeospatialVR, an open-source collaborative virtual reality framework to dynamically create 3D real-world environments that can be served on any web platfo…

Taking the pulse of salt-detached gravity gliding in the eastern Mediterranean

We investigate early-stage salt-detached gliding using a 3D seismic dataset from the Levant Margin in the Eastern Mediterranean, where gravitational instability due to margin upli…

Lochsteine des Ostbrandenburger Braunkohlentiefbaus

[...] Der Autor dokumentiert die historische Bedeutung und Funktion von Lochsteinen im ostbrandenburgischen Braunkohlerevier. Diese Steine dienten der oberirdischen Markierung von…

Hydrogeologic and Geochemical Distinctions in Salar Freshwater Brine Systems

The Salar de Atacama contains one of the world’s most important lithium resources and hosts unique and fragile desert ecosystems. Water use issues of the hyper-arid region have p…

Leaky salt: pipe trails record the history of cross-evaporite fluid escape in the northern Levant Basin, Eastern Medite…

Despite salt being regarded as an extremely efficient, low-permeability hydraulic seal, an increasing number of cross-evaporite fluid escape features have been documented in salt-…

Principal component analysis of seismic facies

Seismic facies analyses are fundamental to the study of sedimentary, tectonic and magmatic systems using seismic reflection data. These analyses generally assume that seismic faci…

Paucity of legacy oil and gas subsurface data onshore United Kingdom: implications for the expansion of low carbon subs…

The decarbonisation of energy systems to achieve net zero carbon emissions will likely see the rapid development of carbon capture and storage, energy storage in the subsurface an…

Neue paläopedologische Befunde zu Habitus und Verbreitung des Finowbodens

[...] Der Fachartikel präsentiert neue Erkenntnisse zur Beschaffenheit und regionalen Verbreitung des Finowbodens, eines zentralen paläopedologischen Leithorizonts in der brandenb…

Seismic diffraction imaging to better characterise mass-transport complexes: examples from the Gulf of Cadiz, south wes…

Mass‐transport complexes (MTCs) are often characterised by small‐scale, discontinuous internal structure, such as slide blocks, rough interfaces, faults and truncated strata. Seis…

Serious Gaming for Water Resources Planning and Hazard Mitigation

Hydrological hazards lead to a broad range of socio-economic and environmental risks. The development of a resilient community and risk reduction heavily rely on the adoption of h…

An imbalancing act: the dynamic response of the Kaskawulsh Glacier to a changing mass budget

The Kaskawulsh Glacier is an iconic outlet draining the icefields of the St. Elias Mountains in Yukon, Canada. We determine and attempt to interpret its catchment-wide mass budget…

Notes on Seismic Source Models in Elastostatics

Seismic source models in elastostatics lay the foundations for the popular earthquake deformation formula derived in Okada (1992), which forms key components for many studies in e…

Inferring Interseismic Coupling along the Lesser Antilles Arc: a Bayesian Approach

The Lesser Antilles subduction zone is a challenging region when it comes to unraveling its seismogenic behavior. Over the last century, the subduction megathrust has been seismic…

The formation and implications of giant blocks and fluid escape structures in submarine lateral spreads

Lateral spread (or ‘spreading’) and submarine creep are processes that occur near the headwalls of both terrestrial landslides and submarine mass-transport complexes (MTCs). Both …

Ein vollständiges Zechsteinprofil im südlichen Odenwald: die hydrogeologische Erkundungsbohrung Langenthal BK2/05

[...] Die Kernbohrung Langenthal BK2/05 im südlichen hessischen Odenwald durchteuft Sedimente des Quartärs, des Unteren Buntsandsteins, des Zechsteins und des Rotliegends und ende…

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