Results 61 to 70 of about 817 (210)

Unveiling Ionospheric Response to the May 2024 Superstorm With Low‐Earth‐Orbit Satellite Observations

open access: yesSpace Weather, Volume 23, Issue 4, April 2025.
Abstract The space weather event on 10–11 May 2024 was a high‐impact geomagnetic storm, resulting in a SYM‐H index decrease to −518 nT, the lowest level registered in several decades. We investigated the response of the Earth's ionosphere during the main phase of this storm using a comprehensive data set of ionospheric observations (in situ plasma ...
Irina Zakharenkova   +7 more
wiley   +1 more source

Negative emissions—Part 3: Innovation and upscaling

open access: yesEnvironmental Research Letters, 2018
We assess the literature on innovation and upscaling for negative emissions technologies (NETs) using a systematic and reproducible literature coding procedure.
Gregory F Nemet   +9 more
doaj   +1 more source

New Insights on the Crustal Deformation in the Eastern Betics From Densified GNSS Data

open access: yesTectonics, Volume 44, Issue 2, February 2025.
Abstract The Eastern Betic cordillera, southeastern Spain, is characterized by slow tectonic deformation rates and moderate seismicity. Great uncertainties persist regarding the precise kinematics of the main fault system within the region, the Eastern Betic Shear Zone (EBSZ). We present a new GNSS (Global Navigation Satellite System) velocity field in
J. Portela   +5 more
wiley   +1 more source

Ionospheric Response to the 24–27 February 2023 Solar Flare and Geomagnetic Storms Over the European Region Using a Machine Learning–Based Tomographic Technique

open access: yesSpace Weather, Volume 23, Issue 1, January 2025.
Abstract Two solar flares accompanied by coronal mass ejections (CMEs) occurred on 24–25 February (DOY 055–056), 2023, resulting in a large magnetic storm on DOY 058. We reconstructed the ionospheric electron density (IED) in Europe to analyze the spatial distribution of ionosphere and its temporal evolution during this period. Computerized ionospheric
Ting Li   +7 more
wiley   +1 more source

Identification of the spatial position of permanent GPS stations in the Baltic region

open access: yesAviation, 2012
Since the last decade of the 20th century, data on repeated measurements from the Global Positioning System (hereinafter referred to as GPS) have been commonly used globally to investigate the motion of the Earth's crust. With the use of data on repeated
Daiva Levinskaitė
doaj   +1 more source

Quality control in digital breast tomosynthesis: compliance of two phantoms with the EUREF protocol [PDF]

open access: yes, 2023
Ever since the integration of Digital Breast Tomosynthesis (DBT) into breast cancer screening programmes, it has been a European endeavour to draw up standard guidelines for the assessment of the imaging performance of DBT systems.
Sisi, Azzurra
core  

Carbon border adjustments or climate clubs: Impacts on African agricultural sectors under different cooperative scenarios

open access: yesThe World Economy, Volume 48, Issue 1, Page 119-152, January 2025.
Abstract Despite the rapid acceleration of climate change, international climate negotiations have yet to implement effective mitigation action. This failure can be attributed to the phenomenon of free‐riding behaviours and the adverse effects of unilateral abatement policies, such as carbon leakage.
Andrea M. Bassi   +4 more
wiley   +1 more source

Blockchain Technology and Electricity Wholesale Markets: Expert Insights on Potentials and Challenges for OTC Trading in Europe

open access: yesEnergies, 2019
In this manuscript, we investigate the adoption of blockchain for over-the-counter (OTC) electricity wholesale trading under the EU regulatory framework.
Carol Inoue Dick, Aaron Praktiknjo
doaj   +1 more source

Kerva city EUREF

open access: yes, 2017
Diplomityö käsittelee Aaltoyliopiston opiskelijoiden vuonna 2013 kurssityönä, Keravan Kaupungin tilauksesta, mittamaa E4-luokan EUREF-FIN-kiintopisteverkon tihennystä, sekä mittaushavaintojen jälkikäsittelyä E4-luokkaan hyväksyttäväksi ...
Turto, Henri
core  

Ionospheric TEC Forecast Using Bi‐LSTM With the Adam Optimizer During X‐Class Solar Flares Occurred in the Year 2024 and Validation With IRI‐2020

open access: yesAdvances in Astronomy, Volume 2025, Issue 1, 2025.
Satellite communication and navigation systems have become more essential to everyday life, but at the same time, understanding the effect of solar activity on these systems is vital. Total electron content (TEC) is a key factor affecting satellite signals.
Sarat C. Dass   +7 more
wiley   +1 more source

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