Results 31 to 40 of about 127,101 (245)

Classifying Seismic Events Linked to Solar Activity: A Retrospective LSTM Approach Using Proton Density

open access: yesAtmosphere
The influence of solar activity on seismic activity is a subject of debate. Previous studies have shown that there is sometimes a correlation and sometimes a contradiction between solar activity maxima and large earthquakes.
Aizhan Altaibek   +4 more
doaj   +1 more source

Synchronous NmF2 and NmE daytime variations as a key to the mechanism of quiet-time F2-layer disturbances [PDF]

open access: yesAnnales Geophysicae, 2007
The observed NmF2 and NmE variations were analyzed for the periods of positive and negative quiet-time F2-layer disturbances (Q-disturbances) observed in the midlatitude daytime F2-layer to specify the mechanism of their origin. The noontime δNmF2 and
A. V. Mikhailov   +2 more
doaj   +1 more source

Long-Term Changes and Trends in the F2 Layer Critical Frequency over Alma-Ata (Kazakhstan)

open access: yesAtmosphere
The long-term variability and trends in the F2 layer critical frequency variations over Alma-Ata [43.25 N, 77.92 E] for the period 07.1957–04.2018 are studied using near-midday, near-midnight, and hourly median foF2 values.
Galina Gordiyenko   +3 more
doaj   +1 more source

Winter thunderstorms in Kamchatka [PDF]

open access: yesE3S Web of Conferences, 2019
Winter thunderstorms in Kamchatka are rare meteorological phenomena. To investigate the nature of this phenomenon, time variations of quasistatic electric field and meteorological quantities at «Paratunka» observatory, IKIR FEB RAS (φ = 52:97° N; λ = 158:
Smirnov Sergey   +3 more
doaj   +1 more source

Airborne Ground Penetrating Radar, Field Test

open access: yesRemote Sensing, 2021
Deployment of a ground penetrating radar (GPR) on a flying machine allows one to substantially extend the application area of this geophysical method and to simplify carrying out large surveys of dangerous and hard-to-reach terrain, where usual ground ...
Dmitry Edemsky   +3 more
doaj   +1 more source

Advancements in Remote Sensing for Monitoring and Risk Assessment of Glacial Lake Outburst Floods

open access: yesGeosciences
Glacial Lake Outburst Floods (GLOFs) have emerged as a critical threat to high-mountain communities and ecosystems, driven by accelerated glacier retreat and lake expansion under climate change.
Serik Nurakynov   +3 more
doaj   +1 more source

Impact of Various Disturbance Sources on the Atmospheric Electric Field and Thunderstorm Activity of the Northern Tien-Shan

open access: yesAtmosphere, 2023
Features of the manifestations of various sources of disturbances in the atmospheric electric field at the Tien-Shan high-mountain station have been studied, and the statistical relationship between solar and thunderstorm activity has been established ...
Valentina Antonova   +3 more
doaj   +1 more source

Optimal economic and emission dispatch of photovoltaic integrated power system using firefly algorithm [PDF]

open access: yes, 2020
The main purpose of Economic Load Dispatch (ELD) is to determine the optimal output of generating units to meet the power demand at lowest possible cost and subjected to the operational constraints. Various ELD optimization methods have been developed in
Muhamad Salim, Muhamad Solahuddin
core  

Influence of the hypermagnetic field noise on the baryon asymmetry generation in the symmetric phase of the early universe

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We study a matter turbulence caused by strong random hypermagnetic fields (HMFs) that influence the baryon asymmetry evolution due to the Abelian anomalies in the symmetric phase in the early Universe.
Maxim Dvornikov, Victor B. Semikoz
doaj   +1 more source

Observation of the Ionosphere in Middle Latitudes during 2009, 2018 and 2018/2019 Sudden Stratospheric Warming Events

open access: yesAtmosphere, 2021
The ionospheric weather is affected not only from above by the Sun but also from below by processes in the lower-lying atmospheric layers. One of the most pronounced atmospheric phenomena is the sudden stratospheric warming (SSW).
Zbyšek Mošna   +6 more
doaj   +1 more source

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