Results 31 to 40 of about 34,661 (210)

Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter [PDF]

, 2006
International audienceObservations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented.
Tim K. Yeoman (7583066), A. Senior, M. J. Kosch (7595327), I. W. McCrea, M. T. Rietveld (7594184), Rietveld, M. T., Senior, A., T. K. Yeoman, I. W. McCrea (7594871), M. T. Rietveld, Kosch, M. J., M. J. Kosch, A. Senior (3255282), McCrea, I. W., Yeoman, T. K.   +14 more
core   +1 more source

Geodynamic Characterization of Hydraulic Structures in Seismically Active Almaty Using Lineament Analysis

GeoHazards
Monitoring the stability of hydraulic structures such as dams and reservoirs in seismically active regions is essential for ensuring their safety and operational reliability.
Dinara Talgarbayeva, Andrey Vilayev, Tatyana Dedova, Oxana Kuznetsova, Larissa Balakay, Aibek Merekeyev   +5 more
doaj   +1 more source

Estimating Geomagnetically Induced Currents in High‐Voltage Power Lines for the Territory of Kazakhstan

Space Weather, 2023
Extreme solar events, such as powerful solar flares are accompanied by the release of strong solar disturbances, such as coronal mass ejections (CMEs). The impact of CMEs on the Earth's magnetosphere causes geomagnetic storms, which trigger geomagnetic ...
A. B. Andreyev, S. N. Mukasheva, V. I. Kapytin, O. I. Sokolova   +3 more
doaj   +1 more source

Alfvén wave boundary condition for responsive magnetosphere-ionosphere coupling

, 2014
A.J.B.R. thanks STFC for present support through consolidated grant ST/K000993/1 and gratefully acknowledges a Royal Commission for the Exhibition of 1851 Research Fellowship that also assisted this work.The solution of electric fields and currents in a ...
Wright, A.N., Wright, Andrew N., Andrew N. Wright, Russell, A.J.B., Russell, Alexander J.B., Alexander J. B. Russell   +5 more
core   +1 more source

Localized fast flow disturbance observed in the plasma sheet and in the ionosphere [PDF]

, 2005
An isolated plasma sheet flow burst took place at 22:02 UT, 1 September 2002, when the Cluster footpoint was located within the area covered by the Magnetometers-Ionospheric Radars-All-sky Cameras Large Experiment (MIRACLE). The event was associated with
A. Balogh (7591361), Laakso, H., H. Rème, Balogh, A., Klecker, B., N.C. Draper (7591352), Mccrea, I. W., H. Laakso (7591349), Draper, N. C., Adrian Grocott (7590026), A. Grocott, M. André (3683134), Amm, O., McCrea, I., Rème, H., André, M., H. Laakso, Nakamura, R., Draper, N., O. Amm, Lester, M., H. Rème (7591274), I. W. McCrea, Grocott, A., M. Lester, R. Nakamura (7591343), A. Balogh, M. Lester (7589660), M. André, N. C. Draper, I.W. McCrea (7591358), B. Klecker, B. Klecker (7591355), O. Amm (7591346), R. Nakamura   +34 more
core   +1 more source

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

Atmosphere
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, Marat Nurtas, Zhumabek Zhantayev, Beibit Zhumabayev, Ayazhan Kumarkhanova   +4 more
doaj   +1 more source

Regional Ionosphere Mapping By Using Neural Networks

, 2007
Regional ionosphere mapping is necessary to understand the underlying characteristics of ionosphere. In this paper, multilayer perceptrons and radial basis networks, as chosen neural network methods, are used to obtain a map of ionosphere based on a ...
Atila Yilmaz, YILMAZ, ATİLA, Akdogan, Kurtulu Erinc, Kurtulus Erinc Akdoggan, Melike Gurun, Gueruen, Melike   +5 more
core   +1 more source

Determination of the Radius of the Ring Current in the Earth’s Core According to the Data of the INTERMAGNET Network Observatories

Applied Sciences
The geomagnetic dynamo is currently considered the most likely source of the Earth’s main dipole field. However, the radius of the current ring located in the Earth’s core is not reliably known.
Ivan Vassilyev, Inna Fedulina, Zhassulan Mendakulov, Beibit Zhumabayev, Igor Kozin   +4 more
doaj   +1 more source

Accelerated Glacier Area Loss in the Zhetysu (Dzhungar) Alatau Range (Tien Shan) for the Period of 1956–2016

Remote Sensing, 2023
An updated glacier inventory is important for understanding the current glacier dynamics in the conditions of actual accelerating glacier retreat observed around the world.
Serik Nurakynov, Azamat Kaldybayev, Kanat Zulpykharov, Nurmakhambet Sydyk, Aibek Merekeyev, Daniker Chepashev, Aiman Nyssanbayeva, Gulnura Issanova, Gonghuan Fang   +8 more
doaj   +1 more source

VHF coherent radar signals from the E region ionosphere and the relationship to electron drift velocity and ion acoustic velocity [PDF]

, 2002
The Scandinavian Twin Auroral Radar Experiment (STARE) coherent radar system measures the Doppler shifts caused by ∼1 m plasma waves in the high-latitude E region ionosphere.
Nielsen, E., del Pozo, C., del Pozo, C. F., Del-Pozo, Carlos, Williams, P., Williams, P. J. S.   +5 more
core   +1 more source