Results 41 to 50 of about 16,469 (214)

HIGH-SPEED SOLAR WIND AND GEOMAGNETIC ACTIVITY

Radio Physics and Radio Astronomy, 2015
The impact of high-speed solar wind disturbances on the occurrence of geomagnetic storms is analyzed. The solar wind velocity values, determined from scintillation observations at the UTR-2 and URAN-2 Ukrainian decameter radio telescopes are analyzed ...
M. R. Olyak
doaj   +1 more source

Survey and Sequence Strategies for Full‐3D Electrical Resistivity Tomography in Archaeological Sites: A Case Study on a Domus of the Roman Town of Augusta Bagiennorum (NW Italy)

Archaeological Prospection, EarlyView.
ABSTRACT Preliminary geophysical investigations are a cost‐effective and efficient way to screen archaeological sites and locate buried structures. Ground‐penetrating radar (GPR) is one of the most widely used methods for archaeological prospection, but in some sites, it cannot be employed effectively due to the presence of clay or other electrically ...
Andrea Vergnano, Diego Franco, Antonio Merico, Francesca Pace, Sofia Uggè, Cesare Comina   +5 more
wiley   +1 more source

Wavelet analysis of the ionospheric response at mid-latitudes during the April 200 storm using magnetograms and vTEC from GPS [PDF]

, 2013
In this work we pursue the idea of computing a parameter that allows us to estimate the local ionospheric response to a geospheric event that triggers an ionospheric storm. For that, wavelet technique has been chosen because of its ability to analyze non-
Fernandez, Laura Isabel, Meza, Amalia Margarita, Van Zele, Maria Andrea   +2 more
core  

Coronal mass ejections, magnetic clouds, and relativistic magnetospheric electron events: ISTP [PDF]

, 1998
The role of high-speed solar wind streams in driving relativistic electron acceleration within the Earth\u27s magnetosphere during solar activity minimum conditions has been well documented.
Acuna, Baker, Baker, Baker, Baker, Baker, Baker, Baker, Blake, Blake, Burlaga, D. N. Baker, Feldman, G. D. Reeves, G. Rostoker, Gosling, H. E. Spence, Hruska, J. B. Blake, Kahler, Lepping, Li, Li, M. G. Henderson, Mayaud, Nishida, Ogilvie, Paulikas, Perreault, R. S. Selesnick, Reeves, Rostoker, Rostoker, S. G. Kanekal, T. I. Pulkkinen, Williams, X. Li   +36 more
core   +2 more sources

Spremembe v gostoti energije magnetnega polja Zemlje na observatoriju PIA, Slovenija, med geomagnetno nevihto G5 11. maja 2024 (= Changes in the energy density of the Earth's magnetic field at the PIA, Slovenia, observatory during the G5 Geomagnetic Storm on May 11, 2024)

Geodetski Vestnik
Geomagnetic storms are the largest disturbance in the Earth's magnetic field. On May 11, 2024, a geomagnetic storm occurred at the peak of the 25th solar cycle, reaching the highest level (G5) on the planetary scale.
Rudi Čop
doaj   +1 more source

Exploration of the use of short‐wave infrared radiances in weather forecasts model Part II: Data assimilation and forecast impact assessment

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The standalone non‐local thermodynamic equilibrium (NLTE) bias correction schemes, utilizing a look‐up‐table and a linear regression method developed in Part I and new quality control procedures for short‐wave infrared radiances (SWIR), were tested within a data assimilation framework.
Agnes H. N. Lim, Zhenglong Li, Di Di, James A. Jung   +3 more
wiley   +1 more source

Prediction Space Weather Using an Asymmetric Cone Model for Halo CMEs

, 2007
Halo coronal mass ejections (HCMEs) are responsible of the most severe geomagnetic storms. A prediction of their geoeffectiveness and travel time to Earth's vicinity is crucial to forecast space weather.
A. Dal Lago, C. Wu, D.F. Webb, G. Michalek, G. Michalek, G. Michalek, G. Michalek, G.E. Brueckner, G.M. Lindsay, H. Cremades, H. Xie, H. Xie, H.V. Cane, J. Chen, J. Chen, J. Chen, J. Krall, J. Zhang, J.-P. Delaboudiniére, K.P. Dere, K.W. Ogilvie, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Srivastava, O.C. Cyr St., P.K. Manoharan, R.P. Lepping, S. Yashiro, S. Yashiro, S.P. Plunkett, S.W. Kahler, T.G. Forbes, V. Yurchyshyn, X.P. Zhao, Y.-J. Moon   +39 more
core   +1 more source

Halo Coronal Mass Ejections during Solar Cycle 24: reconstruction of the global scenario and geoeffectiveness [PDF]

, 2017
In this study we present a statistical analysis of 53 fast Earth-directed halo CMEs observed by the SOHO/LASCO instrument during the period Jan. 2009-Sep.
Messerotti, Mauro, Poedts, Stefaan, Rodriguez, Luciano, Scolini, Camilla   +3 more
core   +4 more sources

Synchronous machine performance under geomagnetic disturbances

High Voltage, 2021
Geomagnetic disturbances (GMDs) are known to disturb power system equipment performance. The danger is associated with geomagnetically induced currents (GICs) occurring at the Earth's surface during GMD.
Ilja Boguslawsky, Nikolay Korovkin, Victor Popov, Olga Sokolova   +3 more
doaj   +1 more source

Multiterminal High‐Voltage Direct Current Projects: A Comprehensive Assessment and Future Prospects

High Voltage, EarlyView.
ABSTRACT Multiterminal high‐voltage direct current (MT‐HVDC) systems are an important part of modern power systems, addressing the need for bulk power delivery and efficient renewable energy integration. This paper provides a comprehensive overview of recent advances in MT‐HVDC technology, including launched projects and ongoing initiatives.
Mohammad Hossein Mousavi, Hassan Moradi, Kumars Rouzbehi, Vijay K. Sood   +3 more
wiley   +1 more source