Results 61 to 70 of about 34,661 (210)

Effects of D-region RF heating studied with the Sodankyla ion chemistry model [PDF]

, 2005
International audienceThe upper mesosphere and lower thermosphere, or ionospheric D region, is an atmospheric layer which is difficult to access experimentally.
A. Seppälä, A. Senior, Turunen, T., Ulich, T., Seppälä, A., C.-F. Enell, Enell, C.-F., Honary, F., P. T. Verronen, Marple, S., S. Marple, A. Kero, E. Turunen, Senior, A., Ulich, Th., Turunen, E., Th. Ulich, F. Honary, Verronen, P. T., Kero, A.   +19 more
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Application of Artificial Intelligence in Landslide Susceptibility Assessment: Review of Recent Progress

Remote Sensing
In the current work, authors reviewed the latest research results in landslide susceptibility mapping (LSM) using artificial intelligence (AI) methods.
Muratbek Kudaibergenov, Serik Nurakynov, Berik Iskakov, Gulnara Iskaliyeva, Yelaman Maksum, Elmira Orynbassarova, Bakytzhan Akhmetov, Nurmakhambet Sydyk   +7 more
doaj   +1 more source

Radio-induced incoherent scatter ion line enhancements with wide altitude extents in the high-latitude ionosphere [PDF]

, 2013
[1] Apparent large electron density enhancements deduced from incoherent scatter radar observations during recent high power radio wave injection experiments at the European Incoherent Scatter Scientific Association (EISCAT) facility near Tromsø, Norway ...
Rietveld, M. T., Senior, A., Kosch, M. J., Häggström, I.   +3 more
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The dayside high-latitude trough under quiet geomagnetic conditions: Radio tomography and the CTIP model [PDF]

, 2005
International audienceThe dayside high-latitude trough is a persistent feature of the post-noon wintertime auroral ionosphere. Radio tomography observations have been used to map its location and latitudinal structure under quiet geomagnetic conditions ...
Dewis, K. L., Denton, M.H., Pryse, S. E., Balthazor, R. L., Middleton, H. R., Balthazor, R.L., H. R. Middleton, Dewis, K.L., R. L. Balthazor, Denton, M. H., S. E. Pryse, Pryse, S.E., Middleton, H.R., K. L. Dewis, M. H. Denton   +14 more
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Differential Code Bias Estimation using Multi-GNSS Observations and Global Ionosphere Map

, 2014
Measurements of Global Navigation Satellite System (GNSS) receivers are affected by systematic offsets re- lated to group and phase delays of the signal generation and processing chain.
Hauschild, André, Steigenberger, Peter, Montenbruck, Oliver   +2 more
core   +1 more source

Regional Characteristics of Geomagnetic Activity: Comparative Analysis of Local K and Global Kp Indices

Atmosphere
Geomagnetic activity reflects the complex coupling between the solar wind, magneto-sphere and ionosphere. While the global Kp index serves as a standard proxy for geo-magnetic disturbances, it obscures regional variations linked to local current systems ...
Vitaliy Kapytin, Alexey Andreyev, Vyacheslav Somsikov, Beibit Zhumabayev, Saule Mukasheva, Yekaterina Chsherbulova, Stanislav Utebayev   +6 more
doaj   +1 more source

Climate-Driven Cryospheric Changes and Their Impacts on Glacier Runoff Dynamics in the Northern Tien Shan

Atmosphere
Glaciers in the Northern Tien Shan are a major source of Ile River runoff, supplying water to Kazakhstan’s largest city, Almaty. Under ongoing climate warming, their degradation alters the magnitude and seasonality of river discharge, increasing water ...
Aigul N. Akzharkynova, Berik Iskakov, Gulnara Iskaliyeva, Nurmakhambet Sydyk, Rustam Abdrakhimov, Alima A. Amangeldi, Aibek Merekeyev, Aleksandr Chigrinets   +7 more
doaj   +1 more source

Quiet time F2-layer disturbances: seasonal variations of the occurrence in the daytime sector [PDF]

Annales Geophysicae, 2009
Earlier revealed seasonal/latitudinal variations of the occurrence for positive and negative F2-layer Q-disturbances have been interpreted in the framework of the present-day concept of the thermosphere-ionosphere interaction. The basic process is the
A. V. Mikhailov, A. H. Depueva, V. H. Depuev   +2 more
doaj   +1 more source

Observation of the Large Forbush Decrease Event on 1–10 June 2025 at the Tien Shan Cosmic Ray Station

Atmosphere
An intensive disturbance of the heliosphere originating from a series of solar flares at the end of May 2025 revealed itself as an extremely strong Forbush decrease in the flux of galactic cosmic rays, which was observed at the worldwide network of ...
Alexander Shepetov, Olga Kryakunova, Rustam Koichubayev, Nikolay Nikolayevskiy, Vladimir Ryabov, Botakoz Seifullina, Irina Tsepakina, Valery Zhukov   +7 more
doaj   +1 more source

Space- and ground-based investigations of solar wind-magnetosphere-ionosphere coupling [PDF]

, 2006
This paper provides a brief review of the understanding of the coupled solar wind–magnetosphere–ionosphere system that can be attained from observations of the size of the ionospheric polar caps from space and the ground.
Milan, S. E., Wild, J. A., Draper, N. C., Grocott, A.   +3 more
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