Results 21 to 30 of about 127,101 (245)

The STM32 microcontroller based pulse intensity registration system for the neutron monitor

open access: yesEPJ Web of Conferences, 2017
We present the outlines of a new microcontroller based data acquisition system which is aimed for reliable operation in a typical cosmic ray particle registration experiment.
Shepetov Alexander   +5 more
doaj   +2 more sources

Pulsed flows at the high-altitude cusp poleward boundary, and associated ionospheric convection and particle signatures, during a cluster - FAST - SuperDARN - sondrestrom conjunction under a southwest [PDF]

open access: yes, 2004
Particle and magnetic field observations during a magnetic conjunction Cluster 1-FAST-Søndrestrøm within the field of view of SuperDARN radars on 21 January 2001 allow us to draw a detailed, comprehensive and self-consistent picture at three heights of ...
Balogh, A.   +15 more
core   +8 more sources

Methods and Algorithms of Subsurface Holographic Sounding

open access: yesRemote Sensing, 2022
In our experiments, we develop and test portable multi-element receiver antenna arrays, electrically scanned in order to immediately obtain a recognizable image of subsurface objects.
A. V. Popov   +5 more
doaj   +1 more source

Ionosphere/Plasmasphere sounding with ground and space-based GNSS observations [PDF]

open access: yes, 2016
Applying a methodology developed and tested in previous studies, the contribution from the ionospheric and plasmaspheric regions to the total electron content (measured by ground receivers) is analyzed.
González Casado, Guillermo   +3 more
core   +1 more source

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

open access: yesAnnales 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   +2 more
doaj   +1 more source

Magnetospheric signatures of ionospheric density cavities observed by cluster [PDF]

open access: yes, 2015
AJBR ackowledges support from STFC under consolidated grant ST/K000993/1.We present Cluster measurements of large amplitude electric fields corre- lated with intense downward field-aligned currents, observed during a nightside crossing of the auroral ...
Aikio   +20 more
core   +3 more sources

Weak, Quiet Magnetic Fields Seen in the Venus Atmosphere. [PDF]

open access: yes, 2016
The existence of a strong internal magnetic field allows probing of the interior through both long term changes of and short period fluctuations in that magnetic field. Venus, while Earth's twin in many ways, lacks such a strong intrinsic magnetic field,
Baumjohann, W   +4 more
core   +1 more source

Monitoring of Gamma Radiation Prior to Earthquakes in a Study of Lithosphere-Atmosphere-Ionosphere Coupling in Northern Tien Shan

open access: yesAtmosphere, 2022
Monitoring radiation background in the near-surface atmosphere and gamma rays, geoacoustic emission, and temperature in a borehole at 40 m depth, as well as Doppler sounding on a low-inclined radio pass, proceeded at the Tien Shan mountain station (3340 ...
Nazyf Salikhov   +8 more
doaj   +1 more source

Inhomogeneous structure of the high-latitude ionosphere as observed at Norilsk [PDF]

open access: yes, 2001
In March and August/September 1995, February 1996, and in March-April 1998, observations of the inhomogeneous structure of the high-latitude ionosphere were carried out at Norilsk (geomagnetic latitude and longitude are 64.2 N and 160.4 E, and L=5.2 ...
Lipko, Yu. V.
core   +4 more sources

Ionospheric convection and equivalent ionospheric currents in the dayside high‐latitude winter ionosphere [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 1999
Ionospheric convection inferred from Super Dual Auroral Radar Network (SuperDARN) HF radar measurements is compared with an equivalent ionospheric convection derived from ground magnetometer data in the dayside winter high‐latitude ionosphere. Although there was general agreement between observed convection patterns produced by radars and magnetometers,
W. Lyatsky   +5 more
openaire   +2 more sources

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