Results 11 to 20 of about 196,921 (308)

The Qujing incoherent scatter radar: system description and preliminary measurements

open access: yesEarth, Planets and Space, 2018
The Qujing incoherent scatter radar (QJISR), the first one in China with the geographic location (25.6°N, 103.8°E), was brought into operation since the spring of 2014.
ZongHua Ding   +4 more
doaj   +1 more source

PAINLEV´E TEST OF A MAGNETOHYDRODYNAMICS SYSTEM [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2015
One approximation of magnetohydrodynamics equations, which describe the cosmic object’s magnetic field, is considered. The analytic properties of a nonlinear system are investigated by Painlev´e test.
G.M. Vodinchar   +2 more
doaj   +1 more source

Wave Propagation in Granular Materials [PDF]

open access: yes, 2005
Wave propagation is a fundamental property of all physical systems. The wave speed is directly related to the compressibility of the system and determines the rate at which local disturbances are propagated into the bulk of the material.
Hostler, Stephen Richard
core   +1 more source

Simulation of ultrasonic lamb wave generation, propagation and detection for an air coupled robotic scanner [PDF]

open access: yes, 2011
A computer simulator, to facilitate the design and assessment of a reconfigurable, air-coupled ultrasonic scanner is described and evaluated. The specific scanning system comprises a team of remote sensing agents, in the form of miniature robotic ...
Keith Worden   +13 more
core   +1 more source

Generation of equations for shell models of turbulence in the Maple system [PDF]

open access: yesEPJ Web of Conferences, 2021
The paper describes a technology for the automated compilation of equations for shell models of turbulence in the computer algebra system Maple. A general form of equations for the coefficients of nonlinear interactions is given, which will ensure that ...
Feshchenko Liubov, Vodinchar Gleb
doaj   +1 more source

Investigating Alfvénic wave propagation in coronal open-field regions [PDF]

open access: yes, 2015
The physical mechanisms behind accelerating solar and stellar winds are a long-standing astrophysical mystery, although recent breakthroughs have come from models invoking the turbulent dissipation of Alfvén waves.
Morton, Richard   +2 more
core   +1 more source

Results of atmospheric-lithospheric observations of acoustic radiation in Kamchatka [PDF]

open access: yesE3S Web of Conferences, 2019
Simultaneous atomspheric-lithospheric acoustic observations have been carried out during autumn-spring periods of 2017-2019 in Kamchatka at “Karymshina” observation site located in the zone of different-rank tectonic faults.
Larionov Igor   +2 more
doaj   +1 more source

Overview of processing and analysis methods for pulse geophysical signals [PDF]

open access: yesE3S Web of Conferences, 2020
The paper discusses the processing and analysis methods for the geoacoustic and electromagnetic emission pulse signals recorded for more than 20 years at the IKIR FEB RAS geodynamic proving ground (Kamchatka Peninsula).
Lukovenkova Olga   +3 more
doaj   +1 more source

Stability analysis of second- and fourth-order finite-difference modelling of wave propagation in orthotropic media [PDF]

open access: yes, 2010
The stability of the finite-difference approximation of elastic wave propagation in orthotropic homogeneous media in the three-dimensional case is discussed.
Veres, Istvan
core   +1 more source

Operative center of the geophysical prognosis in Izmiran [PDF]

open access: yesAnnales Geophysicae, 2005
IZMIRAN was founded about 65 years ago with one of the goals of carrying out geomagnetic prognoses. More or less, this activity has been developed during its entire history, but about 6 years ago this aim became sufficiently feasible due to the ...
A. V. Belov   +5 more
doaj   +1 more source

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