Results 21 to 30 of about 196,921 (308)
Modified Green's Functions for Shallow Water Acoustic Wave Propagation [PDF]
, 2004 This article presents an assessment of alternative forms of the Green’s function for boundary element simulations of acoustic wave propagation in shallow water. It is assumed that the problem is two-dimensional, the source of acoustic disturbance is time-
Santiago, J A F S, Wrobel, L C
core +1 more source
Atmosphere, 2020 The paper is devoted to the description of observations over atmospheric and electric effects from volcanic eruptions on Kamchatka peninsula (Russia) and perspectives of their development.
Pavel P. Firstov +7 more
doaj +1 more source
Estimation earthquake occurrence probability in Kamchatka region based on seismological and complex of ionospheric precursors [PDF]
EPJ Web of Conferences, 2021 In this paper the authors present the method of estimation of a region, waiting period and probability of strong earthquakes with KS ≥ 13.5 (M ≥ 6.0) in Kamchatka region based on the combination of mid-term and short-term predictive signs accompanying ...
Boganov Vadim, Pavlov Aleksey
doaj +1 more source
Методика выделения информативных признаков в сигналах геоакустической эмиссии
Информатика и автоматизация, 2019 Исследования геоакустической эмиссии в сейсмоактивном регионе на Камчатке показывают, что при подготовке землетрясений и последующей релаксации поля локальных напряжений в пункте наблюдений в геоакустических сигналах возникают ярко выраженные импульсные ...
Yuri Igorevich Senkevich +3 more
doaj +1 more source
IET Microwaves, Antennas & Propagation, 2021 This study reports a class of balanced‐to‐unbalanced (BTU) and balanced‐to‐balanced (BTB) filtering rat‐race couplers (FRCs) based on multilayer substrate integrated waveguide (SIW) cavities.
Xian Wang +5 more
doaj +1 more source
Earth, Planets and Space, 2022 The most important aim in interpreting an oblique ionogram is to obtain the accurate Junction Frequencies (JFs) of the ordinary (O) and extraordinary (X) mode.
Sun FengJuan +5 more
doaj +1 more source
Analysis of ionospheric parameters during Solar events and geomagnetic storms
E3S Web of Conferences, 2016 The paper shows new methods of analysis of ionospheric and magnetic data applying the models of multicomponent constructions (MCM models) developed by the authors.
Mandrikova Oksana +3 more
doaj +1 more source
Four simplified gradient elasticity models for the simulation of dispersive wave propagation [PDF]
, 2008 Gradient elasticity theories can be used to simulate dispersive wave propagation as it occurs in heterogeneous materials. Compared to the second-order partial differential equations of classical elasticity, in its most general format gradient elasticity ...
Pichugin, AV +7 more
core +1 more source
Propagation of Waves in Helical Wave Guides [PDF]
Journal of Applied Physics, 1958 The field configuration near the conductors of a helical wave guide is obtained from the solution of the spatial-wave equation for a developed helix. This solution is first obtained for the case of tape conductors and then adapted to elliptical (including circular) conductors by conformal transformation.
openaire +3 more sources
Design of a polarization selective surface for co‐channel interference suppression
Electronics Letters, 2022 In this paper, a novel design of polarization selective surface (PSS) is proposed for co‐channel interference (CCI) suppression. By establishing a switchable doublet topology, two types of second‐order filtering responses with two transmission zeros are ...
Xian Wang +4 more
doaj +1 more source