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Gravity waves on a random bottom: exact dispersion-relation
(Taylor & Francis Ltd, 2021-05)
In a recent paper [Cáceres MO, Comments on wave-like propagation with binary disorder. J. Stat. Phys. 2021;182(36):doi.org/10.1007/s10 955-021-02699-0.], the evolution of a wave-like front perturbed by space-correlated ...
Surface wave energy absorption by a partially submerged bio-inspired canopy
(IOP Publishing, 2018-05)
Aquatic plants are known to protect coastlines and riverbeds from erosion by damping waves and fluid flow. These flexible structures absorb the fluid-borne energy of an incoming fluid by deforming mechanically. In this ...
Imaging radar observations and nonlocal theory of large-scale plasma waves in the equatorial electrojet
(European Geosciences Union (EGU), 2002)
Large-scale (λ∼1 km) waves in the daytime and nighttime equatorial electrojet are studied using coherent scatter radar data from Jicamarca. Images of plasma irregularities within the main beam of the radar are formed using ...
Coexistence of acoustic waves and turbulence in low Mach number compressible flows
(American Institute of Physics, 2019-04-04)
In this work, direct numerical simulations of the compressible fluid equations in turbulent regimes are performed. The behavior of the flow is either dominated by purely turbulent phenomena or by the generation of sound ...
Numerical study of the generation and propagation of ultralow-frequency waves by artificial ionospheric F region modulation at different latitudes
(European Geosciences Union, 2016-09-21)
Powerful high-frequency (HF) radio waves can be used to efficiently modify the upper-ionospheric plasmas of the F region. The pressure gradient induced by modulated electron heating at ultralow-frequency (ULF) drives a ...
Local generation of love surface waves at the edge of a 2D alluvial valley
(Seismological Society of AmericaUniversidad EAFIT. Departamento de Ingeniería Mecánica, 2018-08-01)
This work deals with the local generation of Love surface waves at the edge of an alluvial valley that is formed by a soft layer with dipping interface. These waves are extracted from the system response due to the incidence ...
Localized field-aligned currents and 4-min TEC and ground magnetic oscillations during the 2015 eruption of Chile’s Calbuco volcano
(SpringerOpen, 2016-08-31)
The Calbuco volcano in southern Chile erupted on April 22, 2015. About 2 h after the first eruption, a Swarm satellite passed above the volcano and observed enhancement of small-amplitude (~0.5 nT) magnetic fluctuations ...
The Role of Gravity Wave Drag Optimization in the Splitting of the Antarctic Vortex in the 2002 Sudden Stratospheric Warming
(American Geophysical Union, 2018-07)
The impact of gravity wave drag on the Antarctic sudden stratospheric warming (SSW) in 2002 is examined through a mechanistic middle atmosphere model combined with a variational data assimilation system. Significant ...
Gravity wave modulation of gradient drift instabilities in mid-latitude sporadic E irregularities
(American Geophysical Union, 1991-07)
Recent E region VHF backscatter echoes observed by the MU radar at mid-latitudes show quasiperiodic striations with a fairly constant range vs. time tilt in a RTI display. These features are explained in terms of gravity ...
Spread of highly localized wave-packet in the tight-binding lattice: Entropic and information-theoretical characterization
(Academic Press Inc Elsevier Science, 2011-10)
The spread of a wave-packet (or its deformation) is a very important topic in quantum mechanics. Understanding this phenomenon is relevant in connection with the study of diverse physical systems. In this paper we apply ...