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Explosion mechanisms at Arenal volcano, Costa Rica: An interpretation from integration of seismic and Doppler radar data
(2012-01-21)
We execute an integrated analysis of broadband seismic and Doppler radar data to gain insights into the subsurface mechanisms that drive repetitive, mildly explosive activity of Arenal volcano (Costa Rica). We find large ...
Mid‐latitude E region field‐aligned irregularities observed with the MU radar
(American Geophysical Union, 1991-09)
Fine structures E region field-aligned irregularities were observed on June 24–25, 1989, with the MU radar at Shigaraki, Japan (34.9N, 136.1E; geomagnetic latitude 25.0N). The 3.2-m scale irregularities were observed with ...
Oblique VHF radar spectral studies of the equatorial electrojet
(American Geophysical Union, 1975-04-01)
A new narrow‐beam antenna at the Jicamarca Observatory permits oblique (zenith angle, 25°) radar spectral studies of the electrojet with an altitude resolution down to 1.1 km. Only daytime observations are possible presently, ...
Driving Influences of the Doppler Flash Observed by SuperDARN HF Radars in Response to Solar Flares
(American Geophysical Union, 2022-06)
Sudden enhancement in high-frequency absorption is a well-known impact of solar flare-driven Short-Wave Fadeout (SWF). Less understood, is a perturbation of the radio wave frequency as it traverses the ionosphere in the ...
Evaluación de un radar FMCW como herramienta didáctica en las carreras de Ingeniería Automotriz y Telecomunicaciones
(2021-01)
En las últimas décadas los sistemas avanzados de
asistencia al conductor (ADAS) han evolucionado
hasta estar disponibles en gran parte de los vehículos fabricados hoy en día; mantener actualizada la
enseñanza en esta ...
Implementación de un operador de observaciones de radar para radares de banda C en el modelo WRF
(Centro Argentino de Meteorólogos, 2017)
Doppler measurements with a digital ionosonde: Technique and comparison of results with incoherent scatter data
(American Geophysical Union, 1982-09)
A simple technique for measuring the amplitude and Doppler shift of vertically reflected HF echoes has been implemented for the Arecibo digital ionosonde. This technique can easily be adapted to other digital ionosondes ...
Numerical modeling of lower stratospheric Doppler ducted gravity waves over Jicamarca, Peru
(European Geosciences Union (EGU), 2011-07)
Persistent jet structures along zonal and meridional fields, believed to be caused by stationary gravity waves, were detected in February 1999 in MST wind measurements of the troposphere and lower stratosphere over Jicamarca, ...
VHF radar interferometry measurements of vertical velocity and the effect of tilted refractivity surfaces on standard doppler measurements
(American Geophysical Union, 1991-03)
At VHF wavelengths, aspect sensitivity may result in an apparent beam direction that is off vertical even for a nominally vertically pointing beam direction if the refractivity surfaces responsible for the scatter are ...