[PDF] Top 20 A study of atmospheric gravity waves and travelling ionospheric disturbances at equatorial latitudes

... Abstract. A global coupled thermosphere-ionosphere- plasmasphere model is used to simulate a family of large-scale imperfectly ducted atmospheric gravity waves (AGWs) and ... Voir le document complet

... CIRES/University of Colorado, NOAA Space Environment Laboratory, 325 Broadway, Boulder, CO 80303, USA Received: 15 March 1996 / Revised: 12 February 1997 / Accepted: 24 February 1997 ...results of a ... Voir le document complet

... feature of the response of a rotating fluid to gravity is that it does not adjust to a state of rest, but rather to an equilibrium which contains more potential energy than does ... Voir le document complet

... to a change in the global thermo- spheric wind circulation system. As a consequence of this high-latitude heating and expansion, equatorward directed neutral winds are generated which lift up ... Voir le document complet

... launch of a Minuteman-II missile on 8 July 2000 (UTC) is processed to reveal traveling ionospheric disturbance (TID) all over the network on average 15 min after the ...occurring at one single ... Voir le document complet

... 5.5 at section 5.(e)). The divergence of the resolvent operator when k → 0 is worse for ε = 0, than for ε 6= 0, as can be seen on formula (40) of (Iooss 1999), and in subsequent expressions ... Voir le document complet

... framework of the French-Ivorian participation to the IEEY, a network of 10 electromag- netic stations were installed at African ...aim of this experiment was twofold: ®rstly, to ... Voir le document complet

... solar and geomagnetic ...kinds of effects: mean effects and dynamic ...delay and the signal phase advance when going through the ionosphere. At the first order this delay depends on the ... Voir le document complet

... prises of two ...mode and its eigenfrequency and damping rate strongly depend on ...orders of magnitude smaller than that for the shear Alfv´en ...enhancement of the damping rate ... Voir le document complet

... periods. At 22:18±22:30 UT, when the drift is approximately per- pendicular to the tomographic image plane, the tilt ofthe ionosphere lies well within the heating ...hand, at 17:46±18:01 UT the tilt extends ... Voir le document complet

... ellipse, and the asterisk and plus symbols demonstrate that the disturbance wind vector rotates anti- ...inertial gravity waves, the anti-clockwise rotating hodograph indi- cates that in the ... Voir le document complet

... More specifically, we note the following features: G the CTIDs and ATIDs are slower/similar and faster propagating wave fronts, respectively, H for the tsunami arrival at epicentre dista[r] ... Voir le document complet

... FW travelling waves increase during visual stimulation, whereas BW waves decrease, in-line with their putative functional role in information transmission ( Pang et ...sake of comparison, we ... Voir le document complet

... storm at 1218 h 75  E on 24 October ...variations of the various parameters for the period 22 to 25 October ...depressions of storm time H ®eld at ABG with a magnitude of ÿ100 ... Voir le document complet

... reducibility of quasilinear elliptic systems in infinite cylindrical ...to a suitable neighborhood of 0, is equivalent to a flow on a finite dimensional ...validity of a ... Voir le document complet

... three equatorial ionosondes of the IEEY network in West Africa have revealed small-scale daytime peak F2 structures, super- posed on the slowly varying minimum or ``trough'' distribution in the ‹5° magnetic ... Voir le document complet

... look at a series of ten days for the X component in December 1989, as shown in ...Three of the observatories CTA, NEW and TOO, are on the east- ern side of Australia while the ... Voir le document complet

... first of a two-part study devoted to developing tools for a systematic classification of the wide variety of atmospheric waves expected on slowly rotating planets ... Voir le document complet

... occur at latitudes both above and below that corresponding to field-aligned which is ...three of the passes the peak occurs south of field-aligned (the minimum of the 2 curve), ... Voir le document complet

... to a point source on Earth’s surface. The code has now been used in a few studies ...]), and we continue to make improvements, including reducing the approximations made in the ...]), and ... Voir le document complet