Sentences with phrase «ionospheric disturbances»

The factors causing an anomalous wear of Russian pipeline systems are also analyzed, and the methods for reducing their rapid corrosion through taking into account the influence of heliogeomagnetic and ionospheric disturbances are described.

In particular, ionospheric disturbances caused by large - scale phenomena such as the prolonged negative and positive effects observed all over Europe are sufficiently captured in ΔR12eff variation from the onset of the disturbance until the full recovery (Fig. 16).

It is triggered by an alert signal for upcoming ionospheric disturbances obtained from the online analysis of the IMF's observations obtained from ACE spacecraft.

Finally, in a separate project, GBO high school intern Ellie White worked with Observatory staff to construct an instrument using SDR to measure low frequency ionospheric disturbances.

However, we believe that the results obtained indicate that DIAS effective sunspot number can provide a reliable estimator of the average ionospheric disturbance level over a substantial part of Europe and a powerful tool for ionospheric specification applications.

Not exact matches

The prolonged solar minimum in 2006 — 2009 gave us a unique possibility to explore ionospheric behavior under extremely low solar activity conditions, particularly ionospheric reaction to occasional very moderate geomagnetic disturbances.

Based on this, SWIF is able to provide alerts and warnings for upcoming ionospheric storm - time disturbances as well as ionospheric forecasts up to 24 h ahead under all possible conditions.

The experimental behavior supports the storm scenario the traveling atmosphere disturbances (TADs) of auroral origin and changes in the thermospheric wind are the main physical mechanisms driving equatorward - directed and vertical winds which in turn move the plasma along the magnetic field lines and raise the ionospheric peak height.

The analysis of the effects of these magnetic disturbances, occurring within the period 2006 — 2009 on ionospheric F2 - layer, showed significant departure of the main peak parameters from the corresponding 27 - days running means.

To evaluate the effects of geomagnetic disturbances on the ionospheric F2 - layer, we used hourly measurements of foF2 and hmF2 and their 27 - days running means centered on the culmination (minimum Dst) day of each analyzed geomagnetic disturbance.