Periodic and quiescent solar activity effects in the low ionosphere, using SAVNET data

Details Periodic and quiescent solar activity effects in the low ionosphere, using SAVNET data Periodic and quiescent solar activity effects in the low ionosphere, using SAVNET data

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1286..177b&link_type=abstract

PROPAGATION EFFECTS OF VERY LOW FREQUENCY RADIO WAVES: Proceedings of the 1st International Conference on Science with Very Low

Mathematics

Logic

Waveguides, Telescopes, Solar Activity, Waveguides, Transmission Lines, Striplines, Astrometric And Interferometric Instruments, Solar Activity

Scientific paper

Important results have been acquired using the measurements of VLF amplitude and phase signals from the South America VLF Network (SAVNET) stations. This network is an international project coordinated by CRAAM, Brazil in cooperation with Peru and Argentina. It started operating in April 2006, and now counts on eight stations (Atibaia, Palmas, Santa Maria and Estaça~o Antártica Comandante Ferraz in Brazil; Piura, Punta-Lobos and Ica, in Peru; CASLEO, in Argentina). Researches, through the last decades, have demonstrated the versatility of the VLF technique for many scientific and technological purposes. In this work, we summarize some recent results using SAVNET data base. We have obtained daily maximum diurnal amplitude time series that exhibited behavior patterns in different time scales: 1) 1ong term variations indicating the solar activity level control of the low ionosphere; 2) characteristic periods of alternated slow and fast variations, the former being related to solar illumination conditions, and the latter that have been associated with the winter anomaly at high latitudes; 3) 27-days period related to the solar rotation and consequently associated to the solar Lyman-α radiation flux variations, reinforcing earlier theories about the importance of this spectral line for the D-region formation. Finally, we conclude presenting preliminary results of simulation using LWPC, which showed very good agreement at times of observed modal amplitude minima for a given VLF propagation path.

Affiliated with

Also associated with

No associations

Rating

Periodic and quiescent solar activity effects in the low ionosphere, using SAVNET data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Periodic and quiescent solar activity effects in the low ionosphere, using SAVNET data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Periodic and quiescent solar activity effects in the low ionosphere, using SAVNET data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1403570