Automated detection of Pi 2 pulsations using wavelet analysis: 2. An application for dayside Pi 2 pulsation study

DOI PDF Web Site Web Site Web Site 4 Citations 44 References

Search this article

Abstract

We investigated statistical characteristics of dayside Pi 2 pulsations observed at Mineyama (25.5° geomagnetic latitude) from November 1994 through June 1996, using an algorithm to detect Pi 2 pulsations which was introduced in Part 1 of the accompanying paper. We obtained the following results. (1) The ratio of the number of Pi 2 pulsations on the dayside (06-18 MLT) to that on the nightside (18-06 MLT) was about 31%. (2) The polarization of the dayside Pi 2 pulsations changed from right-handed before local noon to left-handed after local noon. (3) Wave power of dayside Pi 2 pulsations in the H-component has a peak around local noon and dips on both dawn and dusk sides. (4) Frequency of the fundamental wave is ranging from 9 mHz to 30 mHz with dominant frequency of 17-24 mHz, and frequency ratios of the first three harmonics are 1 : (1.7 ± 0.5) : (2.3 ± 0.7). We found that the magnetospheric cavity model can explain most of these observational results.

Journal

  • Earth, Planets and Space

    Earth, Planets and Space 51 (1), 23-32, 1999

    Society of Geomagnetism and Earth, Planetary and Space Sciences, The Seismological Society of Japan, The Volcanological Society of Japan , The Geodetic Society of Japan , The Japanese Society for Planetary Sciences

Citations (4)*help

See more

References(44)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top