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Characteristics of discrete VLF falling-tone chorus emissions observed at low latitude ground station Jammu

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Abstract

The discrete VLF chorus emissions recorded at low latitude ground station Jammu (geomag. lat. = 22°26′N, L = 1.17) are reported and their characteristics based on spectral analysis have been carried out. These discrete chorus emissions are falling tone emissions which are rarely observed at low latitude ground stations. These discrete chorus emissions are generated during a strong geomagnetic storm period of 2–7 May, 1998. We have computed the frequency sweep rate, repetition period and source region of the individual chorus elements. It is observed that the sweep rate increases with time.

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Correspondence to Ashutosh K. Singh.

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Singh, A.K., Patel, R.P., Singh, R. et al. Characteristics of discrete VLF falling-tone chorus emissions observed at low latitude ground station Jammu. Earth Planet Sp 61, 1179–1183 (2009) doi:10.1186/BF03352969

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Key words

  • VLF emissions
  • whistler-mode waves
  • geomagnetic storm