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Earth, Planets and Space

Table 1 Comparison between the frequencies separation obtained from observations of double spectral resonance structures observed on December 4, 2018 and from analytical model

From: Observation of ionospheric Alfven resonator with double spectral resonance structures at low latitude station, Shillong (\(dipole L=1.08\))

UT

Observed \(\Delta f\) (Hz)

Analytical \(\Delta {f}_{PR}\) (Hz)

Polyakov and Rapoport [1981]

Analytical \(\Delta {{f}_{PR}}_{mod}\) (Hz)

Modified by including inclination angle

Small \(\Delta f\)

Large \(\Delta f\)

15

–

1.5

1.8424

1.1708

16

0.4062

1.625

2.5111

1.5957

17

0.3125

1.5

2.7355

1.7378

18

0.3594

1.375

2.1478

1.3642

19

0.2960

1.6875

1.5664

0.9953

20

0.3125

1.6875

1.3181

0.8377

21

–

1.6875

1.3781

1.0276

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