Sudden decrease of atmospherics associated with monsoon clouds

Sen, A. K.

doi:10.1016/0021-9169(66)90016-x

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…The large increase in the monsoon season is mostly due to the active local sources originating from the sea level disturbances, like depression, in the Bay of Bengal [6,9]. in all days showing SFA effect, the level of atmospherics show a further increase due to the discharges from the assemblage of nimbostratus clouds over and around the observing station.…”

Section: Discussionmentioning

confidence: 99%

On some characteristics of tropical atmospherics due to monsoon clouds

Sarkar

Bhattacharya

Sen

1982

Arch. Met. Geoph. Biocl. A.

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SummaryThe field intensity of VLF-atmosphefics recorded over the tropical station, Calcutta (22°34'N, 88°24'E) occasionally exhibit a characteristic fall in association with the ground rainfall during monsoon months. The sudden fall is followed by a pause and a subsequent recorvery thus forming a clipped saw-tooth like appearance. The occurrences and magnitudes of the fall are predominant at 20 kHz in the VLF-band. They mostly occur around local noon and midnight hours. Zusammenfassung Ober Charakteristiken tropischer Atmospherics aus MonsunwolkenDie Feldintensitgt der VLF-Atmospherics, die fiber Calcutta registriert wurde, zeigt gelegenttich einen charakteristischen Abfall in Verbindung mit Regen in den MonsunMonaten. Auf den pl6tzlichen AbfaU folgt eine Unterbrechung und darauf eine Wiederherstellung, so daft sich eine s~igezahnartige Form in der Registrierkurve bildet. Das Vorkommen und die Gr6fien des Abfalls iiberwiegen bei 20 kHz im VLF-Band. Am h~ufigsten kommt der AbfaU um Mittag und um Mittemacht vor.

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Section: Discussionmentioning

confidence: 99%

On some characteristics of tropical atmospherics due to monsoon clouds

Sarkar

Bhattacharya

Sen

1982

Arch. Met. Geoph. Biocl. A.

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Long-period fading of VLF atmospherics

Sen¹

1967

J. Geophys. Res.

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Reports have been made of long‐period fading of VLF atmospherics observed on certain nights [Sachdev, 1958; Gherzi, 1961]. The fading has a quasi‐period of 1–4 hours. The origin of the fading is not yet clearly understood. A recent observation of the fading in Calcutta (lat. 22°34′N; long. 88°24′E; geomagnetic lat. 11°54′N) on 30 kc/s revealed a connection of the phenomenon with geomagnetic activity.

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Regular Behaviour of the Integrated Field Intensity of Atmospherics at Low Frequencies Recorded in Calcutta

Sen

1969

IETE Journal of Research

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Sudden decrease of atmospherics associated with monsoon clouds

Cited by 3 publications

References 3 publications

On some characteristics of tropical atmospherics due to monsoon clouds

On some characteristics of tropical atmospherics due to monsoon clouds

Long-period fading of VLF atmospherics

Regular Behaviour of the Integrated Field Intensity of Atmospherics at Low Frequencies Recorded in Calcutta

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