VLF Signal Anomalies During Cyclone Activity in the Atlantic Ocean

S. NaitAmor; M. B. Cohen; Sushil Kumar; O. Chanrion; T. Neubert

doi:10.1029/2018GL078988

VLF Signal Anomalies During Cyclone Activity in the Atlantic Ocean

S. NaitAmor^*, M. B. Cohen, Sushil Kumar, O. Chanrion, T. Neubert

^*Corresponding author for this work

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Abstract

In this paper we present ionospheric disturbances during the simultaneous presence of two to three Large Meteorological Systems, classified as hurricanes and tropical storms, in the Atlantic Ocean from August to November 2016. The ionospheric disturbances were detected by very low frequency (3–30 kHz) signals from two North American transmitters observed in Algiers (36.75°N, 03.47°E). The results show clear anomalies in the amplitude both at nighttime and at daytime. At nighttime, the anomalies were observed in association with all Large Meteorological Systems even at low stage of storm intensity (tropical depression). The anomalies showed periodicities between 2 and 3 hr with a strong decrease in the signal amplitude. The wave-like features were confirmed by the mother wavelet analysis of the normalized signal amplitude. These signal anomalies may result from traveling ionospheric disturbances generated by tropical storms and hurricanes associated gravity waves.

Original language	English
Journal	Geophysical Research Letters
Volume	45
Issue number	19
Pages (from-to)	10,185-10,192
ISSN	0094-8276
DOIs	https://doi.org/10.1029/2018GL078988
Publication status	Published - 2018

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NaitAmor et al 2018 Geophysical Research LettersFinal published version, 1.56 MB

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title = "VLF Signal Anomalies During Cyclone Activity in the Atlantic Ocean",

abstract = "In this paper we present ionospheric disturbances during the simultaneous presence of two to three Large Meteorological Systems, classified as hurricanes and tropical storms, in the Atlantic Ocean from August to November 2016. The ionospheric disturbances were detected by very low frequency (3–30 kHz) signals from two North American transmitters observed in Algiers (36.75°N, 03.47°E). The results show clear anomalies in the amplitude both at nighttime and at daytime. At nighttime, the anomalies were observed in association with all Large Meteorological Systems even at low stage of storm intensity (tropical depression). The anomalies showed periodicities between 2 and 3 hr with a strong decrease in the signal amplitude. The wave-like features were confirmed by the mother wavelet analysis of the normalized signal amplitude. These signal anomalies may result from traveling ionospheric disturbances generated by tropical storms and hurricanes associated gravity waves.",

author = "S. NaitAmor and Cohen, {M. B.} and Sushil Kumar and O. Chanrion and T. Neubert",

year = "2018",

doi = "10.1029/2018GL078988",

language = "English",

volume = "45",

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journal = "Geophysical Research Letters",

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TY - JOUR

T1 - VLF Signal Anomalies During Cyclone Activity in the Atlantic Ocean

AU - NaitAmor, S.

AU - Cohen, M. B.

AU - Kumar, Sushil

AU - Chanrion, O.

AU - Neubert, T.

PY - 2018

Y1 - 2018

N2 - In this paper we present ionospheric disturbances during the simultaneous presence of two to three Large Meteorological Systems, classified as hurricanes and tropical storms, in the Atlantic Ocean from August to November 2016. The ionospheric disturbances were detected by very low frequency (3–30 kHz) signals from two North American transmitters observed in Algiers (36.75°N, 03.47°E). The results show clear anomalies in the amplitude both at nighttime and at daytime. At nighttime, the anomalies were observed in association with all Large Meteorological Systems even at low stage of storm intensity (tropical depression). The anomalies showed periodicities between 2 and 3 hr with a strong decrease in the signal amplitude. The wave-like features were confirmed by the mother wavelet analysis of the normalized signal amplitude. These signal anomalies may result from traveling ionospheric disturbances generated by tropical storms and hurricanes associated gravity waves.

AB - In this paper we present ionospheric disturbances during the simultaneous presence of two to three Large Meteorological Systems, classified as hurricanes and tropical storms, in the Atlantic Ocean from August to November 2016. The ionospheric disturbances were detected by very low frequency (3–30 kHz) signals from two North American transmitters observed in Algiers (36.75°N, 03.47°E). The results show clear anomalies in the amplitude both at nighttime and at daytime. At nighttime, the anomalies were observed in association with all Large Meteorological Systems even at low stage of storm intensity (tropical depression). The anomalies showed periodicities between 2 and 3 hr with a strong decrease in the signal amplitude. The wave-like features were confirmed by the mother wavelet analysis of the normalized signal amplitude. These signal anomalies may result from traveling ionospheric disturbances generated by tropical storms and hurricanes associated gravity waves.

U2 - 10.1029/2018GL078988

DO - 10.1029/2018GL078988

M3 - Journal article

AN - SCOPUS:85054733278

SN - 0094-8276

VL - 45

SP - 10,185-10,192

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 19

ER -

VLF Signal Anomalies During Cyclone Activity in the Atlantic Ocean

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