One-to-one relationship between low latitude whistlers and conjugate source lightning discharges and their propagation characteristics |
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| Authors: | Prateek R. Srivastava Sneha A. Gokani Ajeet K. Maurya Rajesh Singh Sushil Kumar B. Veenadhari R. Selvakumaran Abhay K. Singh Devendraa Siingh Janos Lichtenberger |
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| Affiliation: | 1. Faculty of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India;2. Dr. K.S. Krishnan Geomagnetic Research Laboratory, Leelapur Road, Near Chamanganj (Jhunsi), Post-Hetapur, Hanumanganj, Allahabad 221505, Uttar Pradesh, India;3. School of Engineering and Physics, Faculty of Science, Technology and Environment, The University of South Pacific, Private Mail Bag, Suva, Fiji;4. Indian Institute of Geomagnetism, Kalamboli Highway, New Panvel, Navi Mumbai 410218, Maharashtra, India;5. Atmospheric Research Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India;6. Indian Institute of Tropical Meteorology, Pashan, Pune 411 008, India;g Space Research Group, Eötvös University, Budapest Pf 32 H-1518, Hungary |
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| Abstract: | ![]()
One-to-one relation with its causative lightning discharges and propagation features of night-time whistlers recorded at low-latitude station, Allahabad (geomag. lat. 16.05°N, L = 1.08), India, from continuous observations made during 1–7 April, 2011 have been studied. The whistler observations were made using the Automatic Whistler Detector (AWD) system and AWESOME VLF receiver. The causative lightning strikes of whistlers were checked in data provided by World-Wide Lightning Location Network (WWLLN). A total of 32 whistlers were observed out of which 23 were correlated with their causative lightnings in and around the conjugate location (geom. lat. 9.87°S) of Allahabad. A multi-flash whistler is also observed on 1 April with dispersions 15.3, 17.5 and 13.6 s1/2. About 70% (23 out of 32) whistlers were correlated with the WWLLN detected causative lightnings in the conjugate region which supports the ducted mode of propagation at low latitude. The multi-flash and short whistlers also propagated most likely in the ducted mode to this station. |
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| Keywords: | Lightning discharge Low latitude whistlers Radio atmospherics Tweeks |
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