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Generation of internal gravity vortices in the high-latitude ionosphere
Authors:VM Chmyrev  VM Sorokin
Institution:1. Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, 10B, Gruzinskaya Street, 123995 Moscow, Russian Federation;2. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, 142190 Troitsk, Moscow region, Russian Federation;1. Indian Institute of Geomagnetism, Navi Mumbai, India;2. Universidad Católica del Norte, Antofagasta, Chile;3. National Research Center for Integrated Natural Disaster Management, Santiago, Chile;4. GFZ Helmholtz Centre Potsdam, German Research Centre for Geosciences, Germany;1. Department Astronomy, Space Science and Geology, Chungnam National University, Daejeon, South Korea;2. Korea Polar Research Institute, Incheon, South Korea;1. Department of Astronomy, Space Science, and Geology, Chungnam National University, Daejeon 305764, Republic of Korea;2. Department of Physics, Sri Venkateswara University, Tirupati 517502, India;3. National Atmospheric Research Laboratory (NARL), Gadanki, Tirupati 517502, India;4. Space and Atmospheric Sciences Division, Physical Research Laboratory, Ahmedabad 380009, India;5. Department of Physics, Govt. Degree College(A), Anantapur 515001, India;6. Department of Physics, Sree Vidyanikethan Engineering College, Tirupati 517102, India;7. Department of Physics, JNTU College of Engineering, Pulivendula, India;8. Department of Physics, JNTU, Anantapur, India;1. Department of Natural History Sciences, Hokkaido University, N10, W8, Kita-ku, Sapporo 060 0810, Japan;2. Earthquake Research Institute, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, Japan;3. Geomatics Engineering Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia;4. Badan Informasi Geospasial, Jl. Raya Jakarta, Bogor KM. 46, Cibinong, Jawa Barat, Indonesia;1. School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China;2. Department of Earth and Enviormental Sciences, Bahria University, Islamabad, Pakistan;3. School of Mathematics and Information Science, Wenzhou University, Wenzhou 325035, China
Abstract:It is shown that ionosphere heating by DC electric field leads to instability of acoustic-gravity waves and to the formation of solitary internal gravity vortex structures. These dipole type vortices with characteristic transverse size of the order of several kilometers are propagated in the lower ionosphere with subsonic velocity. The threshold values of the electric field needed to suppress the wave damping caused by the interaction of induced current with the geomagnetic field and to provide the vortex generation are found. The considered physical mechanism is applicable to the generation of internal gravity vortices and related ionospheric disturbances when the ionosphere is influenced by the electric field of seismic origin exceeding the threshold value.
Keywords:
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