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Multi-instrumental observations, including the ground-based ionosondes, the GNSS networks, and the CHAMP and ROCSAT-1 satellites, were utilized to investigate the occurrence and characteristics of midlatitude plasma irregularities. The midlatitude strong spread F (SSF) mainly occurred in the midnight\u2013morning sector as observed by ionosondes over Japan during this storm. SSF was related to plasma depletions, which is also recorded by GNSS network in the form of the enhancement of the rate of total electron content (TEC) change index (ROTI). The possible mechanism for the generation of SSF is that the enhanced eastward electric fields, associated with the prompt penetration electric fields and disturbance dynamo electric fields, cause the uplift and latitudinal extension of equatorial plasma bubbles (EPBs) to generate the observed midlatitude SSF further. Meanwhile, plasma density increased significantly under the influence of this storm. In addition, other common type of spread F, frequency spread F (FSF), was observed over Japan on the non-storm day and\/or at high latitude station WK545, which seems to be closely related to the coupling of medium-scale traveling ionospheric disturbances (MSTIDs) and sporadic E (Es) layer. The above results indicate that various types of midlatitude spread F can be produced by different physical mechanisms. It is found that SSF can significantly affect the performance of radio wave propagation compared with FSF. Our results show that space weather events have a significant influence on the day-to-day variability of the occurrence and characteristics of ionospheric F-region irregularities at midlatitudes.<\/jats:p>","DOI":"10.3390\/rs15041160","type":"journal-article","created":{"date-parts":[[2023,2,21]],"date-time":"2023-02-21T01:39:28Z","timestamp":1676943568000},"page":"1160","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Multi-Instrumental Observations of Midlatitude Plasma Irregularities over Eastern Asia during a Moderate Magnetic Storm on 16 July 2003"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8371-9760","authenticated-orcid":false,"given":"Hailun","family":"Ye","sequence":"first","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3717-6811","authenticated-orcid":false,"given":"Wen","family":"Yi","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Baozhu","family":"Zhou","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Jianfei","family":"Wu","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"CAS Center for Excellence in Comparative Planetology, Hefei 230026, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2758-1960","authenticated-orcid":false,"given":"Bingkun","family":"Yu","sequence":"additional","affiliation":[{"name":"Institute of Deep Space Sciences, Deep Space Exploration Laboratory, Hefei 230026, China"}]},{"given":"Penghao","family":"Tian","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Jianyuan","family":"Wang","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5045-2027","authenticated-orcid":false,"given":"Chi","family":"Long","sequence":"additional","affiliation":[{"name":"Key Laboratory of Geological Survey and Evaluation of Ministry of Education, China University of Geoscience, Wuhan 430074, China"}]},{"given":"Maolin","family":"Lu","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Xianghui","family":"Xue","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"CAS Center for Excellence in Comparative Planetology, Hefei 230026, China"},{"name":"Collaborative Innovation Center of Astronautical Science and Technology, Hefei 230026, China"},{"name":"Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China"}]},{"given":"Tingdi","family":"Chen","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"CAS Center for Excellence in Comparative Planetology, Hefei 230026, China"},{"name":"Collaborative Innovation Center of Astronautical Science and Technology, Hefei 230026, China"}]},{"given":"Xiangkang","family":"Dou","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, China"},{"name":"Collaborative Innovation Center of Astronautical Science and Technology, Hefei 230026, China"},{"name":"Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,20]]},"reference":[{"key":"ref_1","first-page":"A06305","article-title":"Distribution characteristics of topside ionospheric density irregularities: Equatorial versus midlatitude regions","volume":"111","author":"Su","year":"2006","journal-title":"J. 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