3D tomographic analysis of equatorial plasma bubble using GNSS-TEC data from Indonesian GNSS Network  

作　　者：Ihsan Naufal Muafiry Prayitno Abadi Teguh N.Pratama Dyah R.Martiningrum Sri Ekawati Yuandhika GWismaya Febrylian FChabibi Gatot HPramono 

机构地区：[1]Research Center for Climate and Atmosphere,Indonesian National Research and Innovation Agency(BRIN),Bandung,Indonesia [2]Indonesian Geospatial Information Agency(BIG),Jakarta,Indonesia [3]Dept.of Physics,Faculty of Science,Universiti Teknologi Malaysia,Johor Bahru,Malaysia [4]Dept.Earth Planet Sci.,Hokkaido University,Sapporo,Japan [5]School of Electrical Engineering,Telkom University,Bandung,Indonesia

出　　处：《Earth and Planetary Physics》2025年第1期127-136,共10页地球与行星物理（英文版）

基　　金：the National Institute of Information and Communication Technology International Exchange Program 2024−2025(No.2024−007)for their invaluable support in this research.3D tomography software is available at Prof.Kosuke Heki’s(Hokkaido University,Japan)personal homepage(https://www.ep.sci.hokudai.ac.jp/~heki/software.htm).;support from the 2024 Japan Student Services Organization Research Follow-up Fellowship for a 90-day research visit at the Institute for Space−Earth Environmental Research,Nagoya University,Japan.PA also acknowledges the support received from Telkom University under the“Skema Penelitian Terapan Periode I Tahun Anggaran 2024”,and the Memorandum of Understanding for Research Collaboration on Regional Ionospheric Observation(No:092/SAM3/TE-DEK/2021).

摘　　要：Equatorial Plasma Bubbles(EPBs)are ionospheric irregularities that take place near the magnetic equator.EPBs most commonly occur after sunset during the equinox months,although they can also be observed during other seasons.The phenomenon significantly disrupts radio wave signals essential to communication and navigation systems.The national network of Global Navigation Satellite System(GNSS)receivers in Indonesia(>30°longitudinal range)provides an opportunity for detailed EPB studies.To explore this,we conducted preliminary 3D tomography of total electron content(TEC)data captured by GNSS receivers following a geomagnetic storm on December 3,2023,when at least four EPB clusters occurred in the Southeast Asian sector.TEC and extracted TEC depletion with a 120-minute running average were then used as inputs for a 3D tomography program.Their 2D spatial distribution consistently captured the four EPB clusters over time.These tomography results were validated through a classical checkerboard test and comparisons with other ionospheric data sources,such as the Global Ionospheric Map(GIM)and International Reference Ionosphere(IRI)profile.Validation of the results demonstrates the capability of the Indonesian GNSS network to measure peak ionospheric density.These findings highlight the potential for future three-dimensional research of plasma bubbles in low-latitude regions using existing GNSS networks,with extensive longitudinal coverage.

关 键 词：EPB Indonesian GNSS Network 3D tomography 

分 类 号：P228.4[天文地球—大地测量学与测量工程]