空间科学学报2026，Vol.46Issue(2)：290-299,10.DOI:10.11728/cjss2026.02.2025-0069
大尺度行进式热层与电离层扰动同步观测的事例对比
Case Comparative of Simultaneous Observations of Large-scale Traveling Thermospheric and Ionospheric Disturbances
摘要
Abstract
To compare the propagation characteristics of Large-Scale Traveling Atmospheric Distur-bances(LSTAD)and Large-Scale Traveling Ionospheric Disturbances(LSTID)that propagate in tan-dem in the thermosphere-ionosphere,this paper takes advantage of the CHAMP satellite's ability to si-multaneously observe atmospheric mass density and electron density across latitudes,studying a pair of LSTAD and LSTID events that propagated in tandem over long distances on 19 March 2002.Around 04:00-06:00 UT on 19 March,with a sudden and significant increase in the AE index,the CHAMP satellite observed the LSTAD and LSTID propagating in tandem in the Northern Hemisphere.Over the next approximately 6 h after 04:00 UT,these disturbances in atmospheric mass density and electron den-sity propagated southward,crossed the equator,and entered the Southern Hemisphere,eventually dissi-pating there.On the other hand,the ground-based GNSS chain observations also confirmed the exis-tence of the LSTID observed by the satellite.Through comparative analysis,it was found that due to the highly controlled movement of electrons by the Lorentz force while neutral particles are not con-strained by it,the horizontal propagation speeds of LSTAD and LSTID along the meridian direction show significant differences.Therefore,at the same time and position on the same orbit,their phases are not the same and may even differ significantly.关键词
大尺度行进式大气层扰动/大尺度行进式电离层扰动/传播特征/同步观测Key words
Large-Scale Traveling Atmospheric Disturbances(LSTAD)/Large-Scale Traveling Ionospheric Disturbances(LSTID)/Propagation characteristics/Simultaneous observations分类
天文与地球科学引用本文复制引用
潘建宏,蔡红涛,闫旭,胡坤,杨璐冰,青海银,张世炜..大尺度行进式热层与电离层扰动同步观测的事例对比[J].空间科学学报,2026,46(2):290-299,10.基金项目
四川省科技计划项目资助(2025ZNSFSC0315) （2025ZNSFSC0315）
