Sporadic E responds to the 2022 Tonga volcano eruptions recorded by the Meridian Project  

作　　者：YangYi Sun Tao Yu Jin Wang Chi Long 

机构地区：[1]School of Geophysics and Geomatics,China University of Geosciences(Wuhan),Wuhan 430047,China [2]School of Physics and Electronic Science,Guizhou Normal University,Guizhou 550001,China

出　　处：《Earth and Planetary Physics》2025年第1期20-28,共9页地球与行星物理（英文版）

基　　金：the Funds of the National Natural Science Foundation of China(NSFC),grant numbers 42174211,42230207,and U2039205.

摘　　要：In this study,ionosonde observations over Fuke(19.5°N,109.1°E),Wuhan(30.5°N,114.4°E),and Mohe(53.5°N,122.3°E)were analyzed to demonstrate the responses of the sporadic E()to the severe atmospheric disturbances caused by the Tonga volcanic eruptions on January 15,2022.The most prominent signature was the disappearance of the layer after~10:00 UT over Wuhan and Fuke,which was attributed to the vertical drift caused by the eruptions.The occurred intermittently after 13:00 UT following the arrival of the tropospheric Lamb wave.To examine the causal mechanism for the intermittence,we also included data of horizontal winds in the mesosphere and lower thermosphere region recorded by the meteor radars at Wuhan and Mohe in this study.The wind disturbances with periods of~20 hours contributed to the formation of the layer in the nighttime on January 15.

关 键 词：sporadic E Tonga eruptions neutral wind disturbances 

分 类 号：P352.7[天文地球—空间物理学] P317[天文地球—地球物理学]