点击次数：
影响因子：5.2
DOI码：10.1029/2022GL102583
发表刊物：Geophysical Research Letters
关键字：Electron cyclotron harmonic waves, Dayside outer magnetosphere
摘要：t The off-equatorial minimum-B-pocket (OEMBP) at high latitudes in the dayside outer magnetosphere is expected as another source region of the electrostatic electron cyclotron harmonic (ECH) waves, in addition to the magnetic equator. However, its crucial role in the excitation of the dayside ECH waves has never been directly investigated due to its spatiotemporal-varying and difficulty to be located. Based on the observations from Magnetospheric Multiscale satellites, we statistically analyze the properties of dayside ECH waves by organizing them according to the latitude distance from the OEMBP located by the spatiotemporal-varying geomagnetic field model. Such mapping confirms larger occurrence rates and electric field amplitudes of dayside ECH waves in the vicinity of the OEMBP, which gradually fall down nearby with the latitude distance increasing. Our results provide statistical evidence for the OEMBP as another source region of ECH waves besides the magnetic equator.
合写作者：Li L. Y.
第一作者：Yu J.
论文类型：期刊论文
一级学科：地球物理学
文献类型：期刊
卷号：50
期号：e2022GL102583
是否译文：否
发表时间：2023-07-01
收录刊物：SCI
发布期刊链接：https://doi.org/10.1029/2022GL102583