The Occurrence Climatology of Equatorial Plasma Bubbles: A Review
The Occurrence Climatology of Equatorial Plasma Bubbles: A Review
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DOI：
10.5140/jass.2022.39.2.23
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发表时间：
2022-06
影响因子：
0.5
通讯作者：
H. Kil
中科院分区：
文献类型：
--
作者：
H. Kil
赤道电离层夜间电子密度的不规则性可以用等离子体气泡来理解，等离子体气泡是由低密度等离子体从F区底部传输到顶部产生的。赤道等离子体气泡（EPBs）已经通过地面和太空的各种技术被探测到。从长期观测中确定的EPB的显著特征之一是EPB活动的系统季节性和纵向变化。人们提出了几种假说来解释EPB的系统性行为，现在我们对决定这种行为的关键因素有了很好的了解。然而，我们对EPB气候学的理解仍然存在差距，主要是因为我们还没有能力同时和全球地观察种子扰动及其增长。本文综述了从观测中发现的EPBs的发生气候学以及目前对其驱动机制的认识。
Electron density irregularities in the equatorial ionosphere at night are understood in terms of plasma bubbles, which are produced by the transport of low-density plasma from the bottomside of the F region to the topside. Equatorial plasma bubbles (EPBs) have been detected by various techniques on the ground and from space. One of the distinguishing characteristics of EPBs identified from long-term observations is the systematic seasonal and longitudinal variation of the EPB activity. Several hypotheses have been developed to explain the systematic EPB behavior, and now we have good knowledge about the key factors that determine the behavior. However, gaps in our understanding of the EPB climatology still remain primarily because we do not yet have the capability to observe seed perturbations and their growth simultaneously and globally. This paper reviews the occurrence climatology of EPBs identified from observations and the current understanding of its driving mechanisms.