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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Statistical study of the GNSS phase scintillation associated with two types of auroral blobs
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Statistical study of the GNSS phase scintillation associated with two types of auroral blobs

机译：统计研究GNSS阶段闪烁与两种类型的极光blob

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摘要

This study surveys space weather effects on GNSS (Global Navigation Satellite System) signals in the nighttime auroral and polar cap ionosphere using scintillation receivers, all-sky imagers, and the European Incoherent Scatter Svalbard radar. We differentiate between two types of auroral blobs: blob type 1 (BT 1) which is formed when islands of high-density F region plasma (polar cap patches) enter the nightside auroral oval, and blob type 2 (BT 2) which are generated locally in the auroral oval by intense particle precipitation. For BT 1 blobs we have studied 41.4 h of data between November 2010 and February 2014. We find that BT 1 blobs have significantly higher scintillation levels than their corresponding polar cap patch; however, there is no clear relationship between the scintillation levels of the preexisting polar cap patch and the resulting BT 1 blob. For BT 2 blobs we find that they are associated with much weaker scintillations than BT 1 blobs, based on 20 h of data. Compared to patches and BT 2 blobs, the significantly higher scintillation level for BT 1 blobs implies that auroral dynamics plays an important role in structuring of BT 1 blobs.
机译：本研究调查对GNSS空间天气的影响(全球导航卫星系统)信号夜间极光和极冠电离层使用闪烁接收器,全天影像,和欧洲非相干散射斯瓦尔巴特群岛雷达。极光斑点:blob类型1 (BT)形成当岛屿F高密度区域的等离子体(极冠补丁)进入阴面极光椭圆形,blob类型2 (BT 2)生成的在激烈的极光椭圆粒子降水。41.4 h 2010年11月和2月之间的数据2014. 闪烁的水平比他们的高相应的极冠补丁;没有明确的闪烁之间的关系既存的极冠补丁和水平导致英国电信1团。它们与弱得多比BT 1 blob闪烁,基于20 h数据。明显高于闪烁BT 1水平blob意味着极光动力学中起着重要的作用在构建BT 1 blob。

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