The Low-Latitude Plasma Irregularities after Sunrise from Multiple Observations in Both Hemispheres during the Recovery Phase of a Storm
The Low-Latitude Plasma Irregularities after Sunrise from Multiple Observations in Both Hemispheres during the Recovery Phase of a Storm
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风暴恢复阶段日出后两半球多次观测的低纬度等离子体不规则性
DOI：
10.3390/rs12182897
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发表时间：
2020-09
期刊：
影响因子：
5
通讯作者：
Changshanshan
中科院分区：
文献类型：
--
作者：
Luoweihua;Xiongchao;Xujisheng;Changshanshan
白天低纬电离层等离子体密度扰动主要发生在夜间，称为等离子体不规则性，是一种异常现象。根据多个低地球轨道（LEO）卫星的观测，例如，国防气象卫星计划F13和F15，中华民国的第一颗卫星中华卫星一号（ROCSAT-1）、重力恢复与气候实验卫星（GRACE）、小型卫星有效载荷卫星（CHAMP），以及地面全球定位系统（GPS）接收机，本文报道了2003年8月18日在太平洋赤道地区观测到的一个特殊的低纬等离子体不规则事件，该事件发生在一次中等强度的磁暴之后的日出之后。来自两半球三个地基GPS站的观测显示，在20：00至21：00 UT（当地日出前后）期间，总电子含量（TEC）扰动显着，与附近飞行的LEO卫星记录的原位等离子体密度不规则性非常一致。这些LEO卫星观测到的等离子体不规则性在不同高度显示出相当不同的耗尽强度。我们认为，等离子体的不规则性是新鲜产生的日出小时附近由于扰动的发电机电场（DDEF），演变成后日出和早晨部门，但不是残留的等离子体的不规则性产生在前一个夜晚。
The daytime plasma density disturbances in the low-latitude ionosphere, referred to as plasma irregularities, mainly occur during the nighttime and are an unusual phenomenon. Based on the observations from multiple low Earth orbiting (LEO) satellites, e.g., the Defense Meteorological Satellite Program (DMSP) F13 and F15, the first Satellite of the Republic of China (ROCSAT-1), the Gravity Recovery and the Climate Experiment (GRACE), and Challenging Mini-satellite Payload (CHAMP) satellites, as well as the ground-based Global Positioning System (GPS) receivers, we report a special event of low-latitude plasma irregularities that were observed after sunrise in the Pacific longitudes on 18 August, 2003, following a moderate geomagnetic storm. Observations from three ground-based GPS stations in both hemispheres showed remarkable total electron content (TEC) disturbances during 20:00 to 21:00 UT (around local sunrise), agreeing well with the in situ plasma density irregularities recorded by the nearby flying LEO satellites. The plasma irregularities observed by these LEO satellites showed quite different depletion intensities at different altitudes. We suggest that the plasma irregularities were freshly generated near sunrise hours due to the disturbance of the dynamo electric field (DDEF), evolving into the post-sunrise and morning sector, but were not the remnant of the plasma irregularities generated during the previous nighttime.
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DOI：
10.5636/jgg.38.111
发表时间：
1986
期刊：
Journal of geomagnetism and geoelectricity
影响因子：
--
作者：
H. Oya;Tadatoshi Takahashi;S. Watanabe
通讯作者：
H. Oya;Tadatoshi Takahashi;S. Watanabe
影响因子：
1.6
作者：
L. McNamara;D. Cooke;C. Valladares;B. Reinisch
通讯作者：
L. McNamara;D. Cooke;C. Valladares;B. Reinisch
DOI：
10.1002/2015ja021447
发表时间：
2015-10
期刊：
Journal of Geophysical Research: Space Physics
影响因子：
--
作者：
I. Zakharenkova;E. Astafyeva;I. Cherniak
通讯作者：
I. Zakharenkova;E. Astafyeva;I. Cherniak
影响因子：
5.2
作者：
S. Fukao;Y. Ozawa;M. Yamamoto;R. Tsunoda
通讯作者：
S. Fukao;Y. Ozawa;M. Yamamoto;R. Tsunoda
DOI：
10.5636/jgg.38.125
发表时间：
1986
期刊：
Journal of geomagnetism and geoelectricity
影响因子：
--
作者：
S. Watanabe;H. Oya
通讯作者：
S. Watanabe;H. Oya