基于佳木斯雷达与北海道东雷达观测的F层不规则体回波发生率

王玮; 张佼佼; 王赤; 邓翔; 蓝爱兰; 阎敬业

doi:10.11728/cjss2023.04.2022-0028

基于佳木斯雷达与北海道东雷达观测的F层不规则体回波发生率

doi: 10.11728/cjss2023.04.2022-0028 cstr: 32142.14.cjss2023.04.2022-0028

王玮^{1, 2,},
张佼佼^{1, 2},
王赤^{1, 2},
邓翔¹,
蓝爱兰¹,
阎敬业¹

1.
中国科学院国家空间科学中心空间天气国家重点实验室　北京　100190
2.
中国科学院大学　北京　100049

基金项目: 国家自然科学基金项目（41731070，42174210），中国科学院前沿科学重点研究计划项目（QYZDJ-SSW-JSC028）和中国科学院空间科学战略性先导科技专项项目（XDA15052500）共同资助

详细信息

作者简介:

王玮：E-mail：wwang@spaceweather.ac.cn

中图分类号: P352
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出版历程
- 收稿日期: 2022-06-17
- 录用日期: 2023-06-25
- 修回日期: 2022-08-15
- 网络出版日期: 2023-06-25

Comparison of Characteristics of F-region Irregularities Scattering Occurrence Rate Based on the Observation of the Jiamusi Radar and Hokkaido East Radar

WANG Wei^{1, 2
,},
ZHANG Jiaojiao^{1, 2},
WANG Chi^{1, 2},
DENG Xiang¹,
LAN Ailan¹,
YAN Jingye¹

1.
State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190
2.
University of Chinese Academy of Sciences, Beijing 100049

摘要

摘要: 利用佳木斯和北海道东高频相干散射雷达的观测数据，对2018年3月至2019年11月期间两部雷达观测到的F层高度的不规则体回波信号发生率的分布特征进行了对比分析。比较了在地磁平静期（Kp < 3）和地磁扰动期（Kp > 3）的不规则体回波发生率变化特征，分析了回波发生率在昏侧与晨侧增强的现象和纬度变化特征。昏侧回波发生率增强现象在45°－64° MLAT范围内普遍存在，其中55°－64° MLAT的回波发生率在地磁扰动期明显增强。而晨侧回波发生率增强现象主要分布在45°－54° MLAT的地区，除了春秋分季外，地磁扰动的增强对其影响较弱。中纬日侧回波发生率受地磁活动影响较小。
- 中纬度电离层F层 /
- 电离层不规则体 /
- 地磁活动 /
- 回波发生率
Abstract: Distribution of the ionospheric irregularities scattering occurrence rate was investigated using data from March 2018 to November 2019, which were observed by the SuperDARN Jiamusi and Hokkaido East radars. The irregularities scattering occurrence rate have been statistically compared in the geomagnetic quiet period (Kp < 3) and geomagnetic disturbance period (Kp > 3), obtained the variation characteristics of the irregularities scattering occurrence rate depending on magnetic latitude and MLT, and analyzed the characteristics of the occurrence rate enhancement phenomenon in the dusk side and dawn side. The enhancement of the dusk side occurrence rate was widespread in the range of 45°－64° MLAT, and the occurrence rate in the subauroral region was significantly enhanced during the magnetic disturbed period. The enhancement of the dawn side occurrence rate is mainly distributed in areas below 55° MLAT, and the enhancement of the geomagnetic disturbance has a weak effect on it except in equinox. The dayside occurrence rate in middle magnetic latitude is less affected by geomagnetic disturbance.
- Mid-latitude ionospheric F region /
- Ionospheric irregularities /
- Geomagnetic activity /
- Scattering occurrence rate
注释:

1) 1https://superdarn.nssdc.ac.cn/

2) 2http://wdc.kugi.kyoto-u.ac.jp/wdc/Sec3.html

HTML全文

图 1 北半球SuperDARN雷达视野（粗黑线标出部分为JME雷达和HOK雷达视场）

Figure 1. Field of view of SuperDARN radars in the northern hemisphere (The areas marked by black solid lines are field of view of Radar JME and HOK)

下载: 全尺寸图片幻灯片

图 2 2018年3月至2019年11月不同季节JME雷达在地磁平静期和扰动期的回波发生率分布

Figure 2. Distribution of scattering occurrence rate of the JME radar in three seasons during geomagnetic quiet time and disturbed time from March 2018 to November 2019

下载: 全尺寸图片幻灯片

图 3 2018年3月至2019年11月不同季节HOK雷达在地磁平静期和扰动期的回波发生率分布

Figure 3. Distribution of scattering occurrence rate of the HOK radar in three seasons during geomagnetic quiet time and disturbed time from March 2018 to November 2019

下载: 全尺寸图片幻灯片

图 4 不同季节与不同地磁条件下JME 雷达观测到的不同纬度范围回波发生率随时间的变化

Figure 4. Distribution of scattering occurrence rate over time at different latitude ranges observed by the Jiamusi radar, and its variation in the geomagnetic quiet time, the geomagnetic disturb time and different seasons

下载: 全尺寸图片幻灯片

图 5 不同季节与不同地磁条件下HOK雷达观测到的不同纬度范围回波发生率随时间的变化

Figure 5. Distribution of scattering occurrence rate over time at different latitude ranges observed by the Hokkaido East radar, and its variation in the geomagnetic quiet time, the geomagnetic disturb time and different seasons

下载: 全尺寸图片幻灯片

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