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- W4323304813 abstract "2022年1月15日汤加火山喷发释放的巨大能量, 对环太平洋电离层产生了显著影响. 基于火山近场(<1000 km)、区域(1000-5000 km)和远场(5000-12000 km)全球定位系统(Global Positioning System, GPS)观测数据, 本文提取并分析了火山喷发后电离层总电子含量(Total Electron Content, TEC)扰动特征. 结果表明, 火山喷发后8-15分钟内近场电离层扰动主要源于爆炸产生的冲击声波(~1000 m/s), 区域和远场上空远距离传播的低频扰动则与兰姆波有关(~330 m/s). 各地区扰动幅值与背景TEC值总体呈正相关关系, 并且随着扰动波行进距离增大, 相对振幅比率逐渐减小. 本文也对比了各地区参考日和事件日电离层活动水平, 并通过射线追踪反演得到了火山喷发时刻与位置, 与美国地质调查局结果接近, 进一步确认了区域和远场电离层响应均与汤加火山相关. 此外, 1月15日~06:20 UTC在新西兰上空观测到一组略延迟于初始海啸到时的频率突变扰动, 该扰动与DART浮标观测记录相符, 暗示气象海啸的产生." @default.
- W4323304813 created "2023-03-07" @default.
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- W4323304813 date "2023-06-05" @default.
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- W4323304813 title "基于<bold>GPS</bold>观测数据的<bold>2022</bold>年<bold>1</bold>月<bold>15</bold>日汤加火山电离层扰动特征分析" @default.
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- W4323304813 doi "https://doi.org/10.1360/sste-2022-0221" @default.
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