Eyjafjallajökull Volcanic Ash 2010 Effects on GPS Positioning Performance in the Adriatic Sea Region
Eyjafjallajökull Volcanic Ash 2010 Effects on GPS Positioning Performance in the Adriatic Sea Region
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DOI：
10.3390/atmos13010047
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发表时间：
2021-12
期刊：
影响因子：
2.9
通讯作者：
Maria Mehmood;S. Saleem;R. Filjar
中科院分区：
文献类型：
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作者：
Maria Mehmood;S. Saleem;R. Filjar
2010年的埃亚菲亚德拉火山灰危机暂时中断了欧洲的空中交通运营，因为39天的喷发导致广泛分散的灰烬进入低层大气。在本文中，我们评估了这一事件对电离层的影响，从而对GPS定位。我们收集并分析了2010年4月离火山最近的四个IGS站的数据。我们记录了垂直总电子含量（VTEC）的时间序列，分析了它们的动态，并将它们与商业级的，无辅助的，单频GPS接收机（模拟大众市场的GPS接收机的响应）的GPS定位误差进行了比较。在此期间的地磁指数显示，地磁扰动很小，特别是在火山事件。我们的研究结果表明，在火山灰事件期间电离层误差增加了15%，GPS位置分量误差的方差增加了。这项研究揭示了带电火山灰对亚得里亚海地区单频独立GPS定位精度的潜在影响，为今后研究类似事件奠定了基础。
The Eyjafjallajökull volcanic ash crisis in 2010 temporarily suspended European air traffic operations, as the 39-day eruption caused widely dispersed ashes to enter the lower atmosphere. In this paper, we assessed the effects of this event on the ionosphere layer and, consequently, on GPS positioning. We collected and analysed the data from four IGS stations, nearest to the volcano, for the month of April 2010. We recorded Vertical Total Electron Content (VTEC) time series, analysed their dynamics, and compared them with the GPS positioning errors of a commercial-grade, un-aided, single-frequency GPS receiver (simulating the response of a mass-market GPS receiver). The geomagnetic indices during the time period show little geomagnetic disturbance, especially during the volcanic event. Our results show an enhancement in ionosphere error by up to 15% during the volcanic ash event and an enhanced variance in GPS position components errors. This study reveals the potential impact of the charged volcanic ash on single-frequency, unaided GPS positioning accuracy in the Adriatic Sea region and establishes a foundation for studying similar events in future.