Inceoglu Fadil, Loto'aniu Paul T M
Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, 80309, USA.
National Centers for Environmental Information, National Oceanic and Atmospheric Administration, Boulder, 80309, CO, USA.
Sci Rep. 2023 Nov 9;13(1):19460. doi: 10.1038/s41598-023-46902-6.
Through variations in its magnetic activity at different timescales, the Sun strongly influences the space weather conditions throughout the heliosphere. The most known solar activity variation is the Schwabe Cycle, also known as the Sunspot Cycle (SCs), period of which ranges from 9 to 13 years. The Sun also shows shorter quasi-periodic variations, such as the quasi-biennial oscillations (QBOs), superposed on the SCs. The QBOs are thought to be a global phenomena extending from the subsurface layers of the Sun to Earth and throughout the Heliosphere with a period generally between 1.3 and 1.6 years. In this study, we, for the first time, detected signals with periods ranging from 1.3 to 1.6 years in Earth's magnetosphere, which can be associated with the solar QBOs, using data from multiple GOES missions. The QBO-like signals detected in Earths Magnetopshere are thought to be propagated via the solar wind from the solar surface.
通过其在不同时间尺度上的磁活动变化，太阳强烈影响着整个日球层的空间天气状况。最著名的太阳活动变化是施瓦贝周期，也称为太阳黑子周期（SCs），其周期范围为9至13年。太阳还表现出较短的准周期变化，例如叠加在SCs上的准两年振荡（QBOs）。QBOs被认为是一种全球性现象，从太阳的次表层延伸到地球乃至整个日球层，周期通常在1.3至1.6年之间。在本研究中，我们首次利用多个GOES任务的数据，在地球磁层中检测到了周期范围为1.3至1.6年的信号，这些信号可能与太阳QBOs有关。在地球磁层中检测到的类似QBO的信号被认为是通过太阳风从太阳表面传播而来的。
