SYSTEMATIC VARIATIONS OF MACROSPICULE PROPERTIES OBSERVED BY SDO/AIA OVER HALF A DECADE

摘要: Macrospicules (MSs) are localized small-scale jet-like phenomena in the solar atmosphere, which have potential to transport a considerable amount of momentum and energy from lower atmospheric regions transition region low corona. A detailed statistical analysis their temporal behavior spatial properties is carried out this work. Using state-of-the-art resolution observations, yielded by Atmospheric Imaging Assembly Solar Dynamics Observatory, we constructed database covering 5.5 year long period, containing 301 macrospicules that occurred between 2010 June 2015 December, detected at 30.4 nm wavelength. Here, report long-term variation height, length, average speed, width MS coronal holes Quiet Sun areas both northern southern hemisphere Sun. This new helps refine our knowledge about physical MSs. Cross-correlation these shows relatively strong correlation, but not always dominant one. However, more indicates wave-like signature time. The periods oscillatory behaviors just under two years. Also, terms north/south hemispheres, asymmetry was found distribution properties, may be accounted for dynamo. latter feature then indicate rather intrinsic link global internal local