Evaluation of the Annual Correlations between Different Solar-Ionospheric Indices During Solar Cycles 23 and 24
نویسندگان
چکیده
In this work, the annual behavior and cross-correlation between three different solar-ionospheric indices were evaluated: Smoothed Sunspot Number (SSN), Ionospheric T-Index (T-index), Solar Flux (F10.7 cm) index during solar cycles 23 24. The for tested of maximum minimum years two was studied. correlative conducts studied evaluated periods (1996-2008) (2008-2019) 23rd 24th cycles. correlation represented by linear regression equation. suggested mutual equation gave a good agreement with observed average values indices. statistical calculation results calculated datasets showed very all parameters. evaluation correlations that are mutually linearly correlated to each other can be predicted reciprocally depending on mathematical equations.
منابع مشابه
Solar Wind Plasma Parameter Variability Across Solar Cycles 23 and 24: From Turbulence to Extremes
Solar wind variability spans a wide range of amplitudes and timescales, from turbulent fluctuations to the 11 year solar cycle. We apply the data quantile-quantile (DQQ) method to NASA/Wind observations spanning solar cycles 23 and 24, to study how the uniqueness of each cycle maximum and minimummanifests in the changing statistical distribution of plasma parameters in fast and slow solar wind....
متن کاملEvolution of Coronal Holes and Implications for High-Speed Solar Wind During the Minimum Between Cycles 23 and 24
We analyze coronal holes present on the Sun during the extended minimum between Cycles 23 and 24, study their evolution, examine the consequences for the solar wind speed near the Earth, and compare it with the previous minimum in 1996. We identify coronal holes and determine their size and location using a combination of EUV observations from SOHO/EIT and STEREO/EUVI and magnetograms. We find ...
متن کاملSolar origins of solar wind properties during the cycle 23 solar minimum and rising phase of cycle 24
The solar wind was originally envisioned using a simple dipolar corona/polar coronal hole sources picture, but modern observations and models, together with the recent unusual solar cycle minimum, have demonstrated the limitations of this picture. The solar surface fields in both polar and low-to-mid-latitude active region zones routinely produce coronal magnetic fields and related solar wind s...
متن کاملPeriodicities in Solar Flare Occurrence: Analysis of Cycles 19–23
Mid-range periodicities in solar flare occurrence have been analyzed with new methods for cycles 19–23. During cycle 23, periodicities of 129-d and 33.5-d were in operation. Five episodes of high activity occurred periodically with the 129-d period. The 33.5-d periodicity mainly operated for energetic flares. Results for cycles 19–21 are generally in agreement with previous analyses. For cycle ...
متن کاملGeomagnetism during solar cycle 23: Characteristics
On the basis of more than 48 years of morphological analysis of yearly and monthly values of the sunspot number, the aa index, the solar wind speed and interplanetary magnetic field, we point out the particularities of geomagnetic activity during the period 1996-2009. We especially investigate the last cycle 23 and the long minimum which followed it. During this period, the lowest values of the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Iraqi journal of science
سال: 2022
ISSN: ['0067-2904', '2312-1637']
DOI: https://doi.org/10.24996/ijs.2022.63.10.40