A survey of geomagnetic and plasma time lags in the solar-wind-driven magnetosphere of earth
A survey of geomagnetic and plasma time lags in the solar-wind-driven magnetosphere of earth
复制标题
太阳风驱动的地球磁层中地磁和等离子体时滞的调查
DOI:
10.1016/j.jastp.2020.105376
复制
发表时间:
2020
影响因子:
1.9
通讯作者:
Borovsky, Joseph E.
中科院分区:
文献类型:
--
作者:
Borovsky, Joseph E.
Sixteen variables describing the state of the magnetosphere are examined in the years 1991–2007; the sixteen variables include nine geomagnetic indices plus seven measures of electron and ion precipitation into the atmosphere, the rate of substorm occurrence, the pressure and number density of the ion plasma sheet, the flux of substorm-injected electrons, and the radiation-belt electron flux. Eight other variables are used to represent the properties of the solar wind at Earth. To estimate the time lags between magnetospheric and solar-wind variables bivariate (two-variable) linear correlations, multivariate linear correlations, and vector-vector correlations are utilized. Using bivariate correlation the lag time of each magnetospheric variable with respect to each solar-wind variable is varied to obtain the maximum correlation coefficient. Using multivariate linear correlations, the time series of each magnetospheric variable is correlated with a linear combination of the eight time series of the eight solar-wind variables, with eight independent lead times on the eight solar-wind variables optimized to produce the largest multivariate correlation coefficient. The resulting time lag between each magnetospheric variable and each solar-wind variable is then catalogued. Additionally, the solar-wind variables that most-strongly affect each of the 16 magnetospheric variables are noted. A similar process of optimizing lag times on magnetospheric variables is performed during vector-vector correlations between a 9-dimensional magnetospheric state vector and an 8-dimensional solar-wind state vector.
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DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
M. Füllekrug;A. Fraser;K. Schlegel
通讯作者:
K. Schlegel
影响因子:
1.9
作者:
Johnson, Jay R.;Wing, Simon;Camporeale, Enrico
通讯作者:
Camporeale, Enrico
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
D. Weimer;J. King
通讯作者:
J. King
影响因子:
2
作者:
ROBINS, J
通讯作者:
ROBINS, J
DOI:
--
发表时间:
2007
期刊:
Planet. Space Science 55
影响因子:
--
作者:
Kozyreva;O.V. et al.
通讯作者:
O.V. et al.