[PDF] Top 20 Long-term trends of fo E and geomagnetic activity variations
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Long-term trends of fo E and geomagnetic activity variations
... of geomagnetic activity effects from the foE long-term ...F2-layer trends, a time shift n (in years) of Ap 132 with respect to δfoE 132 variations is required to obtain the least ... See full document
10
An interpretation of the fo F2 and hm F2 long-term trends in the framework of the geomagnetic control concept
... hmF2 long-term trends are interpreted in the scope of the geomagnetic control concept based on the contemporary F2-layer storm ...parameter trends strongly depend on the ... See full document
16
Ionospheric F1 layer long-term trends and the geomagnetic control concept
... the trends analysis in the F2-layer was described by Mikhailov et ...the E-region – by Mikhailov and de la Morena ...of geomagnetic activity in ionospheric trends, was used with some ... See full document
11
Ionospheric long-term trends: can the geomagnetic control and the greenhouse hypotheses be reconciled?
... parameter long-term trends are considered from the geomagnetic control concept and the greenhouse hypothesis points of ...that long-term geomagnetic activity ... See full document
10
Ionospheric long-term trends: can the geomagnetic control and the greenhouse hypotheses be reconciled?
... parameter long-term trends are considered from the geomagnetic control concept and the greenhouse hypothesis points of ...that long-term geomagnetic activity ... See full document
9
Long-term trends of fo F2 independent of geomagnetic activity
... relative trends (without getting rid of the geo- magnetic activity effects) of the same type as considered by Danilov and Mikhailov (1999, 2001) and Mikhailov and Marin (2000, 2001), calculated using the ... See full document
10
Geomagnetic control of the <i>fo</i>F2 long-term trends
... decreasing geomagnetic activity are revealed for the ®rst ...diurnal variations of the foF2 trend magnitude are ...foF2 trends in the post-midnight-early-morning LT sector and strong neg- ... See full document
14
Concerning long-term geomagnetic variations and space climatology
... During geomagnetic polarity transitions the sur- face magnetic field of the Earth decays to about 25% and less of its present ...field variations scale in the same man- ner. Furthermore, the ... See full document
9
Long term trends in geomagnetic daily variation
... magnetic activity. On disturbed days variations in the solar wind has a consider- able effect on the coupled magnetosphere-ionosphere sys- tem and as a result all currents are energized, especially those at ... See full document
5
The correlation between solar and geomagnetic activity – Part 2: Long-term trends
... (aa) activity for a 528-month (44-year) running time window are shown to vary in a declining, declining and rising secular trend, respectively, before ...these trends changed since 1958 with a rising ... See full document
8
The method of determination of the long-term trends in the F2 region independent of geomagnetic activity
... nongeomagnetic trends at various stations is a matter of another publication, it is worth giving an example of the application of the approach proposed to another ... See full document
11
Long-term trends in fo F2: their estimating and origin
... and geomagnetic activity (if we omit data quality ...by long-term trend for the dataset analyzed in this ...and geomagnetic activities is needed. For solar activity we use ... See full document
6
ANGEO - Geomagnetic control of the foF2 long-term trends
... decreasing geomagnetic activity are revealed for the ®rst ...diurnal variations of the foF2 trend magnitude are ...foF2 trends in the post-midnight-early-morning LT sector and strong neg- ... See full document
13
On long term trends in European geomagnetic observatory biases
... European geomagnetic observatory biases over 42 years, considered as contributions of the crustal field, and generally assumed to be constant in ...clear long-term trends remain after ... See full document
11
A revised approach to the fo F2 long-term trends analysis
... of geomagnetic activity effects from the foF2 ...the geomagnetic ac- tivity effects, but only contaminates (due to low correlation with monthly foF2) the analyzed material without chang- ing, in ... See full document
13
On the long term change in the geomagnetic activity during the 20th century
... solar activity. The long term evolution of the yearly number of magnetic quiet days, therefore, monitors the long term evolution of the solar ...the long term variation of ... See full document
7
Long-term trends in the relation between daytime and nighttime values of fo F2
... seasonal variations, the highest negative values being observed at the equinox pe- riods of the ...on geomagnetic activity: the magnitude of R(foF2) is the high- est for the choice of only ... See full document
8
Long-term variations in solar wind parameters, magnetopause location, and geomagnetic activity over the last five solar cycles
... Pearson correlation coefficients for annual sunspot numbers, solar wind parameters, magnetopause distance calculated by L10 model, and magnetospheric indices for a zero time lag between [r] ... See full document
21
On the semiannual and annual variations of geomagnetic activity and components
... a long se- ries of magnetic observatories daily values, as well as in the aa-activity index series, are ...common variations on decadal time scales; relative phases and amplitude ratios between the ... See full document
6
Long term evolution of geomagnetic activity under the influence of 11 year cyclic variations in solar activity during solar cycle 23 and 24
... and geomagnetic indices showing their periodicity ...of long term solar variations on geomagnetic activity during the solar cycle 23 and stating phase of cycle ...magnetic ... See full document
6
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