scholarly journals Interplanetary conditions leading to superintense geomagnetic storms (Dst ≤ −250 nT) during solar cycle 23

2008 ◽  
Vol 35 (6) ◽  
Author(s):  
E. Echer ◽  
W. D. Gonzalez ◽  
B. T. Tsurutani
Keyword(s):  
Solar Cycle ◽  
Geomagnetic Storms ◽  
Solar Cycle 23

The geoelectric structure of the Romanian underground and its contribution to the geoelectric hazard during the solar cycle 23

2020 ◽  
Author(s):  
Venera Dobrica ◽  
Dumitru Stanica ◽  
Crisan Demetrescu ◽  
Cristiana Stefan
Keyword(s):  
Solar Cycle ◽  
Geomagnetic Storms ◽  
Geomagnetic Disturbance ◽  
Geoelectric Field ◽  
Geomagnetically Induced Currents ◽  
Geomagnetic Variations ◽  
European Continent ◽  
Field Recordings ◽  
Weather Events ◽  
Solar Cycle 23

<p>A recent model of the Romanian lithosphere electric properties, based on magnetotelluric transects carried out in the past 50 years across main tectonic units, is used to assess the geoelectric hazard represented by geomagnetically induced currents (GICs) for certain space weather events. Based on the geomagnetic field recordings and on information regarding the underground electric conductivity, the surface geoelectric field associated to geomagnetic variations during several large geomagnetic storms of the solar cycle 23 (1986-1996) is determined using the plane wave approximation for the depth propagation of the geomagnetic disturbance. A comparison to the territory of the European continent is done as well.   </p>

scholarly journals Interplanetary origin of intense geomagnetic storms (Dst< −100 nT) during solar cycle 23

2007 ◽  
Vol 34 (6) ◽  
Author(s):  
W. D. Gonzalez ◽  
E. Echer ◽  
A. L. Clua-Gonzalez ◽  
B. T. Tsurutani
Keyword(s):  
Solar Cycle ◽  
Geomagnetic Storms ◽  
Solar Cycle 23

Statistical Study of Geomagnetic Storms during Year 1996-2007

2012 ◽  
Vol 433-440 ◽  
pp. 268-271
Author(s):  
Balveer S. Rathore ◽  
Subhash C. Kaushik ◽  
K.K. Parashar ◽  
Rammohan S. Bhadoria ◽  
Dinesh C. Gupta
Keyword(s):  
Magnetic Field ◽  
Solar Cycle ◽  
Geomagnetic Storm ◽  
Statistical Study ◽  
Geomagnetic Storms ◽  
Sunspot Cycle ◽  
Solar Wind Plasma ◽  
Strongly Correlated ◽  
Minimum Phase ◽  
Solar Cycle 23

A geomagnetic storm is a global disturbance in Earth’s magnetic field usually occurred due to abnormal conditions in the interplanetary magnetic field (IMF) and solar wind plasma emissions caused by various solar phenomenon. A study of 220 geomagnetic storms associated with disturbance storm time (Dst) decreases of more than -50 nT to -300 nT, observed during 1996-2007, the span of solar cycle 23. We have analyzed and studied them statistically. We find yearly occurrences of geomagnetic storm are strongly correlated with 11-year sunspot cycle, but no significant correlation between the maximum and minimum phase of solar cycle-23 have been found. It is also found that solar cycle-23 is remarkable for occurrence of Intense geomagnetic storm during its declining phase. The detailed results are discussed in this paper.

scholarly journals Midlatitude ionospheric changes to four great geomagnetic storms of solar cycle 23 in Southern and Northern Hemispheres

Space Weather ◽  
2016 ◽  
Vol 14 (12) ◽  
pp. 1155-1171 ◽  
Author(s):  
Tshimangadzo Merline Matamba ◽  
John Bosco Habarulema ◽  
Dalia Burešová
Keyword(s):  
Solar Cycle ◽  
Geomagnetic Storms ◽  
Solar Cycle 23

scholarly journals Interplanetary origins of moderate (−100 nT

2013 ◽  
Vol 118 (1) ◽  
pp. 385-392 ◽  
Author(s):  
E. Echer ◽  
B. T. Tsurutani ◽  
W. D. Gonzalez
Keyword(s):  
Solar Cycle ◽  
Geomagnetic Storms ◽  
Solar Cycle 23

scholarly journals Dependence of Intense Geomagnetic Storms on the Interplanetary Field / Plasma Parameters during Solar Cycle 23 & 24

IARJSET ◽  
2017 ◽  
Vol 4 (7) ◽  
pp. 5-12
Author(s):  
Seema Pande ◽  
Mahesh Chandra Mathpal ◽  
Bimal Pande
Keyword(s):  
Solar Cycle ◽  
Geomagnetic Storms ◽  
Plasma Parameters ◽  
Solar Cycle 23
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