Study of the travelling interplanetary shocks, their earth crossings and resulting geomagnetic disturbances

Badruddin,; Kumar, Anand; Derouich, M.

doi:10.1007/s10509-019-3560-x

Cited by 5 publications

(5 citation statements)

References 49 publications

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“…The phenomenon associated with the existence and variability of the localized magnetic field is called solar activity and consists of phenomena such as sunspots or prominences. Violent phenomena such as solar flares and coronal mass ejections (CMEs) may potentially have a dramatic impact on the Earth's environment; see, for example, a review by Gopalswamy () or recent studies by Krauss et al (), Goswami (), or Badruddin et al ().…”

Section: Solar Activitymentioning

confidence: 99%

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Statistical Analysis of the Correlation Between Anomalies in the Czech Electric Power Grid and Geomagnetic Activity

Výbošťoková

Švanda

2019

Space Weather

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Eruptive events on the Sun have an impact on the immediate surroundings of the Earth.Through induction of electric currents, they also affect Earth-bound structures such as the electric power transmission networks. Inspired by recent studies we investigate the correlation between the disturbances recorded in 12 years in the maintenance logs of the Czech electric power distributors with the geomagnetic activity represented by the K index. We find that in case of the data sets recording the disturbances on power lines at the high and very high voltage levels and disturbances on electrical substations, there is a statistically significant increase of anomaly rates in the periods of tens of days around maxima of geomagnetic activity compared to the adjacent minima of activity. There are hints that the disturbances are more pronounced shortly after the maxima than shortly before the maxima of activity. Our results provide indirect evidence that the geomagnetically induced currents may affect the occurrence rate of anomalies registered on power-grid equipment even in the midlatitude country in the middle of Europe. A follow-up study that includes the modeling of geomagnetically induced currents is needed to confirm our findings.

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Section: Solar Activitymentioning

confidence: 99%

“…Violent phenomena such as solar flares and coronal mass ejections (CMEs) may potentially have a dramatic impact on the Earth's environment, see e.g. a review by Gopalswamy (2006) or recent studies by Krauss et al (2015), Goswami (2018), or Badruddin et al (2019).…”

Section: Solar Activitymentioning

confidence: 99%

Statistical Analysis of the Correlation Between Anomalies in the Czech Electric Power Grid and Geomagnetic Activity

Výbošťoková

Švanda

2019

Space Weather

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“…The phenomenon associated with the existence and variability of the localized magnetic fi eld is called solar activity and consists of phenomena such as sunspots or prominences. Violent phenomena such as solar fl ares and coronal mass ejections (CMEs) may potentially have a dramatic impact on the Earth's environment; see, for example, a review by Gopalswamy ( 2006 ) or recent studies by Krauss et al ( 2015 ), Goswami ( 2018 ), or Badruddin et al ( 2019 ).…”

Section: Solar Activitymentioning

confidence: 99%

“…To complete the picture, the study performed in a neighboring country must be noted. Bailey et al (2017) modeled and measured the GICs in the Austrian electric power grid. They demonstrated that the Austrian electric power transmission network is susceptible to large GICs in the range of tens of amperes, particularly from strong geomagnetic variations in the east-west direction.…”

Section: Geomagnetic Activity and Its Effectsmentioning

confidence: 99%

Space Weather Quarterly Volume 16, Issue 4, 2019

2019

Space Weather Quarterly

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“…Numerical simulations and observational data have shown that the geomagnetic activity following IP shock impacts depends closely on the shock normal direction (see the comprehensive review by Oliveira & Samsonov, ). Nearly frontal shock impacts are associated with quasi‐symmetric magnetosphere response, whereas highly inclined shock impacts are associated with highly asymmetric magnetosphere responses with respect to timing and intensity (Badruddin et al, ; Guo et al, ; Oliveira & Raeder, , ; Oliveira & Samsonov, ; Oliveira et al, ; Rudd et al, ; Samsonov, ; Samsonov et al, ; Selvakumaran et al, ; Shi et al, ; Takeuchi et al, ; Wang et al, ). In addition, the inclination angles of solar wind phase fronts have recently been shown to control the subsequent geomagnetic activity even during quiet (non‐shocked) solar wind conditions (Cameron et al, ).…”

Section: Introductionmentioning

confidence: 99%

Interhemispheric Asymmetries in the Ground Magnetic Response to Interplanetary Shocks: The Role of Shock Impact Angle

Hartinger

Oliveira

et al. 2020

Space Weather

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Interplanetary (IP) shocks drive magnetosphere‐ionosphere (MI) current systems that in turn are associated with ground magnetic perturbations. Recent work has shown that IP shock impact angle plays a significant role in controlling the subsequent geomagnetic activity and magnetic perturbations; for example, highly inclined shocks drive asymmetric MI responses due to interhemispherical asymmetric magnetospheric compressions, while almost head‐on shocks drive more symmetric MI responses. However, there are few observations confirming that inclined shocks drive such asymmetries in the high‐latitude ground magnetic response. We use data from a chain of Antarctic magnetometers, combined with magnetically conjugate stations on the west coast of Greenland, to test these model predictions (Oliveira & Raeder, 2015, https://doi.org/10.1002/2015JA021147; Oliveira, 2017, https://doi.org/10.1007/s13538-016-0472-x). We calculate the time derivative of the magnetic field ( ∂Bfalse/∂t) in each hemisphere separately. Next, we examine the ratio of Northern to Southern Hemisphere ∂Bfalse/∂t intensities and the time differences between the maximum ∂Bfalse/∂t immediately following the impact of IP shocks. We order these results according to shock impact angles obtained from a recently published database with over 500 events and discuss how shock impact angles affect north‐south hemisphere asymmetries in the ground magnetic response. We find that the hemisphere the shock strikes first usually has (1) the first response in ∂Bfalse/∂t and (2) the most intense response in ∂Bfalse/∂t. Additionally, we show that highly inclined shocks can generate high‐latitude ground magnetic responses that differ significantly from predictions based on models that assume symmetric driving conditions.

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Study of the travelling interplanetary shocks, their earth crossings and resulting geomagnetic disturbances

Cited by 5 publications

References 49 publications

Statistical Analysis of the Correlation Between Anomalies in the Czech Electric Power Grid and Geomagnetic Activity

Statistical Analysis of the Correlation Between Anomalies in the Czech Electric Power Grid and Geomagnetic Activity

Space Weather Quarterly Volume 16, Issue 4, 2019

Interhemispheric Asymmetries in the Ground Magnetic Response to Interplanetary Shocks: The Role of Shock Impact Angle

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