Effect of magnetic storms (substorms) on HF propagation: A review

Blagoveshchenskii, D. V.

doi:10.1134/s0016793213040038

“…Each geomagnetic storm is a unique phenomenon with different characteristics. Therefore, taking into account the complexity and comprehensiveness of ionospheric manifestations of geomagnetic storms, a multiinstrumental approach is more and more widely used to study these phenomena [Afraimovich et al, 2002;Crowley et al, 2006;Balan et al, 2011;Astafyeva et al, , 2017. The application of a large set of different instruments (ground-based and satellite, radiophysical, optical, etc.)…”

Section: Introductionmentioning

confidence: 99%

Ionospheric Disturbances Over Eastern Siberia During April 12–15, 2016 Geomagnetic Storms

Rubtsov

¹

,

Maletckii

²

,

Danilchuk

³

et al. 2020

Solar-Terrestrial Physics

6

0

View full text Add to dashboard Cite

We present the results of the complex study of ionospheric parameter variations during two geomagnetic storms, which occurred on April 12–15, 2016. The study is based on data from a set of radiophysical and optical instruments. Both the storms with no sudden commencement were generated by high-speed streams from a coronal hole. Despite the minor intensity of the storms (Dst ≥ –55 and –59 nT), we have revealed a distinct ionospheric response to these disturbances. A negative response of electron density and F2-layer critical frequency was observed during the main phase of both the storms. The amplitude of the negative response was higher for the second storm. The period of negative electron density deviations was accompanied by an increase in the peak height, as well as by the downward plasma drift in the evening and night hours, which is not typical of quiet conditions. We have also recorded sharp peaks in the AATR (Along Arc TEC Rate) index and in total electron content noise spikes on average 2–2.5 times. This indicates an intensification of small-scale ionospheric disturbances caused by disturbed geomagnetic conditions and high substorm activity.

show abstract

“…Каждая геомагнитная буря является уникальным явлением, которому могут быть свойственны различные характеристики. Поэтому, принимая во внимание всю сложность и комплексность ионосферных проявлений геомагнитных бурь, в настоящее время все более активно применяется мультиинструментальный подход к изучению данных явлений [Афраймович и др., 2002;Balan et al, 2011;Astafyeva et al, , 2017. Использование большого набора разнообразных инструментов (наземных и спутниковых, радиофизических, оптических и т.…”

Section: Introductionunclassified

Ionospheric disturbances over Eastern Siberia during April 12–15, 2016 geomagnetic storms

Rubtsov

¹

,

Maletckii

²

,

Danilchuk

³

et al. 2020

Solnechno-Zemnaya Fizika

1

0

View full text Add to dashboard Cite

We present the results of the complex study of ionospheric parameter variations during two geomagnetic storms, which occurred on April 12–15, 2016. The study is based on data from a set of radiophysical and optical instruments. Both the storms with no sudden commencement were generated by high-speed streams from a coronal hole. Despite the minor intensity of the storms (Dst ≥ –55 and –59 nT), we have revealed a distinct ionospheric response to these disturbances. A negative response of electron density and F2-layer critical frequency was observed during the main phase of both the storms. The amplitude of the negative response was higher for the second storm. The period of negative electron density deviations was accompanied by an increase in the peak height, as well as by the downward plasma drift in the evening and night hours, which is not typical of quiet conditions. We have also recorded sharp peaks in the AATR (Along Arc TEC Rate) index and in total electron content noise spikes on average 2–2.5 times. This indicates an intensification of small-scale ionospheric disturbances caused by disturbed geomagnetic conditions and high substorm activity.

show abstract

Substorm Manifestations at Radio Paths of Oblique Ionospheric Sounding in the Arctic

Blagoveshchensky

¹

,

Sergeeva

²

2020

Pure Appl. Geophys.

View full text Add to dashboard Cite

Effect of magnetic storms (substorms) on HF propagation: A review

Cited by 10 publications

References 20 publications

Ionospheric Disturbances Over Eastern Siberia During April 12–15, 2016 Geomagnetic Storms

Ionospheric Disturbances Over Eastern Siberia During April 12–15, 2016 Geomagnetic Storms

Ionospheric disturbances over Eastern Siberia during April 12–15, 2016 geomagnetic storms

Substorm Manifestations at Radio Paths of Oblique Ionospheric Sounding in the Arctic

Contact Info

Product

Resources

About