scholarly journals Estimation of interplanetary electric field conditions for historical geomagnetic storms

2015 ◽  
Vol 120 (9) ◽  
pp. 7307-7317 ◽  
Author(s):  
Sandeep Kumar ◽  
B. Veenadhari ◽  
S. Tulasi Ram ◽  
R. Selvakumaran ◽  
Shyamoli Mukherjee ◽  
...  
Keyword(s):  
Electric Field ◽  
Geomagnetic Storms ◽  
Field Conditions

Switching of KNbO3single crystals under steady electric field conditions

1983 ◽  
Vol 16 (6) ◽  
pp. 1115-1121 ◽  
Author(s):  
S G Ingle ◽  
M V Kokate
Keyword(s):  
Electric Field ◽  
Field Conditions

scholarly journals ANALISIS PENGARUH PENETRASI MEDAN LISTRIK LINTANG TINGGI KE LINTANG RENDAH TERHADAP IONOSFER SAAT BADAI GEOMAGNET (ANALYSIS OF THE ELECTRIC FIELD PENETRATION EFFECT FROM HIGH TO LOW LATITUDES ON THE IONOSPHERE DURING GEOMAGNETIC STORM)

2018 ◽  
Vol 14 (2) ◽  
pp. 97
Author(s):  
Anwar Santoso ◽  
Dadang Nurmali ◽  
Mira Juangsih ◽  
Iyus Edi Rusnadi ◽  
Sri Ekawati ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Current ◽  
High Latitude ◽  
Delay Time ◽  
Geomagnetic Storms ◽  
Equatorial Electrojet ◽  
Minimum Point ◽  
Low Latitude ◽  
Dst Index ◽  
Low Latitudes

The influence of geomagnetic storms on the ionosphere in the equatorial and low latitudes can be either rising or falling value of the value foF2 with the different response delay time. The difference in response is one of them allegedly influenced by the modification of Equatorial Electrojet (EEJ) generated by the penetration of high latitude electric field towards the low latitude electric field and the equator. Therefore, this paper analyzes the influence of the high latitude penetration of electric current to the low latitude electric current towards the ionosphere response to Indonesia's current geomagnetic storms using the data foF2 BPAA Sumedang (SMD; 6,910 S; 106,830E geographic coordinates or 16,550 S; 179,950 E magnetic coordinates) and data from the Biak geomagnetic field station (BIK; 1,080 S; 136,050 E geographic coordinates or  9,730 S; 207,390 E magnetic coordinates) in 2000-2001. The result showed that the injection of the electric field of the high latitudes to lower latitudes causing foF2 BPAA Sumedang to be disturbed. Onset of the foF2 disturbance in BPAA Sumedang started coincide with EEJ(HBIK-HDRW) and reached its minimum point with a time delay between 0 to 4 hours before and after Dst index reached the minimum point. For a delay time of 0 to 4 hours after the Dst index reached the minimum point, the results were in accordance with the research results from the prior research. However, for the time difference of between 0 to 4 hours before the Dst index reached the minimum point, the results differ from their results. AbstrakPengaruh badai geomagnet terhadap ionosfer di ekuator dan lintang rendah berupa naiknya nilai foF2 atau turunnya nilai foF2 dengan waktu tunda respon berbeda-beda. Perbedaan respon tersebut salah satunya diduga dipengaruhi oleh modifikasi Equatorial electrojet (EEJ) yang dihasilkan oleh penetrasi medan listrik lintang tinggi sampai daerah lintang rendah dan ekuator. Oleh karena itu, dalam makalah ini dilakukan analisis pengaruh penetrasi arus listrik lintang tinggi ke lintang rendah terhadap ionosfer saat badai geomagnet menggunakan data foF2 dari Balai Pengamatan Antariksa dan Atmosfer (BPAA) Sumedang (SMD; 6,910 LS; 106,830 BT koordinat geografis atau 16,550 LS; 179,950 BT koordinat magnet) dan data medan geomagnet dari stasiun Biak (BIK; 1,080 LS; 136,050 BT koordinat geografis atau 9,730 LS; 207,390 BT koordinat magnet) tahun 2000-2001. Hasilnya diperoleh bahwa penetrasi medan listrik dari lintang tinggi ke lintang lebih rendah Indonesia menyebabkan foF2 BPAA Sumedang terganggu. Onset gangguan foF2 BPAA Sumedang mulai terjadi bertepatan dengan EEJ(HBIK-HDRW) mencapai titik minimumnya dengan jeda waktu antara 0 sampai 4 jam sebelum dan sesudah indeks Dst mencapai minimum. Untuk beda waktu 0 sampai 4 jam sesudah indeks Dst mencapai minimum, hasilnya bersesuaian dengan hasil penelitian peneliti sebelumnya. Namun, untuk beda waktu 0 sampai 4 jam sebelum indeks Dst mencapai minimum, hasilnya merupakan temuan berbeda dari hasil mereka.

THz Generation in Laser Filament under Electric Field Conditions

2019 ◽  
Author(s):  
D. M. Lubenko ◽  
V. E. Prokopev ◽  
V. F. Losev ◽  
S. V. Alekseev ◽  
M. V. Ivanov
Keyword(s):  
Electric Field ◽  
Field Conditions ◽  
Thz Generation

Effect of streamer shape and dimensions on local electric field conditions

1988 ◽  
Vol 23 (4) ◽  
pp. 669-676 ◽  
Author(s):  
P. Girdino ◽  
P. Molfino ◽  
G. Molinari ◽  
A. Viviani ◽  
G.J. Fitzpatrick ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Conditions ◽  
Local Electric Field

scholarly journals Role of filament plasma remnants in ICMEs leading to geomagnetic storms

2013 ◽  
Vol 8 (S300) ◽  
pp. 493-494 ◽  
Author(s):  
Rahul Sharma ◽  
Nandita Srivastava ◽  
D. Chakrabarty
Keyword(s):  
Electric Field ◽  
Geomagnetic Storms ◽  
Interplanetary Coronal Mass Ejections ◽  
Plasma Dynamics ◽  
Terrestrial Magnetosphere ◽  
Auroral Substorms ◽  
Polarity Reversals ◽  
Ionospheric Electric Field ◽  
Filament Plasma

AbstractWe studied three interplanetary coronal mass ejections associated with solar eruptive filaments. Filament plasma remnants embedded in these structures were identified using plasma, magnetic and compositional signatures. These features when impacted the Earth's terrestrial magnetosphere - ionosphere system, resulted in geomagnetic storms. During the main phase of associated storms, along with high density plasma structures, polarity reversals in the Y-component (dawn-to-dusk) of the interplanetary electric field seem to trigger major auroral substorms with concomitant changes in the polar ionospheric electric field. Here, we examine the cases where plasma dynamics and magnetic structuring in the presence of the prompt penetration of the electric field into the equatorial ionosphere affected the space weather while highlighting the complex geomagnetic storm-substorm relationship.

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