Field - aligned current ; substorm ; substorm current wedge 場向電流亞暴亞暴電流楔
The characteristics of field - aligned currents during the substorms 亞暴期間場向電流的特征
The anomalous fac pair creates a transient dusk - dawn electric field over the polar cap , tailing behind the original region current and drifting towards the night side until it falls into oblivion 該異常場向電流對在極蓋區(qū)形成瞬間昏晨電場,尾隨原區(qū)電流向夜側(cè)方向漂移直至湮沒。
The characteristics of the field - aligned currents facs measured by isee 1 and 2 satellites during substorms are studied . these characteristics include the variations of facs with the interplanetary magnetic field , local time , 分析了由isee - 1和isee - 2飛船在亞暴期間觀測到的場向電流的特性,包括場向電流所伴隨的行星際磁場地方時與
Such a response depends on the strength of the interplanetary shock : for a stronger shock , the new region current gets stronger , extends for a longer distance towards the equator , and reaches a lower latitude 這一響應(yīng)過程和行星際激波強度有關(guān):激波強度越強,新生的區(qū)場向電流也越強,它向赤道方向延伸的距離也越大,能到達的緯度也越低。
It is shown that under the action of the shock , the region current moves towards the midnight , accompanied by a successive occurrence of two fac structures : an anomalous fac pair of opposite direction to the region current and a new region current of the same direction 模擬結(jié)果表明,在激波的作用下,電離層區(qū)電流系統(tǒng)向子夜方向運動,在向陽側(cè)相繼出現(xiàn)與原區(qū)電流反向的異常場向電流對和同向的新生區(qū)電流對。
The background interplanetary magnetic field is spiral with a vanishing south - north component , the initial ionosphere is dominated by the region field - aligned current ( fac ) and the corresponding dawn - dusk electric field , and the interplanetary shock collides with the earth along the sun - earth line 背景行星際磁場為螺旋場,南北分量為零;初始電離層由區(qū)場向電流和相應(yīng)的晨昏電場所主導(dǎo);行星際激波沿日地連線方向撞擊地球。