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首页> 外文会议>International astronautical congress >INVESTIGATING CORONAL MASS EJECTIONS WHICH CAUSE GEOMAGNETIC STORMS WITH WEAK STORM SUDDEN COMMENCEMENTS USING ACE SATELLITE DATA
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INVESTIGATING CORONAL MASS EJECTIONS WHICH CAUSE GEOMAGNETIC STORMS WITH WEAK STORM SUDDEN COMMENCEMENTS USING ACE SATELLITE DATA

机译：使用ACE卫星数据调查引起弱暴雨爆发的地磁暴的冠状磁暴

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Electronic and magnetic field surrounds the Earth. When a Coronal Mass ejection (CME) is occurred from the Sun and it is heading to the Earth, plasma in CME cannot reach at the surface of the earth because of geomagnetic field. Instead of this, plasma encircle and rotate the Earth. As a result, they make electric current and magnetic field. It occurs geomagnetic storm. For measure of geomagnetic storms, wc use Dst index. Geomagnetic storms usually have 3 phases in Dst index. First, initial phase, Dst index is increasing form approximately 0 Dst index(nT) because magnetopausc is contracted by interplanetary shock. Initial phase is also called storm sudden commencement. Second, main phase, Dst index is decreasing rapidly. Usually when Dst index is below -30nT wc say geomagnetic storm. Then recovery phase is the last. Dst index is increasing slowly in this phase. Sometimes initial phase is not appeared, wc investigate CMEs and their interplanetary shocks that arc causing geomagnetic storms without SSC and with very weak SSC. ACE satellite data and Dst indices arc used for this work. The Advanced Composition Explorer (ACE) is a mission for explore space. Its orbit is Lagrangian 1 point which is a point of Sun Earth gravitational equilibrium and 1.5 million km form the Earth. Data of Two instruments SWEPAM for solar wind parameters and MAG for magnetic field are mostly used in this study. The bulk of strong SSCs are caused by fast solar wind speed and high proton density. But there are very weak and no SSC cases occasionally even they have high proton density. Wc have found 15 cases that have weak and no SSC of geomagnetic storms during from 2000 to 2006. 9 cases have high proton density and 6 cases have low proton density. The most interest thing is magnetic field. We analysed /B/, Bgsm2, Bgsmy, Bgsmx, BS, BA. 13 of 15 cases look like they have 2 or more magnetic field flux rope. 4 cases have magnetic filed ropes and 2 cases have single magnetic field rope in the low proton density group. 9 of 9 cases have plural magnetic field flux rope in the high proton density group with strong storm. This means that we suggest plural magnetic field or shocks or CMEs occur weak or no SSC storms. We are going to check other cases of weak and eccentrically strong SSC storms by more parameters.
机译：电磁场环绕地球。当从太阳发生日冕质量抛射（CME）并向地球移动时，由于地磁场，CME中的等离子体无法到达地球表面。取而代之的是，等离子环绕地球并旋转地球。结果，它们产生电流和磁场。它发生了地磁风暴。为了测量地磁风暴，wc使用Dst指数。地磁风暴的Dst索引通常分为3个阶段。首先，在初始阶段，Dst指数从大约0 Dst指数（nT）开始增加，这是因为磁石棉因行星际冲击而收缩。初始阶段也称为风暴突然开始。第二，主要阶段，Dst指数正在迅速下降。通常，当Dst指数低于-30nT wc时，请说是地磁风暴。然后恢复阶段是最后一个阶段。在此阶段，Dst指数正在缓慢增加。有时没有出现初始阶段，因此对CME及其引起的行星际冲击进行了调查，这些冲击在没有SSC且SSC非常弱的情况下引起了地磁风暴。这项工作使用了ACE卫星数据和Dst索引。高级合成资源管理器（ACE）是探索太空的任务。它的轨道是拉格朗日1点，这是太阳地球重力平衡点，距地球150万公里。本研究中主要使用两种仪器SWEPAM的太阳风参数数据和MAG磁场的数据。强大的SSC的大部分是由太阳风速快和质子密度高引起的。但是，这种情况非常弱，即使质子密度很高，也很少有SSC案例。在2000年至2006年期间，Wc发现了15例弱磁且没有SSC的地磁暴。质子密度高的9例，质子密度低的6例。最有趣的是磁场。我们分析了/ B /，Bgsm2，Bgsmy，Bgsmx，BS，BA。 15例病例中有13例看起来好像有2条或更多的磁场通量绳。低质子密度组中有4例有磁场绳，有2例有单一磁场绳。 9例中有9例在质子密度高的组中有多个磁场线，且风暴强烈。这意味着我们建议使用多个磁场或电击或CME发生微弱或没有SSC风暴。我们将通过更多参数来检查SSC风暴偏弱和偏强的其他情况。

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