CAJ | 학술논문

利用改进的时变二维电离层物理模式对一次超强磁暴期间低纬电离层效应进行了数值模拟研究。2000年7月15-16日超强磁暴期间，ROCSAT-1卫星、DMSP卫星、GPS／TEC等在美洲扇区观测到赤道附近沿纬度扩展深度耗空的等离子体槽和出现在中纬度的SED现象。将暴时由ROCSAT-1卫星实测赤道区纬圈电场和由HWM-07／DWM-07模型预测的水平风等作为物理模式的驱动力输入，对美洲扇区低纬电离层的暴时响应特征进行了数值模拟。模拟结果表明：在磁暴主相期间，模式给出了与DMSP卫星观测数据比较一致的结果；并清楚地重现了暴时赤道电离层异常的演化过程。
이용개진적시변이유전리층물리모식대일차초강자폭기간저위전리층효응진행료수치모의연구。2000년7월15-16일초강자폭기간，ROCSAT-1위성、DMSP위성、GPS／TEC등재미주선구관측도적도부근연위도확전심도모공적등리자체조화출현재중위도적SED현상。장폭시유ROCSAT-1위성실측적도구위권전장화유HWM-07／DWM-07모형예측적수평풍등작위물리모식적구동력수입，대미주선구저위전리층적폭시향응특정진행료수치모의。모의결과표명：재자폭주상기간，모식급출료여DMSP위성관측수거비교일치적결과；병청초지중현료폭시적도전리층이상적연화과정。
Effects of the low-latitude ionosphere are numerical investigated during a super magnetic storm using an improved time-depended physical model. During the super magnetic storm of 15- 16 July, 2000, a deep depleted electron equatorial trough expended to rather higher latitudes and SED phenomena at middle latitude are well observed by ROCSAT-1, DMSP and GPS/TEC. In order to numerically investigate the ionospheric effects responded to the storm in the American sector, zonal electric field from the ROCSAT-1 and horizontal neutral wind predicted by HWM-07/DWM-07 model are used as driving inputs of the low-latitude ionospheric physical model. It is founded that the electron density from the model are well con- sistent with observations from DMSP F15 around 850 km during the main phase of the storm, and clearly reproduced the developing of the Equatorial Anomaly during the storm.