CAJ | 학술논문

利用南极中山站和戴维斯站观测的感应式磁力计数据，运用互谱分析方法统计分析了2004年3、6、9、12月的Pc1-2波事件，研究了Pc1-2波出现频次、中心频率和振幅对季节和磁地方时的分布。结果共获得有效Pc1-2波事件2932件，其中，出现在3、9月较多，分别占51．4％和26．1％，12月次之，占18．6％，6月最少，占3．8％。两站的Pc1-2波事件有59．8％出现在磁中午（0800-1000 UT）附近，且在午后靠近磁中午的时候Pc1-2波的中心频率比在午前靠近磁中午的时候大，振幅则在0800 UT时出现最大值；此外，在6月，Pc1-2波的平均中心频率最大，而平均振幅则最小。这些结果表明，极隙区纬度Pc1-2波的传播在很大程度上受电离层电导率的影响。
이용남겁중산참화대유사참관측적감응식자력계수거，운용호보분석방법통계분석료2004년3、6、9、12월적Pc1-2파사건，연구료Pc1-2파출현빈차、중심빈솔화진폭대계절화자지방시적분포。결과공획득유효Pc1-2파사건2932건，기중，출현재3、9월교다，분별점51．4％화26．1％，12월차지，점18．6％，6월최소，점3．8％。량참적Pc1-2파사건유59．8％출현재자중오（0800-1000 UT）부근，차재오후고근자중오적시후Pc1-2파적중심빈솔비재오전고근자중오적시후대，진폭칙재0800 UT시출현최대치；차외，재6월，Pc1-2파적평균중심빈솔최대，이평균진폭칙최소。저사결과표명，겁극구위도Pc1-2파적전파재흔대정도상수전리층전도솔적영향。
We recorded induction magnetometer data from Zhongshan and Davis Stations in Antarctica , for March , June , September, and December in 2004.We used cross-spectrum analysis to statistically study Pc1-2 wave occurrence, center frequency , and amplitude variations with respect to the seasons and magnetic local time .Of 2 932 valid wave events, Pc1-2 waves had a higher occurrence in March (51.4%) and September (26.1%) than in December (18.6%) and June (3.8%), and occurred most frequently near the magnetic local noon (59.8%at 0800-1000 UT) .The wave center frequency was higher post-noon than pre-noon and the wave amplitude reached a maximum at 0800 UT.The maximal center frequency and minimal amplitude occurred in June .These results suggest that Pc1-2 wave properties near the cusp latitudes are strongly influenced by ionospheric conductivity .