各种离子综合定年的结果表明,南极冰盖伊利莎白公主地区LGB65处钻取的一支50 m长雪芯代表了过去250 a左右的积累量,非海盐硫酸根离子明显记录了过去250 a来的16次火山活动,与同时期其他冰芯记录相比,记录的火山活动更为完整,表明中小强度的火山活动可能在低积累区反映更为明显。 The results of the comprehensive dating of various ions show that a 50 m long snow core drilled at LGB65 in the southern part of Princess Elizabeth, Antarctica, represents the accumulation over the past 250 years. Non-sea salt sulfate ions clearly record the past 250 years Compared with other ice core records in the same period, the recorded volcanic activity is more complete, indicating that volcanic activities of small and medium intensity may reflect more clearly in the low accumulation area.