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通过对南极洲伊利莎白公主地区冰雪中几种主要离子资料的分析 ,结合前人的工作对本地区主要离子的来源、传输过程和沉积方式做了初步探讨 .结果表明 :南极洲伊利莎白公主地区冰盖中的海盐离子主要来源于周边亚南极地区的海洋 ,nss SO4 2 -主要来源于中低纬度海洋生物的释放和火山喷发 ,而 NO3 -主要来源于中低纬度地区的闪电和极地高空中的各种大气过程 ;海盐离子(主要指 Cl-,Na+ ,Mg2 + ,ss SO4 2 -)通过近距离低空传输到南极冰盖 ,而 nss SO4 2 -和 NO3 -很可能是通过远距离高空传输到极地冰雪中 ,具体过程为 :nss SO4 2 -和 NO3 -在对流层顶部平流层底部呈带状输送到极地上空 ,然后辐射下沉 ,再辐散到其他地区 ;本地区大气中各主要离子浓度足够大 ,足以使本地区冰雪中主要离子浓度不随积累率的变化而变化 ,即离子浓度并不受积累率的影响 .各主要离子干、湿沉积所占比重的计算结果表明 ,本地区离子沉积方式以湿沉积为主 .
Based on the analysis of ice and snow in the area of Princess Elizabeth in Antarctica, the author explored the origin, transport process and deposition of the main ions in the area in combination with their predecessors.The results show that the ice of Princess Elizabeth in Antarctica The sea salt ions in the lid mainly originated from the sea in the sub-Antarctic region. The nss SO42- mainly originated from the release of low-latitude marine organisms and volcanic eruptions. NO3- mainly originated from the lightning in the middle and low latitudes and from the polar Various atmospheric processes; sea salt ions (mainly Cl-, Na +, Mg2 +, and SO4 2 -) are transported to the Antarctic ice sheet through short-range low altitude, and nss SO4 2 - and NO3 - are likely to be transmitted through long- Polar ice and snow, the specific process is: nss SO4 2 - and NO3 - at the bottom of the troposphere stratosphere at the bottom of the ribbon transported to the polar over, and then sinking radiation and then diverge to other regions; the region of the main ion concentrations in the atmosphere sufficient Large, enough to make the main ion concentration in ice and snow in the region does not change with the accumulation rate changes, that is, the ion concentration is not affected by the accumulation rate of the main ion dry, wet The results show that the proportion of the product, this region ions are deposited sediments in a wet manner.