| 雪冰电导率反映的南、北极和青藏高原大气环境差异 |
| |
| 引用本文： | 效存德,秦大河,任贾文,李忠勤,盛文坤.雪冰电导率反映的南、北极和青藏高原大气环境差异[J].极地研究,1999,11(1):4-10. |
| |
| 作者姓名： | 效存德 秦大河 任贾文 李忠勤 盛文坤 |
| |
| 作者单位： | 中国科学院兰州冰川冻土研究所冰芯与寒区环境开放研究实验室,兰州,730000 |
| |
| 基金项目： | 中国科学院重大项目,国家科技攻关计划,中国科学院冰冻圈专项资助项目 |
| |
| 摘 要： | 青藏高原（无论南部、北部）雪冰电导率与雪冰体的酸碱度及雪冰内各类杂质成分的关系明显不同于极地冰盖（南极冰盖与格陵兰冰盖），青藏高原雪冰电导率依赖于地壳来源的碱性矿物盐类杂质（如Ｃａ２＋，Ｍｇ２＋，ＳＯ２－４等），因而与雪冰酸度（即Ｈ＋）呈反相关；极地冰盖雪冰电导率依赖于海洋来源的酸根离子（如Ｃｌ－，ＳＯ２－４等），因而与雪冰酸度呈正相关。但在北极地区，雪冰电导率与各离子的关系存在复杂的地域分异，如在北极中心地区，极可能由于“北极霾”的干扰，打破了格陵兰冰盖内电导率与酸根离子间明确的函数关系。总之，雪冰电导率是寒区大气环境的替代性“指示器”
|
| 关 键 词： | 北极 南极 青藏高原 电导率 pH值 大气环境 |
THE DIFFERENCE OF ATMOSPHERIC CHEMICAL LOADINGS BETWEEN ANTARCTICA,ARCTIC AND THE QINGHAI TIBETAN PLATEAU,SHOWN BY ELECTRICAL CONDUCTIVITY OF SNOW AND ICE |
| |
| Xiao Cunde,Qin Dahe,Yao Tandong,Ren Jiawen,Sheng Wenkun.THE DIFFERENCE OF ATMOSPHERIC CHEMICAL LOADINGS BETWEEN ANTARCTICA,ARCTIC AND THE QINGHAI TIBETAN PLATEAU,SHOWN BY ELECTRICAL CONDUCTIVITY OF SNOW AND ICE[J].Chinese Journal of Polar Research,1999,11(1):4-10. |
| |
| Authors: | Xiao Cunde Qin Dahe Yao Tandong Ren Jiawen Sheng Wenkun |
| |
| Abstract: | The relationships of ECM with ice acidity and impurities concentrations are much different between the Tibetan Plateau and the polar regions. On the Tibetan Plateau,ECM is contributed by mineral ions(i.e.,Ca 2 ,Mg 2 ,SO 2- 4,etc.) mainly derived from crustal sources, and thus display an actively linear correlation between ECM and these ions.While in polar ice sheet,however,ECM of snow and ice is mainly contributed by acidic roots such as Cl -,SO 2- 4 and NO - 3 that mostly come from ocean.Therefore,there is good relationship between ECM and concentration of H .However,the relationship between ECM and major ions has complicate geographical differentiation in the whole Arctic. For instance,there no longer exits the same simple relationship in the central Arctic as in the Greenland Ice Sheet,probably due to the disturbance of Arctic Haze. In general, ECM of snow and ice is a potential indicator of atmospheric environment of cold regions. |
| |
| Keywords: | Arctic Antarctic ice sheet Qinghai Tibetan Plateau ECM pH atmospheric environment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《极地研究》浏览原始摘要信息 |
| 点击此处可从《极地研究》下载免费的PDF全文 |
|
