Spatial distribution of marine chemicals along a transect from Zhongshan Station to the Grove Mountain area, Eastern Antarctica  

作　　者：QIN Xiang LI ChuanJin XIAO CunDe HOU ShuGui DING MingHu REN JiaWen QIN DaHe 

机构地区：[1]State Key Laboratory of the Cryospheric Sciences, the Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences [2]School of Geographic and Oceanographic Sciences, Nanjing University [3]Chinese Academy of Meteorological Sciences

出　　处：《Science China Earth Sciences》2014年第10期2366-2373,共8页中国科学（地球科学英文版）

基　　金：supported by the Innovative Research Group of the National Natural Science Foundation of China(Grant No.41121001);the National Basic Research Program of China(Grant No.2013CBA01804);the Foundation for Excellent Youth Scholars of CAREERI,Chinese Academy of Sciences,the National Natural Science Foundation of China(Grant Nos.41201069,40776002,40825017,41171052);the Hundred Talent Project of Chinese Academy of Sciences,the Polar Scientific Explore Organizing Committee Foundation(Grant Nos20080202,0852H71001);State Oceanic Administration of People’s Republic of China Project on Climate in Polar Regions(Grant Nos.CHINARE 2012-04-04,CHINARE 2012-02-02)

摘　　要：This study investigates the regional distribution of marine aerosol originated species （Na＋, CI-, nss-SO42- and MSA） in the snow pits （or firn cores） collected along a transect between Zhongshan Station and the Grove Mountain area （450 km inland） on the eastern side of the Lambert Glacier Basin. Concentrations of Na＋ and Cl- decrease exponentially with distance from the coast to 100 km inland （i.e., 1500 m a.s.1.）. Statistical results demonstrate that distance from the coast inland and elevation af-fect the concentration of sea-salt originated ions in inland areas significantly. Increase of Cl-/Na＋ ratio and higher variability in its standard deviation suggest that there are other sources of ions in addition to sea-salt in inland areas of the Antarctic conti- nent. The concentrations of Na＋ and Cl- from nine sampling sites in the Grove Mountain area are relatively higher than those from sites along CHINARE transect, although all sites are at similar distance inland. This phenomenon indicates that the barri- er effect of the mountain may be the most important factor influencing ion deposition. In addition, nss-SO42- and MSA vary differently, with nss-SO42- decreasing with distance more significantly. This implies that sources and transporting pathways influence the deposition of the two sulfur compounds considerably, being supported by the spatial pattern of correlation coeffi- cients between the nss-SO42- and MSA.This study investigates the regional distribution of marine aerosol originated species(Na+, Cl-, nss-SO42- and MSA) in the snow pits(or firn cores) collected along a transect between Zhongshan Station and the Grove Mountain area(450 km inland) on the eastern side of the Lambert Glacier Basin. Concentrations of Na+ and Cl- decrease exponentially with distance from the coast to 100 km inland(i.e., 1500 m a.s.l.). Statistical results demonstrate that distance from the coast inland and elevation affect the concentration of sea-salt originated ions in inland areas significantly. Increase of Cl-/Na+ ratio and higher variability in its standard deviation suggest that there are other sources of ions in addition to sea-salt in inland areas of the Antarctic continent. The concentrations of Na+ and Cl- from nine sampling sites in the Grove Mountain area are relatively higher than those from sites along CHINARE transect, although all sites are at similar distance inland. This phenomenon indicates that the barrier effect of the mountain may be the most important factor influencing ion deposition. In addition, nss-SO42- and MSA vary differently, with nss-SO42- decreasing with distance more significantly. This implies that sources and transporting pathways influence the deposition of the two sulfur compounds considerably, being supported by the spatial pattern of correlation coefficients between the nss-SO42- and MSA.

关 键 词：marine chemicals SEA-SALT sulfur compounds Lambert Basin 

分 类 号：P732[天文地球—海洋科学] P532