| 乌鲁木齐河源1号冰川雪-冰界面含氮离子迁移研究 |
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| 关键词:Urumqi Glacier No. 1 nitrate NO3-) ammonium (NH4+) firn-ice interface |
| 基金项目:国家自然科学基金项目(编号: 41161012、40701035)；教育部新世纪优秀人才支持计划项目(编号: NCET-10-0019)；国家重点基础研究发展计划(973)项目(编号: 2010CB951003)；中国科学院知识创新工程重要方向项目(编号: KZCX2-EW-311)；冰冻圈科学国家重点实验室自主基金项目(编号: SKLCS-ZZ-2010-04) |
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| 摘要: |
| Observed Nitrogen-Containing Ion Transportation at the Firn-Ice Interface of the Urumqi Glacier No. 1 in Tianshan Mountains |
| In order to investigate the nitrogen-bearing ion transportation at the firn-ice interface in the accumulation zone of glacier, the authors collected 64 sets of firn and ice samples at the Urumqi Glacier No. 1 in the Tianshan Mountains from November 2004 to March 2006, and analyzed the concentrations of nitrate (NO3-) and ammonium (NH4+).The results indicated that the mean ion concentration at firn bottom was higher in the dry season (from November to March) than that in the wet season (from April to October), and the mean ion concentration at the ice top was higher in the wet season than that in the dry season, which was observed at the firn-ice interface with the widths of 5 cm and 15 cm, respectively; the mean concentration ratio of ions between the firn bottom and the ice top in the dry season was generally higher than that in the wet season, suggesting that during the dry season the concentration at the firn bottom was generally higher than that at the ice top, whereas during the wet season the situation was quite opposite; the ion transportation at the firn-ice interface constituted a process of recording the environmental information, which was influenced by the melt water of snowpack, air temperature and some other factors. |
| WANG Sheng-jie,ZHANG Ming-jun,WANG Fei-teng,LI Zhong-qin,ZHANG Xiao-yu.2011.Observed Nitrogen-Containing Ion Transportation at the Firn-Ice Interface of the Urumqi Glacier No. 1 in Tianshan Mountains[J].Acta Geoscientica Sinica,32(6):699-706. |
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