Using a geochemical method of dissolved and insoluble fractions to characterize surface snow melting and major element elution

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	Using a geochemical method of dissolved and insoluble fractions to characterize surface snow melting and major element elution
	Wu, Guangjian; Li, Peilin; Zhang, Xuelei; Zhang, Chenglong
刊名	JOURNAL OF GLACIOLOGY
	2018-01-12
卷号	64 期号:248 页码:1003-1013
关键词	melt-surface mountain glaciers snow and ice chemistry
ISSN号	0022-1430
文献子类	Article
英文摘要	A geochemical method to characterize post-depositional melting and elution is demonstrated using inductively coupled plasma mass spectrometry to measure concentrations of dissolved and insoluble fractions of major crustal elements in snow samples collected from March 2006 to January 2010 at Urumqi Glacier No. 1, Tien Shan. Dust from these samples has compositional homogeneity, suggesting that dust has a stable dissolved fraction percentage (DFP, calculated as dissolved/(dissolved + insoluble)%). Calcium has the highest DFP (averaging 61.5 +/- 19.4%), followed by Na (30.4 +/- 19.6%), Mg (13.2 +/- 9.8%), and K (7.9 +/- 9.8%). Acid input can affect dissolution of Na and Ca. Taking DFP values of unmelted samples as the reference, the higher DFPs refer to strengthened dissolution from acid input, while the lower ones refer to elution. Based on the DFP difference between unmelted and eluted states, an elution sequence Ca > Na > Mg > K is obtained. Some details such as the beginning and the ending stages of elution can be found by DFP and acid input index, while using ion concentration is not capable of this. Our results reveal that acid input is an important mechanism for DFP changes, that the DFP index can provide an effective assessment of snow elution, and that this will aid in understanding low latitude ice cores.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40793]
专题	生态环境研究中心_大气环境科学实验室
推荐引用方式 GB/T 7714	Wu, Guangjian,Li, Peilin,Zhang, Xuelei,et al. Using a geochemical method of dissolved and insoluble fractions to characterize surface snow melting and major element elution[J]. JOURNAL OF GLACIOLOGY,2018,64(248):1003-1013.
APA	Wu, Guangjian,Li, Peilin,Zhang, Xuelei,&Zhang, Chenglong.(2018).Using a geochemical method of dissolved and insoluble fractions to characterize surface snow melting and major element elution.JOURNAL OF GLACIOLOGY,64(248),1003-1013.
MLA	Wu, Guangjian,et al."Using a geochemical method of dissolved and insoluble fractions to characterize surface snow melting and major element elution".JOURNAL OF GLACIOLOGY 64.248(2018):1003-1013.