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| 1 | Hydrochemical Characteristics and Solute Dynamics of Meltwater Runoff of Urumqi Glacier No.1,Eastern Tianshan,Northwest China显示文摘Hydrochemical characteristics and solute dynamics of bulk meltwater draining from Urumqi Glacier No.1 were investigated in years 2006 and 2007.The glacial meltwater was slightly alkaline with the mean pH of 7.64 and 7.61 in 2006 and 2007,respectively.In the meltwater,the dominant anions were the bicarbonate and sulphate,and the dominant cation was calcium.The concentration of major cations were varied as c(Ca2+) > c(Mg2+) > c(K+) > c(Na+),while the order for the cations was c(HCO3) > c(SO42) > c(NO3) > c(Cl).The total dissolved solids(TDS) in meltwater had inverse relationships with the diurnal discharge.The major ion composition of meltwater was mainly controlled by rock weathering as inferred from the Gibbs model.Furthermore,the ion ratios and Piper diagram indicated that the main processes controlling the meltwater chemistry were carbonate weathering,pyrite weathering and feldspar weathering in rocks,and Ca2+ and HCO3 were the dominant ions during the carbonate weathering process.Solute flux calculation at Glacier No.1 station suggested that chemical denudation rates were 11.46 and 13.90 ton.km 2.yr 1 in 2006 and 2007,respectively. | FENG Fang LI Zhongqin JIN Shuang DONG Zhiwen WANG Feiteng | 2012 | Journal of Mountain Science2012，9，4： | 10 |
| 2 | 祁连山七一冰川流域微量元素的日变化及采样后未过滤的影响显示文摘分析了七一冰川流域河水中微量元素的日变化特征和水文控制作用以及采样后的未过滤对微量元素浓度的影响.结果表明,主要可溶性离子以及元素Li,Sr和Ba主要以单价或二价离子形态传输且其浓度在日时间尺度上与冰川径流量呈反相关关系,反映了这些元素的水文控制作用且说明其可作为冰下水文调查的指示器.其他元素(如Fe,Al和Cr)的浓度与冰川径流量无相关关系,反映了这些元素的物理化学控制作用.样品采集后的立即过滤对元素Sr和Ba浓度的影响不明显,但对其他元素(如Fe,Al,V,Ti和Co)的影响显著,说明这些元素在溶液中主要以颗粒相传输且其浓度与颗粒物的数量密切相关,而且因矿物的进一步溶解在冰川水文水化学研究中对采集的河水样品进行立即过滤是极其必要的. | 李向应 秦大河 井哲帆 李月芳 王宁练 | 2012 | 中国科学:地球科学2012，42，11： | 4 |
| 3 | Diurnal hydrological controls and non-filtration effects on minor and trace elements in stream water draining the Qiyi Glacier, Qilian Mountain显示文摘Diurnal minor and trace elements in glacial outflow water draining the Qiyi Glacier and associated hydrological controls as well as the filtration effects on water chemistry were examined. Results show that major ions, Li, Sr, and Ba are exported predominately as mobile monovalent or divalent ions and are controlled by hydrological variations over the diurnal cycle exhibiting an inverse concentration with discharge, suggesting that Li, Sr, and Ba can be used as tracers in subglacial hydrological investigations. Conversely, other elements (e.g. Fe, Al, and Cr) exhibit variations that are not strongly correlated with the discharge reflecting the physicochemical controls. The non-filtered operation appears not to strongly influence Sr and Ba, but has an effect on some elements such as Fe, Al, V, Ti, and Co, indicating that these changed elements are transported in particulate forms and thus their concentrations are highly dependent on particulate numbers in solutions. This implies that the immediate filtration after sampling is essential in hydrochemical studies at Alpine glacial basins due to subsequent mineral dissolution. | LI XiangYing QIN DaHe JING ZheFan LI YueFang WANG NingLian | 2013 | Science China Earth Sciences2013，56，1： | 3 |
| 4 | Water Chemistry and Hydrometeorology in a Glacierized Catchment in the Polar Urals,Russia显示文摘This study aims to determine the relationships between local meteorological conditions,proglacial river discharge and biogeochemical processes operating in a periglacial basin located in the Polar Ural mountain range, Russia. Fieldwork was conducted in the catchment of Obruchev Glacier(13 km2) during the summer peak flow period in 2008. River discharge was dominated by snowmelt and changed from 3300 l s-1 to less than 1000 l s-1. The mean daily air temperatures of stations situated in the mountain tundra and near Obruchev Glacier from July 11 th to August 1st 2008 were 14.4°C and 10.3°C, respectively. The glacial river had low total dissolved solids varying from 4.5 to 9 mg l-1 and coefficients of correlation between Na+ and Cl-, K+ and Cl-, as well as NH4+ and Cl- were 0.94, 0.90 and 0.84, respectively. Rainfall events affected the snowmelt initiation and provided an essential part of the discharge during the intense snowmelt period, which occurred from July 11 th to July 18 th 2008. Data showed that Na+ and K+ in the surface water derived from snowmelt rather than chemical weathering of silicates. Also, it was obtained that NO3- derived from the melting snowpack, whereas ammonification occurring under the snowpacks was the primary source for NH4+. | STACHNIK Lukasz WALACH Piotr UZAROWICZ Lukasz YDE Jacob C. TOSHEVA Zornitza WRONSKA-WALACH Dominika | 2014 | Journal of Mountain Science2014，11，5： | 2 |
| 5 | Field evidences showing rapid frontal degeneration of the Kangriz glacier,western Himalayas,Jammu&Kashmir显示文摘Life cycle of glaciers in the Himalayan region has notably changed due to the climatic variability since last few decades. Glaciers across the world and specially the Himalayan glaciers have shown large scale degeneration in the last few decades. Himalayan glaciers serve as an important fresh water resource for the downstream communities, who are dependent on this water for domestic and other purposes. Therefore, glacier shrinkage and the associated hydrological changes pose a significant problem for regional-scale water budgets and resource management. These issues necessitate the regular and rigorous monitoring of the wastage pattern of the Himalayan glaciers in field and using satellite remote sensing data. In this work, we report rapid and enhanced degeneration of the frontal part of the Kangriz glacier, Jammu and Kashmir(J & K), in terms of surface melting, debris cover, snout characteristics and meltwater discharge. Ablation data acquired during 2016-2017 shows the average lowering of the frontal part of the glacier to be ~148 ± 34 cm, one-third of which was found to have occurred within a 13 day time period in September, 2017. Also, the quantum of ice melt was found to be inversely influenced(r =-0.84) by the debris thickness. 15 day meltwater discharge measurement revealed its strong relationship with snout disintegration pattern, evidenced twice during the said time period. Volume of water discharged from the glacier was estimated to be 7.91×10~6 m^3 for the measurement duration. Also, mean daily discharge estimated for the 15 days interval showed good positive correction(r = 0.78) with temperature indicating the direct dependency of the former on land surface temperature conditions of the region. Besides the lowering and discharge observations, the frequent ice-block break-offs at the glacier snout further enhance its overall drastic degeneration. The study suggests that, being the largest glacier in the Suru basin, the Kangriz glacier needs to be continuously monitored in order to understand its glacio-hydrological conditions. | garg siddhi shukla aparna mehta manish kumar vinit samuel shruti anna bartarya s.k. shukla uma kant | 2018 | Journal of Mountain Science2018，15，6： | 0 |
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