Linkage of liquid conductivity of glacier ice with its alkalinity over the north Qinghai-Xizang (Tib

来源 :Science in China(Series D:Earth Sciences) | 被引量 : 0次 | 上传用户:bolinyuan
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Liquid conductivity (EC) measurement was conducted for the samples collected from several snow pits and ice cores over the Qinghai-Xizang (Tibet) Plateau, with their time range covering seasonal, decadal and centennial scales. Unlike the previous attention mostly focused on the acidity (H+) responding to the solid conductance (ECM) of glacial ice, we introduce the alkalinity (OH-) of snow and ice to show how it responds to EC. Strong linear relationship was established between EC and OH- for these snow pits and ice cores. Positive correlation is also established between EC and major cations (Ca2+, Mg2+, Na+ and K+). Since the cations are known as the proxies for the intensity of mineral dust influx onto glaciers of the northern Qinghai-Xizang Plateau, we believe that EC could be used as an indicator for the history of dust input in deep ice core study. In fact, records in Guliya ice core since the Little Ice Age (LIA) indicate that dust load in glacier may depend on the combination of temperature and hum Liquid conductivity (EC) measurement was conducted for the samples collected from several snow pits and ice cores over the Qinghai-Xizang (Tibet) Plateau, with their time range covering seasonal, decadal and centennial scales. Unlike the previous attention principally on the acidity (H +) responding to the solid conductance (ECM) of glacial ice, we introduce the alkalinity (OH-) of snow and ice to show how it response to EC. Strong linear relationship was established between EC and OH- for these snow pits and Positive correlation is also established between EC and major cations (Ca2 +, Mg2 +, Na + and K +). Since the cations are known as the proxies for the intensity of mineral dust influx onto glaciers of the northern Qinghai-Xizang Plateau, we believe that EC could be used as an indicator for the history of dust input in deep ice core study. In fact, records in Guliya ice core since the Little Ice Age (LIA) indicate that dust load in glacier may depend on the combination of temperature and hum
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