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Concentration of nitrate in the Guliya ice core from theQinghai-Xizang Plateau and the solar activity 被引量:5

Concentration of nitrate in the Guliya ice core from theQinghai-Xizang Plateau and the solar activity
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摘要 The variations of NO\+-\-3 concentration in the Guliya ice core are reconstructed for recent about 1 000 a. Spectrum analysis of NO\+-\-3 indicates significant periodicities in the variations of NO\+-\-3 concentration, which coincide with the periodicities of the solar activity. Therefore, a positive correlation between the variations of NO\+-\-3 concentration and the solar activity is found. The variations of NO3+- conccntration in the Guliya ice core are reconstructed for recent about 1 000 a. Spectrum analysis of NO3+- indicates significant periodicities in the variations of NO3+- concentration, which coincide with the periodicities of the solar activity. Therefore, a positive correlation between thc variations of NO3+- concentration and the solar activity is found.
出处 《Chinese Science Bulletin》 SCIE EI CAS 1998年第10期841-844,共4页
关键词 GULIYA ICE CORE NO - 3 CONCENTRATION solar activity. Guliya ice core NO3+- concentration solar activity
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