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中文摘要: 本文对在西沙群岛的永兴岛与琛航岛于1988年11月东北季风盛行期取到的小阵雨样品进行了分析,结果表明:样品的pH值在5.90—7.45间:雨水中离子浓度高于西南季风期的小雷阵雨样品;离子中Cl-与Na+的含量较高,分别占阴离子总数的86.6%和阳离子总数的59.8%;Cl-与SO-4之比值(当量比)为7.6,与我国大陆上SO-4在阴离子中占优势的情况不同。在雨水中K+,Ca++,Mg++,SOSO-4有程度不同的富集过程,“超量”的SOSO-4-应来自于东亚大陆。
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Abstract:The paper analyzes samples of showery rain taken in Novmber, 1988 in Yongxing Is.and shenhang Is.,Xisha Islands, when northeast monsoon was prevailing .The results suggest that pH values of the samples are between 5.90-7.45. The concentration of ions is greater than that of thumder showers of southwest summer monsoon. The concentration of chlorine and sodium ions are large, which are about 86.6%and 59.8% of the anion and cation in total, respectively. The equivalent ratio of chlorine to sulfate iong is 7.6, Contrasting with sulfate predominance in cation for the mainland of China. The enriching processes [of K+,Ca++,Mg++, and SO-4 are in varying degrees. The SO-4 and F- of "extraquantity" are from the continent of East Asia.
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基金项目:国家气象局科学基金云物理项目
| 作者 | 单位 |
| 吴兑 | 广东省热带海洋气象研究所 |
| Author Name | Affiliation |
引用文本：
吴兑,1990.西沙群岛旱季小阵雨的酸度及化学成分[J].气象,16(9):18-22.
,1990.The acidity and chemical composition of showery rain over -Xisha Islands in dry season[J].Meteor Mon,16(9):18-22.
吴兑,1990.西沙群岛旱季小阵雨的酸度及化学成分[J].气象,16(9):18-22.
,1990.The acidity and chemical composition of showery rain over -Xisha Islands in dry season[J].Meteor Mon,16(9):18-22.