摘要
针对作业期（5～9月）在密云水库上游汇水区开展以飞机播撒AgI催化剂为主的人工增雨试验,在水库与白河入口处2个采样点对水质进行定期连续监测,利用2004年6月至2006年12月监测数据,发现2个采样点所测组分与变化趋势大致相同;分析了水库水质Ag变化特征,得出Ag月变化在作业期间波动较大,其平均值作业期间低于非作业期间,并呈现逐年下降趋势。化学特征2个采样点无明显差异,阴离子SO4^2-浓度最高,其次是Cl^-和NO3^-;碱金属Ca,其次是Mg和Na浓度最高。人工增雨后,水库蓄水量虽然增加但水库水质未发生明显变化。
The AgI seeding experiments using seeding aircraft were carried out to enhance precipitation at the upriver catchments of Miyun Reservoir from May to September. The regular and continuous measurements were conducted at two sampling spots located at the entrance of the Baihe River and the the reservoir, and by using of the monitoring data, an analysis is made of the temporal and spatial characteristics of water quality in the reservoir from June 2004 to December 2006. The measurements show the same chemical composition and variation trend at two sampling spots. The Ag variation characteristics of water in the reservoir were studied, and the results show that the monthly Ag concentrations changed more greatly during the seeding period; the average Ag concentrations during the seeding period were lower than those during non-seeding period; and there was a decrease tendency year after year. The chemical features are not obviously different at two sampling spots. The negative ion concentration of SO4^2- in the reservoir is the highest, then Cl^- ;Ca and Mg have the highest concentrations in alkali metals. The results suggest that precipitation enhancement does not affect the water quality of Miyun Reservoir.
出处
《气象科技》
2008年第4期468-473,共6页
Meteorological Science and Technology
基金
国家科学技术委员会项目"人工增雨技术研究及示范"(2001BA610A-06-03)资助
关键词
人工增雨
水库水质
变化特征
precipitation enhancement, reservoir water quality, variation characteristics
