基于浮标观测的2019年暴雨过后秦皇岛近岸海域水质参数变化分析  

Changes of water quality parameters of buoys in Qinhuangdao sea area after a rainstorm in 2019

作　　者：毕玉明 马方方 江田田 陈作艺 周秋伶 桓清柳 刘会欣[2] BI Yu-ming;MA Fang-fang;JIANG Tian-tian;CHEN Zuo-yi;ZHOU Qiu-ling;HUAN Qing-liu;LIU Hui-xin(Shenzhen Lightsun Technology Corp.,Ltd.,Shenzhen 518029,China;Qinhuangdao Mineral Resource and Hydrogeological Brigade,Hebei Geological Prospecting Bureau,Qinhuangdao,Hebei 066000,China)

机构地区：[1]深圳市朗诚科技股份有限公司,广东深圳518029 [2]河北省地矿局第八地质大队,河北秦皇岛066000

出　　处：《海洋湖沼通报》2022年第1期60-66,共7页Transactions of Oceanology and Limnology

基　　金：北京市自然科学基金资助项目(No.8194059);国家重点研发计划“海洋环境安全保障”重点专项2019YFC1407905;秦皇岛市科学技术研究与发展计划[201701B050]。

摘　　要：2019年8月11—12日,受台风"利奇马"影响,秦皇岛海域出现大暴雨,根据浮标监测数据,8月11日和12日降雨量最高分别达到110.6 mm和138 mm。对大暴雨前后近岸海域的浮标数据变化进行了分析,大暴雨过后,位于浅海湾、人造河口和七里海盐度日均值最低降至25.7,三个海域无机氮日均值最高达到0.433、0.327、0.202 mg/L,为大暴雨前的5.7倍、9.6倍和12.7倍;人造河口和七里海磷酸盐日均值分别为0.039 mg/L和0.035 mg/L,为前期均值的3.5倍和5.0倍。大暴雨过后4 d,三个浮标叶绿素a、溶解氧陆续开始升高,七里海浮标叶绿素a升高幅度最大,日均值最高达到13.9μg/L;大暴雨带来的大量氮、磷为藻类增殖提供了充足的营养基础。From Aug. 11 to 12, 2019, affected by typhoon Lekima, there was a heavy rain in Qinhuangdao sea area. According to the buoy monitoring data, the highest rainfall on Aug. 11 and 12 was 110.6 mm and 138 mm, respectively. The change of buoy data in the coastal area before and after the heavy rain was analyzed. After the rain, the daily average of salinity in Qianhai Bay decreased to 25.7 as the lowest, and the daily average of water temperature decreased by 3℃, approximately. The highest daily average of inorganic nitrogen in the three sea areas reached 0.433 mg/L, 0.327 mg/L and 0.202 mg/L, 5.7, 9.6 and 12.7 times of that before the heavy rain. The highest daily average of phosphate in Renzao Estuary and Qilihai was 0.039 mg/L and 0.035 mg/L, respectively, 3.5 and 5.0 times of those before raining. Four days after the rainstorm, chlorophyll a and dissolved oxygen of the three buoys began to increase, and the maximum daily average of chlorophyll a reached 13.9 μg/L. The large amounts of nitrogen and phosphorus caused by the heavy rain provided an adequate nutritional basis for algal proliferation.

关 键 词：大暴雨 浮标 陆源污染物 水质 

分 类 号：P714[天文地球—海洋科学]