基于浮标观测的2019年风暴潮“利奇马”对唐山近岸海域水质影响分析  

Analysis on water quality changes of buoys in Tangshan coastal waters after a storm surge"Lekima"in 2019

作　　者：王久良 李志勇 刘德武 李跃 李岩松 刘朋飞 李佳骏 王秋妍 WANG Jiuliang;LI Zhiyong;LIU Dewu;LI Yue;LI Yansong;LIU Pengfei;LI Jiajun;WANG Qiuyan(The Fifth Geological Brigade of Hebei Bureau of Geology and Mineral Resources Exploration,Tangshan 063000,China;Hebei Marine Geological Environment Survey,Tangshan 06300,China;Natural Resources and Planning Bureau of Tangshan,Tangshan 063000,China)

机构地区：[1]河北省地质矿产勘查开发局第五地质大队,河北唐山063000 [2]河北省海洋地质环境调查中心,河北唐山063000 [3]唐山市自然资源和规划局,河北唐山063000

出　　处：《海洋湖沼通报（中英文）》2024年第5期73-79,共7页Transactions of Oceanology and Limnology

基　　金：唐山市海洋环境监测网建设项目专项资金项目(20165101)。

摘　　要：2019年8月受风暴潮“利奇马”影响期间,唐山沿海出现持续强降雨,根据唐山市近岸海域2个浮标站位对风暴潮前后观测数据进行分析发现:2个浮标观测海域水温均下降3.0℃左右,浊度日均值最高达38.6、50.3 ntu,为风暴潮前3.17、12.89倍;同时pH、叶绿素a、溶解氧、盐度均有小幅波动,且浮标2#海域水质波动幅度均高于浮标1#海域,pH、叶绿素a、溶解氧日均值最高达8.25、2.882 ug/L、7.7 mg/L,盐度日均最低值为23.96。数据表明:风暴潮期间持续强降雨带来了大量陆源物质及强风浪导致水体垂直混合加剧,底层物质上升的双重因素,导致观测海域风暴潮前后水质参数不同幅度变化。In August 2019,affected by storm surge Lekima,there was a sustained heavy rain in Tangs-han coastal area.The monitoring data of two buoy stations in the coastal water before and after the storm surge were analyzed.It was found that the daily average of water temperature decreased by 3℃C approximately,and the highest daily average of turbidity reached 38.6 ntu and 50.3 ntu,3.17 times and 12.89 times of those before the storm surge.At the same time,pH,chlorophyll-a and dissolved oxy-gen as well as salinity all showed small fluctuations,while the fluctuation range of water quality in the buoy station 2#was higher than that in buoy station 1#.The highest daily average of pH,chloro-phyll-a and dissolved oxygen in buoy station 2#reached 8.25,2.882 ug/1 and 7.7 mg/1,respectively,and the daily average of salinity decreased to 23.96%as the lowest.The results showed that during the storm surge,the continuous heavy rainfall brought a large amount of land sourced materials and strong wind waves,which led to the intensification of vertical mixing of water bodies and the rise of bottom layer materials,resulting in different amplitude changes of water quality parameters before and after the storm surge in the observed sea area.

关 键 词：风暴潮 近岸海域 浮标 水质 

分 类 号：P76[天文地球—海洋科学]