摘要
根据2006年12月至2007年10月对天津近岸(38°37′03.8″N～39°12′13.9″N,117°33′14.8″E～118°02′50.1″E)海水的现场调查,初步分析该海域溶解氧的时空变化特征及主要影响因素.结果显示:调查海域溶解氧含量在3.93～11.34 mg/L之间,平均值为(8.00±1.99)mg/L,表层高于底层,且存在冬季>春季>秋季>夏季的变化规律;浅水区水体溶解氧含量变化幅度大,而深水区相对稳定,近岸浅水区水环境的影响因素复杂且具有多变性;该海区溶解氧含量主要受温度的影响,且和温度、pH均存在显著的线性相关性.
Several cruises were carried out from December 2006 to October 2007 in Tianjin offshore, covering an area from 38°37＇03.8＂N to 39±12＇13.9＂N and 117°33＇14.8＂E to 118°02＇50.1＂E,with the purpose of making primary study on the spatio-temporal distributions and the main influence factors of the dissolved oxygen （DO）. The inquisitional data showed that DO concentration varied from 3.93 mg/L to 11.34 mg/L,the mean being （8.00 ± 1.99）mg/L. The vertical distribution of DO was in a decreasing trend from the surface to bottom layer,and it in a increasing trend in four seasons winter〉spring〉autumn〉summer. DO concentration had a big change in the shallow water,while it is comparatively steady in the deep water. In the shallow water of offshore ,the environment took levities and had many complex influence factors. The DO concentration in the study area, significantly influenced by the temperature, had an apparent linear relationship with temperature and pH.
出处
《天津科技大学学报》
CAS
2009年第3期26-30,共5页
Journal of Tianjin University of Science & Technology
基金
天津市908专项近岸海域海洋化学调查(908-TJ-09)
关键词
天津近岸
海水
溶解氧
分布特征
Tianjinoffshore
seawater
dissolved oxygen
distribution feature
