天津近岸海水悬浮物的分布特征

Distribution Feature of Total Suspended Matter in Sea Water in Tianjin Offshore

根据2006年12月至2007年10月间对天津近岸海水(38°37′03.8″N^39°12′13.9″N,117°33′14.8″E^118°02′50.1″E)的调查,分析了该海域悬浮物的分布特征及影响因素。调查结果显示:该海域悬浮物含量在0.6mg/L^241.8mg/L之间;表层低于底层,近岸高于远岸;且存在冬季(春季(秋季(夏季的分布规律。调查区中部低值区经历了诞生→发育→收缩→消失的生命历程;高值区位于临港工业区附近。季节的气温差异、风速、海浪、潮流等是造成这种分布的主要原因。

Based on the results of several surveys in Tianjin offshore from December 2006 to October 2007, the researches were primarily made on the variation of the spatial distribution and the main influenced factors of the total suspended matter （SPM）, 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. The results of SPM concentration, varying from 0.6mg/L to 241.8mg/L, showed that there was an increasing trend distribution from the surface to bottom layer, that a decreasing tread from offshore to open sea, that an increasing trend in four seasons was winter 〉 spring 〉 autumn 〉 summer. The SPM - minimum zone, located on the middle part of the investigated area, experienced the process of naissance→growth→shrinkage→ disappearance, while the SPM -maximum zone was near of THIP（Tianjin Harbor Industrial Park）. Seasonal temperature variation, wind speed, wave, tide were the main factors which led to such kind of distribution.