钦州湾潮流特征分析

根据1994年5月和11—12月两个航次的调查及近年有关海湾的海流观测资料，分析了钦州湾的潮流特征，观测资料来自分布于该海湾东中西三个航道及相关区域的8个测站。钦州湾涨落潮流特征：落潮流速大于涨潮流速：东部最大涨落潮流速小于西部：夏季落潮流总是大于冬季：龙门水道附近的流速最大，而其余区域的流速相对较小。外湾(钦州湾)余流，是气旋式环流：水体东进而西出。从湾内来的泥沙和污染物质，主要从西部进入外海；中、东槽是主要“进水”通道，外海低泥沙含量、少污染物质的清洁水从这里潮流而上。因此，与西部相比，东部盐度高，水质清洁，底质重金属含量少。

Analysis of Tidal Current Characteristics in Qinzhou Bay

:The information obtained from the two investigations of May and November to December 1994 and the observations from eight observatories located in the east, middle and west channels and relevant areas are used to analyze the characteristics of tidal currents in the Qingzhou Bay. The tidal current characteristics are as follows. The velocities of ebb tidal current are larger than flood current. The current velocities in the east part are lower than those in the west part. Ebb tidal current velocities in summer are always larger than those in winter. Current velocities in Long- men Channel is largest. Residual current circulation is a cyclonic circulation. The residual current in the east part gets into the bay, and goes out of the bay in the west part. The water coming from outside the bay in the east part is cleaner than that in the west. Comparied with the water in the west, the water in the east has higher salinity, less pollutant matters and less heavy metals in the bottom mud.