besides,the large tidal range with a mean value of 4 m is responsible for the alternate wetting and drying of shoals and submerged rocks during the flood and ebb,respectively.

• 另外,计算得到的泉州湾内平均潮差约为4m,如此大的潮差是导致湾内浅滩和暗礁在落潮时干出、涨潮时重新被漫过的根本原因。