Boston Harbor and approaches samples (WILLETT72 shapefile

Boston Harbor (and its approaches) is a glacially carved, tidally dominated estuary in western Massachusetts Bay. Characterized by low river discharge and significant human impact, the harbor is typical of many bays and estuaries along the New England coast. The sands and gravels that floor Massachusetts Bay and the Harbor approaches are relict glacial sediments. However, fine-grained sediments are accumulating in areas of lower energy.

波士顿港（及其邻近水域）为坐落于马萨诸塞湾西部的冰川侵蚀型潮汐主控河口湾。该水域以径流量偏低且受人类活动显著影响为特征，与新英格兰沿岸的多数海湾及河口湾具有典型共性。覆盖马萨诸塞湾及该港邻近水域床底的砂与砾石，均属于残留冰川沉积物。但细粒沉积物正于水动力条件较弱的区域不断堆积。