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（及进港航道）是一处经冰川侵蚀雕琢、以潮汐作用为主导的河口湾，坐落于马萨诸塞湾西部。该港兼具径流量偏低与人类活动影响显著两大特征，是新英格兰海岸沿线诸多海湾与河口湾的典型范例。覆盖马萨诸塞湾及港域进港航道床底的砂与砾石，均为残留冰川沉积物；然而在水动力条件较弱的区域，细粒沉积物正持续淤积。