6-m resolution image of shaded relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 1, pseudo-colored by backscatter intensity (Q1_BACKPC.TIF)

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea...美国地质调查局（U.S. Geological Survey）已开展地质填图工作，以表征马萨诸塞州（Massachusetts）近海的海底特征。本次填图采用西姆拉德水下（Simrad Subsea）设备开展作业。