Sea Floor Image Maps Showing Topography, Sun-Illuminated Topography, Backscatter Intensity, Ruggedness, Slope, and the Distribution of Boulder Ridges and Bedrock Outcrops in the Stellwagen Bank National Marine Sanctuary Region off Boston, Massachusetts

U.S. Geological Survey Scientific Investigations Map 2840

Page C. Valentine, editor

Map C. — Backscatter Intensity and Sun-Illuminated Sea Floor Topography in the Stellwagen Bank National Marine Sanctuary Region

By Page C. Valentine, Tanya S. Unger, and Jessica L. Baker

2005

Backscatter intensity index. Interpretation of seabed type applies best in areas of low topographic relief.