South Carolina Coastal Erosion Study

Figure 3. Sidescan-sonar data collected offshore of Myrtle Beach, SC, 1999 - 2003. High-backscatter is represented as light tones within the image, low-backscatter is represented by dark tones. Surficial grab samples and video show areas of low-backscatter to be characterized by fine-medium sand, silt, and mud. Areas of high-backscatter are shown to be characterized by coarse sand, shell hash, outcropping strata, and gravel. PDF Version Figure 3