Figure 6. Detailed side scan sonar image of rock and gravel. The linear acoustic noise to either side of the center trackline was caused by ship heave in rough seas. Lighter tones represent "soft" returns from mud; darker tones are "harder" returns from rock, sand and gravel. Side-scan image is located in Figure 2.

---

Last updated on October 26, 2006

Maine.gov | Department of Conservation | Bureau Home | Site Policies