Assessment of Sand and Gravel Resources along the Inner Continental Shelf of Maine

Methods

In the summer of 2003, we collected multibeam and side-scan sonar data simultaneously in outer Saco Bay (Figure 2 and Figure 3). Owing to budget constraints, we could not afford to extend the multibeam coverage to all areas evaluated with side-scan sonar and seismic reflection profiles.

Figure 2

Figure 3

We used a digital Edgetech side-scan sonar towfish with a topside Triton-Elics data processor. The range imaged varied between 100 m and 200 m. Multibeam bathymetric data were gathered with a Simrad SM 2000 system. Water profiles were evaluated every hour, and all data was processed with the Triton-Elics data processor. In all, 115 km of seismic reflection tracklines were gathered, and 180 km of side-scan sonar tracklines, ensonifying an area of 45 km².

Seventeen vibracores were gathered between 36 m and 78.5 m depth in the summer of 2004 with a Rossfelder Underwater P3 Vibracorer (16 cores were between 54 m and 78.5 m depth) (Figure 3). All cores were brought back to the sedimentology lab at the University of Maine for description and analyses.

Introduction Previous Studies Geologic Setting Methods Results Discussion References Appendix

Last updated on October 30, 2006

Contents

Assessment of Sand and Gravel Resources along the Inner Continental Shelf of Maine

Methods