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Channel Siltation Determined with Side-Scan Radar

by Gregory L. Hartman, Chf.; Dredging Operations Sect., Portland Dist., Corps of Engrs., Portland, Ore.,


Serial Information: Civil Engineering—ASCE, 1977, Vol. 47, Issue 6, Pg. 71-73


Document Type: Feature article

Abstract:

Of the new electronic means to measure water depth, side-scan sonar is unusual in that it gives not just a cross-section of the bottom but a semi-3-D picture of the bottom surface. Experienced analysts can identify small-scale features like ripples and exposed rock, and sometimes even the type of bottom sediments. Technique can be used productively in conjunction with core borings, one to survey broad areas, the other to get detailed information at selected spots. Sediment transport, and dredging activity can be monitored by this technique. A case history of use of the technique at Coos Bay, Ore., is given.

Subject Headings: Sediment transport | Case studies | Soil water | Silt | Sediment | Rocks | Radar

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