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Use of Various Sonar Methods to Support Underwater ...

PostPosted: Tue Dec 14, 2010 10:14 am
by scott_bentley
Use of Various Sonar Methods to Support Underwater Investigations

Mark I. Klein, Manager of Field Services, S.T. Hudson Engineers Inc.

Remote sensing tools have significantly improved the effectiveness of Divers and Marine Contractors to document underwater conditions and communicate to clients. Digital images easily provide real time information for field personnel, and help improve safety of all concerned.

Several samples of sonar use are provided. In general two main types discussed are Side Scan, and Scanning Sonar. Each use the same general principals of sonar to image conditions underwater. Their basic difference is the method that they use to collect data. Both methods provide digital images that not only communicate conditions, but can be scaled to provide quantities and accurate measurements.

Over the past several years, we have used both methods with numerous contractors. Repeated use on projects ranging from siltation studies for power plant intakes, to debris removal at ship berths have become a major asset to field personnel. Divers now typically request verification of conditions using sonar, especially in low visibility and strong current conditions. Improvements in this technology have made this a critical tool for working in dangerous environments.

Sample images and project descriptions will be provided.

Bio and Image

PostPosted: Tue Jan 18, 2011 12:31 pm
by scott_bentley
Mr. Klein is responsible for all diver-inspection and hydrographic survey work at Hudson. He has over 30 years' experience in marine surveying work, including diving, remote sensing, underwater engineering inspection, condition surveys and construction supervision, on all type of marine structures.

He has extensive marine structural experience in bridge pier scour analysis, marine salvage operations, and many types of underwater construction operations including pile jacketing and inspection techniques.

He has been instrumental in developing remote sensing surveys for numerous industrial applications including monitoring and evaluation of power plant and marine navigational issues using side scan sonar, scanning sonar, magnetometer and remotely operated vehicles.