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John Hughes Clarke Delivers Talk Entitled "Imaging Water Mass Variability in Coastal Environments"

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John Hughes Clarke, from the University of New Brunswick, Canada, visited the Woods Hole Field Center and gave a talk entitled "Imaging Water Mass Variability in Coastal Environments" at the Woods Hole Oceanographic Institution on January 30. John provided the following abstract to describe his presentation:

"As marine surveyors increasingly switch to wide-swath multibeam sonar systems, so their sensitivity to local changes in the sound-speed field is increasing. To maintain bathymetric accuracy levels at the decimeter scale (now required for precise monitoring of seabed change), they need a far greater understanding of the medium they work in. Previously water-mass sampling at time scales of hours and length scales of tens of kilometers was acceptable, but they now require minutes and hundreds of meters.

"This demand is almost equivalent to having a complete understanding of the local oceanographic variability. We will show the scale of the problem, current methods of addressing it, and our most recent results from multifrequency acoustics used to image the location and timing of rapid water-mass changes."

Related Web Sites
John E. Hughes Clarke
Ocean Mapping Group, University of New Brunswick

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African Sahel Dust

Outreach Aleutians Documentary

Radio Interview Explores African Dust

Florida Coastal Storm Defenses

Crystal Demonstration

Oceans Day 2002

Home-Schooled Tour

Black History Month

Environmental Academy Web Site

Regional Science Fair

Meetings Fishing Symposium

Congressional Briefing—Sea Otter Research

Contracting Meeting

Lake Mead

SEABED Technology

Law of the Sea

Awards Recycling Program

Staff & Center News Bill Dillon Retires

John Hughes Clarke—"Imaging Water Mass Variability"

Deltas Seminar

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