John Hughes Clarke Delivers Talk Entitled "Imaging Water Mass Variability in Coastal Environments"
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."
Ocean Mapping Group, University of New Brunswick
in this issue:
African Sahel Dust
Radio Interview Explores African Dust
Florida Coastal Storm Defenses
Oceans Day 2002
Black History Month
Environmental Academy Web Site
Regional Science Fair
Congressional BriefingSea Otter Research
Law of the Sea
Bill Dillon Retires
John Hughes Clarke"Imaging Water Mass Variability"
March Publications List