(Woods Hole Oceanographic Institution, 1983-07)
Berteaux, Henri O.; Walden, Robert G.; Clay, Peter R.; McDevitt, R. E.
This report is the last of a series of three reports on a comprehensive
study of CTD instrument lowering mechanics. The first
report, WHOI 79-81, "A Study of CTD Cables and Lowering Systems",
examines the causes and modes of lowering cable failures, both mechanical
and electrical, and makes recommendations to improve existing instrument
packages and lowering procedures. The second report, WHOI 81-76,
"Hydrodynamics of CTD Instrument Packages", is a theoretical study of
instrument package stability when cable lowered or free falling. The
model is used to predict the hydrodynamic response of CTD packages in
their present or improved configuration. This report, WHOI 83-21, is
more factual. It describes the tests performed on scale models and
actual CTD packages to actually observe and/or measure their hydrodynamic
behavior. Analytical results and experimental data obtained in this
study are used to draw recommendations for CTD package improvement and
future lowering procedures.
