Studies on water movements and sediments in Southern Lake Michigan : part 1[-3] ... / by John C. Ayers.

origin at least temporarily decided upon. A similar area
off Milwaukee has been found.
A survey of the sediments of Milwaukee Embayment has
been carried out with the discovery of pronounced eutrophic
changes in sediment characteristics within Milwaukee Harbor.
These are reported in preliminary form.
Two portions of the work originally proposed could not
be carried out.
1. A magnetometer could not be obtained, and the
planned start on the determination of the magnetic
anomalies of the southern basin of Lake Michigan
could not be carried out.
2. Despite our best efforts we were unable to devise
a current drogue that could be found after long
periods and which still had so little windage effect
that it would stay within the water-mass in which it
was set. Consequently we were unable to achieve a
study of the attrition of water masses.
Survey of the substructure of the basin of lower Lake
Michigan by the sparking sub-bottom profiler was deliberately
abandoned because the reduced ship-speed that it required
would have used excessive amounts of ship-time. To have obtained even an incomplete sparker survey would have prevented
the completion of the bottom sediment survey reported in
Part II of this — Final Report.

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