What is the disadvantage of using drift bottles to study currents?
a. They must be continuously monitored by radar.
b. They are not successful for determining coastal circulations.
c. The intermediate movements of the bottles are unknown.
d. They are frequently lost.
ANS: C
The precise track of movement can be determined by using buoy arrangements. Drift bottles and cards
are very useful in determining coastal circulation patterns. Information can be found in the section
Studying Currents
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