Although the presence of Langmuir circulation (LC) cells is evident from ob
servations in lakes, ponds, and coastal waters, the effects of these cells
on oil slicks have received less attention. This paper considers the effect
s as inferred from field data of LC cells on oil slicks. Examples from obse
rved experimental oil slicks in the field are presented. The importance of
these LC cells is discussed from the point of view of oil spill contingency
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