A 15-day current record was obtained from a 25-m depth on the Beaufort Sea shelf approximately 83 km northeast of Barrow, Alaska, during August 1972. This is one of the longest continuous current records for the shelf area. The current observed at 25 m showed a mean flow to the east but was subject to irregularities and wide day-to-day variations. The local wind, although the major cause of many of the fluctuations, is not the primary driving force of the eastward flow. The eastward motion of the current appears to be dominated by the mometnum present in the flow prior to its entry into the shelf region. There was an intensification of the current during prevailing westerly winds and a suppression of the current during sustained easterly winds. A change in wind direction (to easterly wind) such as occurred from August 13 to 19 was not sufficient to cause current reversal even though the east wind lasted for more than 6 days. |