The M2 Tide in the Beaufort and Chukchi Seas

Abstract

The amplitude and phase of the M2 tide for the Beaufort and Chukchi Seas were derived from the vertically integrated equations of motion and continuity. The boundary conditions at the open boundaries were taken both from previous numerical models and observations. The results are shown as co-tidal and co-range lines and a distribution of current ellipses. The results are compared with the few available measurements. Co-tidal and co-range lines support the existence of amphidromes at the entrance to the Amundsen Gulf and in the Chukchi Sea. The former amphidrome has been confirmed by Canadian observers. It is believed that the latter amphidrome is reported for the first time.