Aleutian Depression

Aleutian Depression

 

a region of low atmospheric pressure in the North Pacific near the Aleutian Islands; one of the centers of atmospheric activity. The Aleutian depression is recorded on long-range mean charts. In January the pressure in the center of the Aleutian depression is less than 1,000 millibars. In the summer the Aleutian depression dissipates almost completely and becomes absorbed in the interior regions of the” polar basin. This phenomenon is associated with the frequent incursion and deepening of central cyclones in this region of the ocean; the recurrence of anticyclones in this region is relatively rare. The Icelandic depression in the North Atlantic is analogous to the Aleutian depression.