Seasonal ice zoneBy Samantha Lake / 18/04/2024 ALL0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ« Back to Glossary IndexAn area of ocean that extends from the permanent ice zone to the boundary where winter sea ice extent is at a maximum; here, sea ice is present only part of the year; this zone primarily consists of first- year ice. Related Articles: Glossary: Marginal ice zone« Back to Glossary Index