First-Year Ice 2 : Sea ice that is less than one year old. Typically, first-year ice has a salinity of 4 to 6 ppt; however, fresh-water ice may be found near some river deltas. (Bul 2N)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}