Chum Salmon Otolith Data from the 2019 Gulf of Alaska International Year of the Salmon Expedition

Chum salmon otoliths were collected from salmon in the Northeast Pacific Ocean and analyzed for information about age and growth. These data were collected as part of the International Year of the Salmon (IYS) Gulf of Alaska High Seas Expedition conducted in February and March 2019, to further improve the understanding of factors impacting salmon early marine winter survival. Otolith thermal marks were also examined to help determine stock origin.