1. Bathymetric map of Alsek sediment instability area, northeastern Gulf of Alaska [cartographic material] Yale Public content 1984. 2002-06-01T04:00:00Z. 2023-08-10T03:04:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. Alaska, Alaska, Gulf of, and Alaska, Gulf of (Alaska).