This data set consists of upward looking sonar sea ice draft data collected by submarines in the Arctic Ocean.
It includes data from both U.S. Navy and Royal Navy submarines. Data are provided as ice draft profiles and as statistics derived from the profile data. Statistics files include information concerning ice draft characteristics, keels, level ice, leads, un-deformed and deformed ice.
Use constraint: These data are freely, openly, and fully available to use without restrictions, provided that you cite the data according to the recommended citation at https://nsidc.org/about/use_copyright.html.
Metadata update history
1998-01-01T13:00:00Z : Created : Made by transformation from DIF record
2023-06-28T14:00:00Z : Minor modification : Made by transformation from DIF record, type is hardcoded.