The Alexander Agassiz Medal is awarded every three years by the U.S. National Academy of Sciences for an original contribution in the science of oceanography. It was established in 1911 by Sir John Murray in honor of his friend, the scientist Alexander Agassiz.
Source: National Academy of Sciences
The information in the table is according to the Alexander Agassiz Medal web page at the official website of the National Academy of Sciences unless otherwise specified by additional citations.