noun
physical oceanography
Academic field studying physical properties and processes of the ocean, such as currents, waves, and temperature.
彼は大学で海洋物理学を専攻している。
He is majoring in physical oceanography at university.
Oceanography in general, including biological and chemical aspects; 海洋物理学 is specifically the physical branch.
Compound of 海洋 (ocean) + 物理学 (physics).