noun
morning tide
Refers to the rising tide in the morning. A straightforward compound of 朝 (morning) and 潮 (tide).
朝潮が満ちてきた。
The morning tide has come in.
夕潮 means 'evening tide', contrasting with 朝潮's 'morning tide'.
Compound of 朝 (あさ, 'morning') and 潮 (しお, 'tide').