Longshore current
From Coastal Wiki
Definition of Longshore current / Nearshore current:
The longshore current is the dominating current in the nearshore zone, it is running parallel to the shore. The longshore current is generated by the shore-parallel component of the stresses associated with the breaking process for obliquely incoming waves, the so-called radiation stresses, and by the surplus water which is carried across the breaker-zone towards the coastline.
This is the common definition for Longshore current / Nearshore current, other definitions can be discussed in the article
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