Upper shoreface refers to the portion of the seafloor that is shallow enough to be agitated by everyday wave action, the wave base. [1]
Below that is the lower shoreface.
- ^ R. G. Dean and R. A. Dalrymple (1991). Water wave mechanics for engineers and scientists. Advanced Series on Ocean Engineering. Vol. 2. World Scientific, Singapore. ISBN 978-981-02-0420-4.