What is the term for a cross-section of a beach?

The term "beach profile" refers to the specific cross-section of a beach that illustrates the shape and features of the beach as it transitions from the shoreline into the water and inland towards the dunes or backshore area. This profile typically includes measurements of the slope and elevation at various points along the beach and provides essential insights into processes such as erosion, sediment deposition, and the impact of wave action. Understanding the beach profile is crucial for coastal management, as it helps in assessing the health of the beach, predicting changes due to natural forces, and implementing strategies for protection and preservation.

The other options do not accurately describe a cross-section of a beach. A geological survey involves studying the composition and structure of a larger area, which is broader than just a beach profile. Coastal outline might refer to a general shape of the coastline, but does not specifically provide the detail of a beach cross-section. Shoreline mapping focuses on documenting the position and features of the shoreline itself, rather than the vertical cross-section of the beach.