A river delta extends into a shallow sea; which outcome occurs when sediment supply decreases while wave energy and longshore drift remain constant?

💡 Explanation

A decrease in sediment supply, coupled with constant wave energy and longshore drift, causes coastal erosion because the balance between deposition and removal shifts towards removal. Therefore, the delta shoreline retreats significantly, rather than advancing or remaining stable.

• What causes surface currents to reverse in the southern Pacific Ocean during an El Niño event?
• A persistent northerly wind blows along the west coast of a continent. Which consequence follows?
• What causes higher stream velocity near river levees?
• What happens to the eruption style when magma density decreases significantly during a volcanic event?
• If silver nanoparticles are ingested by zooplankton at the base of a freshwater food web, which consequence affecting higher trophic levels is most likely?
• If a forest containing high species richness is fragmented by road construction, which consequence follows?