#coastal geology
- Sand expanse — An extensive accumulation of sand, a sandy beach, or a desert area covered with dunes; an unconsolidated granular sedimentary deposit formed by rock disintegration under climatic actions. In an international geographical and tourism context (originating from Spanish), the term designates coastal regions, seaside resorts, or volcanic areas structurally characterized by the massive presence of sand fields or fine volcanic ash.
- Backshore — The part of the beach lying between the berm crest and the coastline, cliff, or sand dunes, located above the mean high-water line of normal tides. This structural sector is submerged exclusively during exceptional storms or extraordinary spring tides, being characterized by dry sand accumulations and specific salinity-resistant coastal vegetation.