S-Cool Revision Summary

S-Cool Revision Summary

Deltas 3-dimensional features found where rivers that contain much sediment flow into the sea; velocity is reduced and deposition of material occurs.
Estuaries Where fresh water (rivers) and salt water (sea) interact.
Accurate estuary Rounded, convex edges.
Cuspate estuary Material evenly spread from the river.
Birds foot estuary Spread over a wide area with many 'distributaries' extending out to sea.
Bottom set bed Have finest material, carried furthest in suspension and sinks to sea bed.
Foreset bed More readily deposited, coarser material. Builds out to sea.
"top"set bed Deposits from river with the most coarse material.
Negative change A fall in sea level in relation to the land.
Positive change Sea level rises in relation to the land (or land sinking in relation to the sea).
Isostatic change Local changes in sea level, due to ice weight depressing earth’s crust lying beneath it.
Eustatic change Large scale/worldwide changes.
Rias Drowned river valleys.
Fjords Flooded U-shaped valleys.
Fjards Glaciated lowland areas that have since been flooded.
Raised beaches Landforms that occur due to isolated uplift of the land in comparison to the sea, as the weight of ice is slowly removed.
Hard engineering Structures that try to limit the impact on waves and their energy on a stretch of coastline.
Soft engineering More environmentally friendly - tries to work with natural processes to reduce, rather than prevent erosion.
Managed retreat Nature is allowed to take its course. Sometimes seen as the ‘do nothing’ approach.