What is an Embayed coastline?
Embayed, or headland bay, beaches make up a large proportion of all coastal landforms [Short and Masselink, 1999]. They are defined by the presence of one or two natural or artificial impermeable boundaries that cast a degree of curvature on the beach planform.
What are the three main types of shoreline?
Such a classification leads to the definition of three general tectonic types of coasts: (1) collision coasts, (2) trailing-edge coasts, and (3) marginal sea coasts.
What is shoreline deposition?
Deposition along the shore is the result of the longshore drift, which is a process by which sand and sediment is transported along the coast. Deposition of sand and sediment create shoreline features, such as a spit, which is an elongated landform that extends from the coast into the mouth of an adjacent bay.
What is a shoreline called?
The coast, also known as the coastline or seashore, is defined as the area where land meets the ocean, or as a line that forms the boundary between the land and the ocean or a lake.
What is a low energy coastline?
Low-energy coasts are coasts sheltered from storms and swells by adjacent topographical features (barrier island, reef, embayment, shoal, headland), by their position with respect to prevailing wind direction, by their position in a climatic belt, by gentle offshore topography, or by a combination of these factors.
What are the two types of shorelines?
Shorelines are divided into five primary zones—offshore, nearshore, surf, foreshore, and backshore. The offshore zone is below water, but it is still geologically active due to flows of turbidity currents that cascade over the continental slope and accumulate in the continental rise.
What are shoreline features?
Shore platform, sea cave, sea arch, and sea stack. Shore Platform. A narrow flat area often found at the base of a sea cliff or along the shoreline of a lake, bay, or sea. Created by the action of waves.
What causes shoreline erosion?
Coastal erosion may be caused by hydraulic action, abrasion, impact and corrosion by wind and water, and other forces, natural or unnatural. Softer areas become eroded much faster than harder ones, which typically result in landforms such as tunnels, bridges, columns, and pillars.
What causes a depositional shoreline?
Waves carry many materials, such as sand, shells, and small rocks. When the waves deposit these materials on the shoreline, a beach forms. A beach is any area of shoreline that is made of material deposited by waves. Some beach material is deposited by rivers and moves down the shoreline by the action of waves.
What is a shoreline in geography?
A shore or a shoreline is the fringe of land at the edge of a large body of water, such as an ocean, sea, or lake. Shores are influenced by the topography of the surrounding landscape, as well as by water induced erosion, such as waves.
What’s a high energy coastline?
High-energy coasts are those that are exposed to strong, steady, zonal winds and fronts with high wave energies in the lee of highlatitude storm waves and low latitude swells (Davies, 1973), unprotected by shallow offshore topography, and receive the highest energy.
What are the characteristics of a high energy coastline?
What are high energy coasts?
- waves are powerful (for a significant part of the year)
- the rate of erosion exceeds the rate of deposition.
- characteristic landforms include headlands, cliffs and wave-cut platforms.
