Also called a shore platform, a wave-cut notch is a narrow flat area that is normally found at the base of a sea cliff or the shoreline of a sea, lake or bay. It forms by the action of waves hitting against the face of the cliff. Wave-cut notches are mostly obvious during low tides when they become visible as huge, flat rocks.Continue Reading
Wave-cut notches are only identified when sand is moved by a storm or during low tide periods. They are formed as waves hit a cliff between the high and low tide lines. Eventually the notches grow to become caves, then are undermined by continuing wave action until the cliff collapses. Once the cliff is the same level as the beach, it becomes less possible for the sea to continue eroding the remaining rock. Given the right conditions, the continuous landward retreat and erosion of the cliff results in a flat, wide rock that looks as if the rock’s foundation has been exposed.
Wave-cut notches sometimes provide evidence about sea levels in the past. When researchers find these raised surfaces behind present-day beaches, they provide evidence of higher sea levels that existed in the geological past. Through studying fossils found in the platform or through scientific dating methods, geologists and geographers can often determine when the platform was formed.Learn more about Erosion & Weathering
Wave refraction at a shoreline occurs when a wave approaches the shoreline at a straight angle, and the wave crest over the shallower part of the water moves slower than the wave crest over the deeper water. The wave refracts, or bends, because the depth beneath the crest varies. The wave crest over the deeper water eventually meets the crest over the shallower water, making it parallel to the shore.Full Answer >
A door rebate is an alternate British term for a rabbet, a deep groove or notch cut into the edge of building material such as wood. The groove allows a tight fit with other objects that are placed against or into the material.Full Answer >
A high or low tide occurs based on where the highest or lowest part of the wave hits the shore. A high tide reaches further up on the shore than a low tide. Most coastal regions experience two high tides and two low tides every 24 hours and 50 minutes.Full Answer >
Foss Lake, the largest body of water in Oklahoma, has an 8,800-acre surface area, a 63-mile shoreline and lies just north of Foss and west of Clinton. The lake was constructed after the Washita River was dammed in 1958 to create a water storage area.Full Answer >