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| A natural inlet maintained by tidal currents. |
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| The difference between the mean high-water volume and the mean low-water volume of an estuary. |
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| when the barrier is cut forming a channel. The most common mechanism in which tidal inlets form today. |
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| a landward shallowing channel that slopes upward toward the intertidal portion of the delta. Dominated by strong flood tidal currents and landward sand transport in the form of landward oriented sandwaves. |
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| when a flood ramp splits in 2, dominated by flood-tidal currents and flood-oriented sand waves - the place where sand is delivered to the flood delta. |
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| the highest and landwardmost part of the flood delta, may be partially covered by marsh vegetation |
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| extend from the ebb spit toward the inlet.form from sand that is extended from the ebb-shield and transported back toward the inlet by ebb-tidal currents |
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| lobes of sand that form where the ebb currents have breached through the ebb splits or ebb shield, depositing sand in the interior of the delta. |
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| accumulations of sand that have been deposited by the ebb-tidal currents and that has been subsequently modified by waves and tidal currents. they exhibit a variety of forms dependent on the relative magnitude of wave and tidal energy of the region as well as geological controls. |
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| seaward-shallowing channel that is scoured in the ebb-tidal delta sands, dominated by ebb tidal currents |
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sediment transported out through the maine ebb channel is deposited in a lobe of sand forming in terminal lobe.
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| broad shallow sand platform located on both sides of the main ebb channel. |
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| waves breaking over the terminal lobe and across the sawsh platform from arcuate-shaped swash bars that migrate on shore, usually 50-150 m long, 50 m wide, 1-2 m in height |
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| the presence or absence, size, and development of flood tidal deltas are related to a regions tidal range, wave energy, sediment supply, and backbarrier setting. |
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| I don't know the actual definition of this but I do remember him drawing little barriers off the coast of places that look like drumsticks, no joke. |
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| 2. How could filling a salt marsh influence the shape of an adjacent tidal inlet? |
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| Filling a salt marsh changes the elevation of the sea-level, which would flood an adjacent tidal inlet. |
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| 3. What conditions lead to large flood tidal deltas? To large ebb tidal deltas? |
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| For because the sand that is deposited is on the landward side of the inlet. related to a regions tidal range, wave energy, sediment supply and backbarrier setting. Mostly in areas with moderate to lardge tidal ranges, because these regions are well exposed at low tide. The parts of a flood tidal deltas are ... flood ramps, flood channels, ebb shield, ebb spits, spillover lobes. |
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| Suggest several ways tidal inlets might form? |
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| from recurved ridges of spits,strong currents at the throat |
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Can tidal deltas influence the shape of the adjacent beach?
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| yes, if they get large enough (and become a flood tidal delta) |
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| 6. How does longshore drift transport sand past tidal inlets? |
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long shore drift is when it pushes up on the sand and pulls it back (zig zag motion). sediment can skip over the inlet on the way down the beach.
Tidal flats and marshes: Terms to Understand |
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