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TeachMeFinance.com - explain Delta Delta The term 'Delta' as it applies to the area of reclamation can be defined as ' An alluvial sediment deposit normally formed where a river or stream enters a lake or estuary. Flat land mass of sediment deposit formed at the mouths of streams where they enter larger bodies of water. Sediment deltas are usually triangular in plan view, narrow at the upstream end and relatively wide at the downstream end. The sediment particles deposit because the river velocity and gradient are too low to keep the particles in motion. Active deltas contain diverging multiple channels that continually deposit sediment and migrate back and forth across the delta surface. The sediment particles of the delta deposit are usually well sorted such that the coarser particles (gravel and sand) deposit first at the upstream end, while finer particles (silt and clay) deposit farther downstream. A fan-shaped area at the mouth of a river'. The term 'Delta' as it applies to the area of coastlines can be defined as ' (1) an alluvial deposit, usually triangular, at the mouth of a river of other stream. it is normally built up only where there is no tidal or current action capable of removing the sediment as fast as it is deposited, and hence the delta builds forward from the coastline. (2) a tidal delta is a similar deposit at the mouth of a tidal inlet, put there by tidal currents. (3) a wave delta is a deposit made by large waves which run over the top of a spit or barrier beach and down the landward side'. The term 'Delta' as it applies to the area of the weather can be defined as ' In hydrologic terms, an alluvial deposit, often in the shape of the Greek letter 'delta', which is formed where a stream drops its debris load on entering a body of quieter water'. Previous 5 Terms: Delivery Delivery month Delivery point delphine delphinine Next 5 Terms: Delta T deltiology deltoid Demand Demand bid About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.