The term estuary is derived from the Latin words aestus (“the tide”) and aestuo (“boil”), An estuary produced by faulting or folding of rocks that creates a dropped-down section into which a river flows is called a _____. The San Francisco Bay is an example of a tectonic estuary. Coastal plain estuaries. Tectonic estuaries for on faults, where tectonic activity has created a space that can be filled in with water. Irregular coasts have numerous embayments, many of which are fed by streams. Coastal landforms - Coastal landforms - Barrier island/estuarine systems: Many depositional coasts display a complex of environments and landforms that typically occur together. salinity, substrate, turbidity, and temperature. They show little sedimentation, so that the ancient river valley still determines the estuarine topography. Such embayments are called estuaries, and they receive much sediment due to runoff from an adjacent coastal plain. Many coastal habitats are found in and around estuaries, including salt marshes, sandy beaches, mud and sand flats, rocky shores, oyster reefs, mangrove forests, tidal pools and seagrass beds. From north to south on Georgia's coast, they include Wassaw Sound, Ossabaw Sound, St. Catherines Sound, Sapelo Sound, Doboy Sound, Altamaha Sound, St. Simons Sound, St. Andrews Sound, and Cumberland Sound. Estuary Formation Most estuaries can be grouped into four geomorphic categories based on the physical processes responsible for their formation: (1) rising sea level; (2) movement of sand and sandbars; (3) glacial processes; and (4) tectonic processes. Fjords and rias. Coastal plain estuaries form from rising sea level, which fills an already existing river valley with water, creating an estuary. Differences from other estuaries: -Common throughout the world Estuaries are sheltered bodies of water where rivers meet the sea, nutrient-rich freshwater mixes with saltwater, and sunlight penetrates the shallow depths. Coastal lain estuaries are formed by the sea level rising and filling an existing river valley. (a) bar-built estuary (b) coastal plain estuary (c) fjord (d) salt wedge estuary (e) tectonic estuary In a general sense, the estuarine environment is defined by salinity boundaries rather than by geographic boundaries. what kind of term is "community" an ecological term. The major estuaries of Georgia generally connect with the Atlantic Ocean through large bodies of water called sounds, which lie between coastal barrier islands and separate them. Estuary, partly enclosed coastal body of water in which river water is mixed with seawater. NOAA's Estuary Education was developed to advance estuarine and coastal literacy by serving middle and high school educators through curriculum and professional development. drowned river valley, coastal plain estuary, bar built estuary, tectonic estuary, and fjords. A flock of birds in the water at the Elkhorn Slough Reserve in California. Estuaries are one of the most productive ecosystems in the world, so there is a great diversity of animals and plants that live there. what factors affect life in an estuary. resource partitoning. Examples of this are the Okura estuary, North Auckland. Coastal plain estuaries were formed by the flooding of river valleys following a rise in sea level over geological time. Estuaries- 6.09H Coastal Plain Estuaries This is also called "drowned river valleys" and are exactly what they sound like, the ocean level rises and flows over into a river valley and forms a coastal plain estuary. 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